Neurology Flashcards
Epidural hematoma is caused by the rupture of: A) middle meningeal artery B) choroidal anterior artery C) middle cerebral artery D) superficial temporal artery
A) middle meningeal artery
EXPLANATION
The middle menigeal artery is the branch of external carotid artery and runs between the dura mater and the temporal bone. In case of bone fracture (temporal or parietal region), the middle meningeal artery could be ruptured and arterial hematoma develops quickly by compressing the ipsilateral hemisphere resulting in first contralateral hemiparesis thereafter somnolence, stupor, coma and finally herniation.
The importance of external carotid artery is:
A) important for the blood flow supply of posterior scala
B) important potential collateral source in case of ipsilateral ICA occlusion
C) participates in blood supply of brainstem
D) its occlusion results in amaurosis fugax
E) supplies the frontobasal part of the brain
B) important potential collateral source in case of ipsilateral ICA occlusion
EXPLANATION
The collateral circulation between the branches of external carotid artery (facial, angular arteries etc.) and ophthalmic artery (ICA branch) is important. In case of severe ICA stenosis or occlusion the good collateral circulation can sustain asymptomatic status. The reversed flow (extra-intracranial direction) in the ophthalmic artery can be detected by ultrasound.
The risk of stroke in hypertension: A) 2–8x B) 0,3–3x C) 2x D) 50x
A) 2–8x
EXPLANATIONThe hypertension increases the stroke risk by 2-8x
Symptoms of TIA, EXCEPT: A) Transient unilateral blindness B) Transient limb numbness C) Transient aphasia D) Transient loss of consciousness with epileptic seizure
D) Transient loss of consciousness with epileptic seizure
EXPLANATION
Transient focal deficits (unilateral blindness, aphasia, transient focal numbness, transient paresis) are typical symptoms of TIA. A transient loss of consciousness could be caused by quick blood pressure decrease, arhythmias (pump-function), blood glucose decrease or increase, and epilepsy but not by TIA.
Cerebral blood flow in the penumbra (region around the ischemic core) A) 0–10 ml/min/100 g brain tissue B) 10–20 ml/min/100 g brain tissue C) 55–60 ml/min/100 g brain tissue D) 100-120/min/100 g brain tissue
B) 10–20 ml/min/100 g brain tissue
EXPLANATION
The iv. thrombolysis or thrombectomy target the penumbra (10-20 ml/min/100g brain tissue, in healthy person 50ml/100g/min). The structures of the neurons are still preserved with impaired function.
Global cerebral ischemia causes irreversible cerebral damage after: A) 20–25 min B) 10–15 min C) 3–5 min D) 1–2 min
ANSWER
C) 3–5 min
EXPLANATION
Globalis cerebral ischemia causes irreversible cerebral damage after 3-5 minutes
Which mechanism plays an important role in the ischemic cascade? A) calcium influx B) potassium influx C) sodium influx D) decrease of monoamine level
A) calcium influx
EXPLANATION
During acute ischemia the calcium influx activates the ischemic cascade.
The carotid ultrasound is recommended in acute stroke, EXCEPT:
A) for the measurement of intima-media thickness.
B) to diagnose carotid occlusion/stenosis.
C) to determine the plaque characteristic: in case of ulcerated or inhomogenous plaque, endareterectomy could be suggested instead of stenting.
D) because it is the optimal method to detect carotid floating thrombus.
A) for the measurement of intima-media thickness.
EXPLANATION
The intima-media thickness is a marker of arteriosclerosis but not the part of acute stroke care.
Symptoms of vertebrobasilar insufficiency EXCEPT. A) diplopia B) vertigo C) dysarthria D) alternating brainstem syndromes E) apraxia
E) apraxia
EXPLANATION
A supratentorial lesion results in apraxia but not infratentorial one.
Typical symptoms of transient global amnesia, EXCEPT:
A) loss of anterograde memory B) the patient is alert C) shorter than 24 hours D) cortical blindness E) unknown cause
D) cortical blindness
EXPLANATION
Cortical blindness is caused by the bilateral occlusion of the posterior cerebral artery, which is not typical for transient global amnesia (TGA).
Cause of amaurosis fugax:
A) giant cell arteriitis
B) migraine with scotoma
C) thromboembolisation of the ophthalmic artery (terminal branch) from the ulcerated plaque of the ipsilateral internal carotid artery
C) thromboembolisation of the ophthalmic artery (terminal branch) from the ulcerated plaque of the ipsilateral internal carotid artery
EXPLANATION
The thromboembolisation of the ophthalmic artery may origin from the ulcerated plaque of the internal carotid artery, causing ipsilateral amaurosis fugax (transient monocular blindness). Contrarily occlusion of the calcarina artery causes contralateral heteronymous hemianopia, in case of migraine scotoma can develop. In case of giant cell arteriitis the lesion of the anterior part of the optic nerve or lesion of the central retinal artery is responsible for the deterioration of visual acuity.
Cortical lesion is probable in case of stroke in the territory of the internal carotid artery if:
A) hemiparesis with dominance in the facial and brachial area
B) if the severity of the paresis is similar on the upper and lower limb
C) visual field defect is also seen
D) permanent vertigo develops
A) hemiparesis with dominance in the facial and brachial area
EXPLANATION
If facial-brachial-dominant hemiparesis is seen in case of stroke affecting the territory of the internal carotid artery cortical lesion is probable, whilst the severity is similar in the face, upper limb and lower limb subcortical lesion (internal capsule) is more likely.
Which is NOT part of the symptoms of the unilateral occlusion of the anterior cerebral artery and its branches?
A) urinary and fecal incontinence
B) contralateral lower limb dominant hemiparesis
C) changes in behaviour and character
D) gnostic disturbance
D) gnostic disturbance
EXPLANATION
Gnostic dysfunction appear in lesions next to the primary sensory centers, supplied by the branches of the middle cerebral artery.
Which is NOT part of the symptoms in case of occlusion of the middle cerebral artery (M1)? A) contralateral severe hemiparesis B) homonymous hemianopia C) conjugate deviation of eyes D) hemihypaesthesia E) thalamus-syndrome, thalamus-hand
E) thalamus-syndrome, thalamus-hand
EXPLANATION
Thalamus-syndrome, thalamus-hand occur as a consequence of the occlusion of the branches of the thalamogeniculate artery (branches of the posterior cerebral artery), when the ventral posteromedial and posterolateral thalamic nuclei are damaged.
NOT part of Weber-syndrome: A) ipsilateral oculomotor nerve lesion B) contralateral hemiparesis C) contralateral increase deep tendon reflexes with pyramidal signs D) contralateral hyperkinesia
D) contralateral hyperkinesia
EXPLANATION
Weber-syndrome is an alternating motor brainstem syndrome: ipsilateral oculomotor nerve lesion, contralateral hemiparesis. When contralateral involuntary movements (hyperkinesis) occur not only the oculomotor nerve, but the red nucleus is damaged as well (Benedikt-syndrome).
Disturbance of gaze (vertical upwards), with vertical nystagmus is typical: A) Benedikt-syndrome B) Parinaud-syndrome C) Nothnagel-syndrome D) Raymond- (ventral pontine) syndrome
B) Parinaud-syndrome
EXPLANATION
The disturbance of gaze (vertical upwards) with vertical nystagmus is typical for Parinaud-syndrome. In the background tumor (especially pinealoma), sometimes vascular lesion and inflammation is found.
Cause of pseudobulbar palsy:
A) bilateral lesion of the corticobulbar fibers
B) lesion of the cranial nerves in the medulla oblongata
C) lesion of the dentate nucleus
D) lesion of the peripheral nerves responsible for articulation (speech) and swallowing
A) bilateral lesion of the corticobulbar fibers
EXPLANATIONBilateral lesion of the corticobulbar tracts causes pseudobulbar palsy.
Symptoms of occlusion of the superior cerebellar artery (lateral superior pontine syndrome), EXCEPT:
A) ipsilateral limb and truncal ataxia
B) dizziness, nystagmus
C) contralateral hypaesthesia, decreased vibration and joint position sensation
D) diplopia, deafness
D) diplopia, deafness
EXPLANATION
The following symptoms are detected in case of occlusion of the cerebellar superior artery (lateral superior pontine syndrome): Ipsilateral limb- and truncal ataxia, vertigo, horizontal nystagmus, contralateral hypaesthesia, vibration, joint position sensation The lesion may affect the superior and middle cerebellar peduncles, dentate nucleus, the vestibular nuclei of the cerebellum, the spinothalamic tract, dorsal part of medial lemniscus and the descending sympathic fibers.
What does Hunt and Hess Scale grade 4 stand for?
A) somnolence, confusion, mild neurological symptoms
B) deep coma, decerebration
C) stupor, moderate or severe hemiparesis, vegetative disturbance
D) severe headache, nuchal rigidity, cranial nerve palsy
ANSWER
C) stupor, moderate or severe hemiparesis, vegetative disturbance
EXPLANATION
By Hunt and Hess Scale grade 4 stupor, moderate or severe hemiparesis, vegetative disturbance are the symptoms. It grades the severity of subarachnoid hemorrhage.
Which artery’s aneurysm may cause unilateral oculomotor nerve palsy? A) posterior communicating artery B) anterior communicating artery C) ophthalmic artery D) posterior cerebral artery
A) posterior communicating artery
EXPLANATION
Unilateral total oculomotor nerve lesion can be caused by the aneurysm of the posterior communicating artery, because of its localization it may compress the oculomotor nerve.
What type of electrolyte abnormality may develop after subarachnoid haemorrhage? A) hypokalaemia B) hyponatraemia C) both of them D) none of them
B) hyponatraemia
EXPLANATION
Often hyponatraemia develops after subarachnoid haemorrhage (because of the disturbance of ADH-secretion).
Where the bleeding is localized in case of the following symptoms: eye-balls in the midline, bilateral miosis and pupils react poorly to light. A) thalamus B) pons C) cerebellum D) putamen
B) pons
EXPLANATION
In case of intracranial haemorrhage, if the bulbi are in central position, the pupils are point like (myosis), and show poor reaction to light, the bleeding is in the pons probably.
On cranial CT in the so called watershed area hypodens lesion is detected, with hyperdense petechia. This is typical for: A) bleeding B) chronic infarct C) fresh infarct D) haemorrhagic infarct E) cavernoma
D) haemorrhagic infarct
EXPLANATION
Haemorrhagic infarct is the diagnosis if on cranial CT in the so called watershed zone hypodensity is seen with smaller hyperdense territories inside.
The following symptoms are typical for the occlusion of the ………. artery: short after backpain (but not ictally) flaccid paraplegia with dissociated disturbance of sensation (deep sensation is preserved), urinary and bowel incontinence. A) posterior spinal artery B) sulcocommissural artery C) anterior spinal artery D) none of them
C) anterior spinal artery
EXPLANATION
The typical symptoms of occlusion of anterior spinal artery are: short (but not ictal) after pain in the thoracic/lumbar region flaccid paraplegia develops, with dissociated sensation disturbance (deep sensation is intact), incontinence (fecal and urinary). Prodromal symptoms (pain in the altitude of the lesion) may be reported before the severe symptoms. Pyramidal signs may be missing at the beginning. A space occupying procedure may compress the anterior spinal artery e.g. disc herniation.
On auscultation of the carotid arteries no bruit can be heard in case of: A) aortastenosis B) 70% stenosis of the carotid artery C) occlusion of the carotid artery D) inbleeded atherosclerotic plaque
C) occlusion of the carotid artery
EXPLANATION
Examining the supraaortic arteries by auscultation is mandatory screening method. A bruit draws attention to stenosis of the artery if it is not conducted from the heart or the aortic valve. Mild stenosis usually does not cause bruit, but the bruit may also cease when the stenosis is severe. subtotal or occluded. When the character of the bruit changes inbleeding plaque or dissection of the wall of a blood vessel may be in the background. All the above mentioned options need urgent examination (e.g. angiography).
By evaluating the severity of stenosis with duplex scan the measurement of velocity of the systolic and diastolic blood flow is necessary. When should one suspect more than 90% stenosis of the internal carotid artery?
A) if the systolic peak velocity is 110–120 cm/s
B) if the diastolic peak velocity is less than 40 cm/s
C) if the diastolic peak velocity is more than 100 cm/s
D) if the systolic velocity is less than110, diastolic less than 40 cm/s
C) if the diastolic peak velocity is more than 100 cm/s
EXPLANATION
By judging the exact size of the stenosis with duplex scan measuring the systolic and diastolic velocity of the flow is important. Above the systolic peak velocity is 110-120 cm/s, a diastolic peak velocity 40 cm/s stenosis is diagnosed. Above approximately 250 cm/s systolic and 100 cm/s diastolic velocity means a stenosis of more than 90%.
Alternating sensory /motor syndrome is typical of:
A) brainstem lesion
B) bilateral internal carotid artery occlusion
C) occlusion of the posterior cerebral artery
D) occlusion of the posterior choroidal artery
A) brainstem lesion
EXPLANATION
Appearance of alternating (crossed) sensory and/or motor symptoms show a localisation in the brainstem. The locus of the lesion is given by the cranial nerve’s symptom the contralateral „long tract” symptom is caused by the lesion of the tracts running in the base of the brainstem.
Lowering of elevated blood pressure in acute ischemic stroke is not recommended, except:
A) if the diastolic blood pressure exceeds 120 mmHg
B) if systolic blood pressure is 180 mmHg
C) if the symptoms improve dramatically
D) if the ultrasound test does not reveal significant internal carotid artery stenosis
A) if the diastolic blood pressure exceeds 120 mmHg
EXPLANATION
Lowering of elevated blood pressure is not recommended in acute ischemic stroke only if systolic blood pressure exceeds 190-200 mmHg and diastolic blood pressure exceeds 120 mmHg, because decreased cerebral perfusion pressure may cause adverse effects. However, after acute phase of ischemic stroke, hypertension must be treated. Often, high blood pressure decreases spontaneously in a few days.
From the onset of ischemic stroke symptoms, systemic thrombolysis can be indicated: A) within 6 hours B) within 12 hours C) within 24 hours D) within 4.5 hours
D) within 4.5 hours
EXPLANATION
From the development of ischemic stroke symptoms, thrombolysis may be indicated within 4.5 hours if the patient does not have any other exclusion criteria. If the symptoms are noted upon morning awakening, the onset time of stroke symptoms is uncertain. In this case, the last time point, when the patient was symptom-free, should be considered (e.g. bedtime, night awakening).
In acute ischemic stroke, based on various clinical studies, the following systemic thrombolytic agent has the best effect, with minimal bleeding complications:
A) urokinase
B) rt-PA (recombinant tissue - plasminogen activator)
C) streptokinase
D) ancrod
B) rt-PA (recombinant tissue - plasminogen activator)
EXPLANATION
In acute ischemic stroke, based on various clinical studies, systemic thrombolysis with rt-PA (recombinant tissue plasminogen activator) is the most effective method with the least bleeding complications.
Treatment of cerebral edema in ischemic stroke: A) high-dose steroid B) furosemid C) mannitol D) dextran
C) mannitol
EXPLANATION Mannitol infusion (20%, 200 mg/kg body weight in 10-15 minutes) can be used to treat cerebral edema caused by brain ischemia. In severe cases, Mannitol administration can be repeated every 4-6 hours. After stop of the dehydration, a rebound effect might develop. To avoid renal failure no greater dose than 100 g of mannitol per day sholud be used.
How can the functional status in patient with cerebrovascular disease be evaluated?
A) with Mathew Scale
B) with Barthel index
C) with Canadian Stroke Scale
D) with Orgogozo Scale
E) with combined use of Unified and Motor Score Scales
B) with Barthel index
EXPLANATIONThe change of the functional status in patient with cerebrovascular disease can be evaluated by the Barthel scale.
What are the non-modifiable risk factors for stroke? 1) stress 2) TIA 3) alcoholism 4) left ventricular hypertrophy A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
C) 2nd and 4th answers are correct
EXPLANATION
Non-modifiable risk factors for stroke include (but not limited to): TIA, left ventricular hypertrophy, previous myocardial infarction, peripheral vascular disease, age, gender.
The diaschisis could occur:
1) in the contralateral hemisphere
2) in the ipsilateral putamen, in case of frontal lesion
3) in the contralateral cerebellum
4) in the brainstem
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
B) 1st and 3rd answers are correct
EXPLANATIONIn hemispheric damage diaschisis (loss of function in regions of the brain being in connection with a distant, impaired brain area) may occur in the contralateral brain hemisphere and in the contralateral cerebellar hemisphere.
Consequence(s) of subarachnoid haemorrhage:
1) vasospasm, leading to secondary ischemic damage
2) diaschisis effect
3) nonresorptive hydrocephalus
4) chronic subdural bleeding
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
B) 1st and 3rd answers are correct
EXPLANATION
As a consequence of subarachnoid haemorrhage, vasospasm may develop in 15-45% of patients due to release of thromboxane, free radicals, serotonin etc. from the blood. Vasospasm usually appears 4-12 days after bleeding, and may lead to secondary ischemic damage. Other consequence of subarachnoid bleeding is inhibition of CSF circulation resulting in non-resorptive hydrocephalus.
Characteristics of Transient Ischemic Attack (TIA):
1) 10% of cerebrovascular diseases
2) in half the cases, the symptoms last for less than 30 minutes
3) in these patients the rate of myocardial infarction is high
4) with CT scan, lacunar infarction rate is above 50%
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
EXPLANATIONApproximately 10% of all cerebrovascular diseases is transient ischemic attack (TIA). Symptoms develop very rapidly, but rarely last longer than 1 hour, and in half the cases last less than 30 minutes. There is a high rate of myocardial infarction among patients with TIA. The incidence of annual stroke after TIA is 2-8%.
Possible causes of lacunar infarction:
1) polycythemia vera
2) Heubner arteritis
3) microatheroma
4) microembolisation
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
E) all of the answers are correct
EXPLANATION
Lacunar infarction is caused by occlusion of penetrating small arteries. The most common causes of lacunar infarction are polycythemia vera (disturbance of microcirculation), Heubner arteritis, microatheroma, microembolisation, lipohyalinosis and fibrinoid necrosis of the vessel wall.
Symptoms caused by occlusion of the inferior branches of middle cerebral artery:
1) contralateral hemianopsia, rarely quadrant anopsia
2) Wernicke- (sensory) aphasia in case of lesion in the dominant hemisphere
3) contralateral transient or mild faciobrachial paresis
4) motor (Broca-) aphasia in case of lesion in the dominant hemisphere
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
EXPLANATION
The inferior branches of the middle cerebral artery (MCA) supply the inferior part of the parietal lobe and the superior gyrus of the temporal lobe. Symptoms resulted from occlusion of the inferior branches of MCA can be understood from the functions of the damaged anatomical structures: contralateral hemianopsia or rarely quadrant-anopsia, Wernicke (sensory) aphasia, conductive aphasia, ideomotor apraxia, rarely Gerstmann syndrome in case of lesion in the dominant hemisphere. Contralateral motor symptoms are mild (transient or mild faciobrachial paresis). In case of damage in the non-dominant hemisphere, mild contralateral faciobrachial paresis may be associated with anosognosia, prosopagnosia, dressing and constructive apraxia.
Characteristic clinical features of the medial medullary lesion (Jackson-syndrome):
1) ipsilateral peripheral hypoglossal lesion
2) contralateral hemiparesis
3) the syndrome is caused by occlusion of the anterior spinal artery and paramedian arteries
4) contralateral tactile and proprioceptive hypesthesia
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
E) all of the answers are correct
EXPLANATION
Jackson’s (medial medulla oblongata) syndrome is caused by occlusion of the anterior spinal artery and the paramedian arteries. The symptoms can be understood from the function of the damaged area: ipsilateral peripheral hypoglossal lesion, contralateral hemiparesis (sparing the face). Tactile and proprioceptive hypesthesia may also develop on the contralateral side of the body.
Clinical features of the lateral medullary lesion (Wallenberg syndrome):
1) dysphagia, dysarthria
2) vertigo, nystagmus
3) algetic- and thermo-hypesthesia on the ipsilateral face and contralateral body
4) Horner’s triad on the ipsilateral side of the lesion
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
E) all of the answers are correct
EXPLANATION Wallenberg (lateral oblongata) syndrome is caused by occlusion of the posterior inferior cerebellar artery. Symptoms include vertigo, nystagmus, gait ataxia, diplopia, dysphagia, dysarthria, ipsilateral Horner triad, and algetic and thermohypesthesia on the ipsilateral face and on the contralateral body side.
Clinical features of the thalamic lesion:
1) hemihypaesthesia with hemihyperkinesia
2) the basic joints are in flexion position, the interphalangeal joints are in extension postion
3) hyperpathy -burning, shooting pain that is difficult to localise, occurs in attacks and can hardly be influenced by medicines
4) Millard–Gubler syndrome
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
EXPLANATION
Since thalamus is related both anatomically and operationally to the hemispherial cortex, and all the afferent systems switch over in the thalamus, thalamic lesion may have several consequences. The ventrolateral nucleus is closely related to the cerebellum, therefore its damage causes hemihypesthesia with hemihyperkinesis (choreoathetosis-like involuntary movements). The so-called “thalamic hand” is also a typical symptom in case of thalamus injury: the basic joints are in flexion while the interphalangeal joints are in extension. Damage of the sensory nuclei often causes “central” or thalamic pain, which can hardly be influenced by medicines. Thalamic pain is characterised by burning, shooting pain that is difficult to localise and occurs in attacks. Thalamus plays a role in the regulation of consciousness as well. Furthermore, thalamus lesion may provoke focal epileptic seizure, and may also cause dementia.
The following symptoms are always characteristic for central type of lesion:
1) increased abdominal reflexes
2) increased deep reflexes with pyramidal signs
3) anarthria
4) spastic muscle tone
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
C) 2nd and 4th answers are correct
EXPLANATION
Increased deep-reflexes with pyramidal signs and spastic muscle tone always refer to a central type of lesion.
Which symptom is not characteristic for the Gerstmann syndrome?
1) left-right confusion
2) finger agnosia
3) acalculia
4) alexia
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
D) only 4th answer is correct
EXPLANATIONGerstmann’s syndrome is characterized by left-to-right confusion, finger agnosia, agraphia and acalculia.
Arteriovenous malformation is suspected in case of the following symptoms and complaints:
1) epileptic seizures
2) supraorbital or occipital bruits
3) headache
4) subarachnoideal hemorrhage
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
E) all of the answers are correct
EXPLANATION
If headache and focal or secondarily generalized seizures develop and bruit can be heard in the supraorbital or occipital region, arteriovenous malformation is suspected. In that case the source of the subarachnoidal hemorrhage is probably the vascular malformation.
Signs of cerebral ischemia with cranial CT scan:
1) fogging phenomenon
2) hypodensity
3) gyral contrast enhancement
4) usually there is no abnormality in the first hours of the ischemic event
A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
E) all of the answers are correct
EXPLANATION
In cerebral ischemia usually there is no abnormality on cranial CT scan in the first hours of the ischemic event. After 6-8 hours hyperacute ischemic signs could be seen. After 1-2 days clear hypodensity develops in the infracted territory. The hypodensity is mild and has blurred margin in the beginning, however, later it becomes demarcated. Contrast enhancement occurs in the subacute stage, and usually begins at the end of the first week of stroke. Contrast enhancement reaches its maximum at week 2 and 3, and fades over the following weeks. Contrast enhancement usually shows a gyriform pattern on the surface of the brain, but may also occur in the deep parenchyma. It is likely due to a combination of blood brain barrier breakdown, neovascularisation and impaired autoregulation. This phenomenon was previously referred to as ‘luxury perfusion’. Two-three weeks after ischemic stroke, the cortex may show near-normal density (isodense) on native CT, it is the so-called fogging phenomenon. Fogging phenomenon is explained by macrophage invasion, proliferation of capillaries, and sometimes extravasation of blood cells through damaged vessel walls. If in doubt, the administration of IV contrast will demarcate the region of infarction at this stage. Later (week 5-6) the residual swelling passes, and gliosis develops resulting in a region of low density with negative mass effect.
Indication of cerebral angiography:
1) in urgent cases, when angiography helps in clinical decisions and treatments (e.g. subarachnoideal hemorrhage, local thrombolysis in acute large vessel occlusion)
2) in cerebral contusion to localize the source of the bleeding
3) to plan intra-arterial intervention like intraluminal angioplasty
4) to localise sub- and epidural hematoma
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
B) 1st and 3rd answers are correct
EXPLANATION
1. and 3. statements are true. Sub- and epidural hematomas are diagnosed with noncontrast cranial CT and there is neither indication for angiography in cerebral contusion.
Which are the major psychological factors that hinder the effective rehabilitation after stroke? 1) emotional lability 2) anxiety, anger 3) avoiding, aggressive behavior 4) mania A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
EXPLANATION
The most important psychological characteristics that hinder the early rehabilitation after stroke are emotional lability, dysthimia, anxiety, anger and aggressive behavior. Euphoria is rare.
Potential consequence(s) of cerebrovascular diseases that hinder successful rehabilitation: 1) depression 2) schizophreniform reaction 3) dementia 4) none of them A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
B) 1st and 3rd answers are correct
EXPLANATION
Post-stroke depression is relatively common after cerebrovascular diseases (20-50% of the cases). Treating post-stroke depression improves the outcome of rehabilitation. Cognitive decline often appears in cerebrovascular diseases. In vascular dementia, which may also hinder the rehabilitation, the memory and the abstraction are mostly affected
Transcranial Doppler ultrasound (TCD) examination has to be ordered:
1) to monitor vasospasm after subarachnoid bleeding
2) for emboli detection, if cardiogen stroke is suspected
3) to determine the cerebrovascular reserve capacity with acetazolamide test before carotid endarterectomy
4) in case of vacular lesion in the territory of the middle cerebral artery
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
E) all of the answers are correct
EXPLANATION
The indications of transcranial Doppler ultrasound (TCD) examination: to monitor vasospasm after subarachnoidal bleeding to examine the flow parameters in intracranial arteries in case of ischemic stroke to detect microemboli, if cardiogenic stroke or unstable carotid plaque is suspected to determine the cerebrovascular reserve capacity with use of acetazolamide test or breath-holding test before carotid surgery
Which plaque type(s) is (are) considered as source of embolisation on B-mode ultrasound image? 1) exulcerated 2) haemorrhagic 3) heterogeneous 4) homogeneous A) 1st, 2nd and 3rd answers are correct B) 1st and 3rd answers are correct C) 2nd and 4th answers are correct D) only 4th answer is correct E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
EXPLANATION
Regarding the B mode ultrasound imaging, exulcerated, hemorrhagic and heterogeneous plaques are considered as source of embolisation.
Which of the following examination(s) is (are) needed if cardiogenic stroke is suspected:
1) detailed haematologic examination
2) transthoracic echocardiography (TTE)
3) blood pressure monitoring for 24 hours
4) transesophageal echocardiography (TEE), if TTE couldn’t detect the source of embolisation and if the origin of stroke was unknown in young patient
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
C) 2nd and 4th answers are correct
EXPLANATION
In case of suspicion of cardiogenic stroke, detailed cardiologic examination is needed, including transthoracic echocardiography (TTE) and transesophageal echocardiography (TEE) if TTE couldn’t identify the source of embolisation and if the origin of stroke was unknown in young patients. Although blood pressure monitoring does not help, Holter ECG is highly recommended if cardiogenic stroke is suspected.
Match the symptoms with the site of the lesion
A) ideomotor apraxia
B) amusia
C) dysarthria
D) Gerstmann’s syndrome
E) Horner’s syndrome
NEU - 1.124 - caused by a lesion of the pole of the superior temporal gyrus
NEU - 1.125 - caused by bilateral damage of the corticobulbar fibers
NEU - 1.126 - caused by a lesion of the lateral part of the medulla, part of the Wallenberg’s syndrome
NEU - 1.127 - caused by damage of the left supramarginal gyrus in right-handed patients
NEU - 1.128 - caused by a lesion of the left angular gyrus
NEU - 1.124 - caused by a lesion of the pole of the superior temporal gyrus - B)
NEU - 1.125 - caused by bilateral damage of the corticobulbar fibers - C)
NEU - 1.126 - caused by a lesion of the lateral part of the medulla, part of the Wallenberg’s syndrome - E)
NEU - 1.127 - caused by damage of the left supramarginal gyrus in right-handed patients - A)
NEU - 1.128 - caused by a lesion of the left angular gyrus-D)
Match the statements.
A) Speech disturbance and mild right sided hemiparesis developed and resolved within 3 minutes. On cranial CT, lacunar infarctions are seen on the right side.
B) Agraphia with alexia, acalculia, finger agnosia, lower quadrant anopsia evolved, and the symptoms resolved within 2 days.
C) Moderate hemiparesis developed in several hours in the patient admitted with mild left sided hemiparesis, next day hemiplegia evolved and the patient became somnolent and incontinent.
D) Right sided homonymous hemianopsia was detected at the beginning, and pronounced limb ataxia, latent hemiparesis was still present 4 weeks later.
E) Occasionally, the patient complained of severe headache and nausea, which relieved and reoccured, on fundoscopy spontaneous venous pulsation was missing, on the right side brisk deep tendon reflexes were found.NEU - 1.129 - the clinical course may refer to completed stroke
NEU - 1.130 - transient ischemic attack (TIA)
NEU - 1.131 - the clinical course raises suspicion for cerebral tumor rather than stroke
NEU - 1.132 - the symptoms may refer to stroke in the dominant parietal lobe
NEU - 1.133 - the clinical course and syndrome are specific for progressing stroke
NEU - 1.129 - the clinical course may refer to completed stroke - D)
NEU - 1.130 - transient ischemic attack (TIA) - A)
NEU - 1.131 - the clinical course raises suspicion for cerebral tumor rather than stroke - E)
NEU - 1.132 - the symptoms may refer to stroke in the dominant parietal lobe - B)
NEU - 1.133 - the clinical course and syndrome are specific for progressing stroke -C)
Occipital lobe damage causes homonymous hemianopsia, because this symptom is present only in case of occipital lobe injury.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
C) the statement is true, but the explanation is false;
EXPLANATION
After occipital lobe damage homonymous hemianopsia is found, but this sypmtom can also be present in case of optic tract or temporal+parietal lobe (optic radiation) damage.
The occlusion of the external carotid artery usually does not cause neurological symptoms, because it has no collateral connection with the internal carotid artery.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
C) the statement is true, but the explanation is false;
EXPLANATION
The occlusion of the external carotid artery usually does not cause neurological symptoms. However, there is a collateral connection between the external and the internal carotid arteries.
In case of a sudden, twinge pain in the frontal and nuchal area during strain, rupture of an intracerebral aneurism should be suspected, because subarachnoidal bleeding could cause cardiac arrythmia.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
B) both the statement and the explanation are true but there is no causal relationship between them;
EXPLANATION
In case of a sudden, twinge pain in the frontal and nuchal areas during strain, intracerebral aneurysm rupture should be suspected. In addition to numerous early and later complications, subarachnoidal bleeding can cause cardiac arrythmia too. Both statements are true, however, there is no connection between them.
In case of post-stroke depression antidepressant drugs should be used, because depression can inhibit rehabilitation.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
ANSWERA) both the statement and the explanation are true and a causal relationship exists between them;
EXPLANATION
In case of post-stroke depression antidepressant drugs should be used, because depression can inhibit the rehabilitation
In case of endocarditis lenta anticoagulation therapy is needed, because cerebral embolisation can develop.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
D) the statement is false, but the explanation itself is true
EXPLANATION
In case of endocarditis lenta cerebral embolisation can develop, but anticoagulation therapy is prohibited, because it can increase the chance of cerebral embolisation.
ECG monitoring in acute phase of stroke is necessary, because stroke may cause cardiac arrythmia.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
A) both the statement and the explanation are true and a causal relationship exists between them;
EXPLANATION
ECG monitoring in the acute phase of stroke is necessary, becasue stroke can cause arrhythmia.
In case of intracranial arterial occlusion, the lactic acid level raises, NADH/NAD ratio decreases, because superoxide radicals play important role in damaging the mitochondrial membrane.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
B) both the statement and the explanation are true but there is no causal relationship between them;
The most likely diagnosis is:
After waking up at 6 a.m., a 74-year-old male patient’s wife noticed that her husband couldn’t speak and was unable to move his right extremities. She saw him last at 2 a.m. when her husband went to the toilet and was symptom-free. She called the family doctor, who measured 180/110 mmHg blood pressure and 88/min heart rate. They called the ambulance and arrived at the hospital by 8 a.m. Status: pulmonary emphysema, fundoscopy showed hypertensive retinopathy, right sided central facial palsy, right sided hypotonic, severe hemiparesis predominantly in upper extremities, increased deep tendon reflexes, complete motoric, severe sensoric aphasia. ECG: atrial fibrillation. Electrolytes and blood sugar levels were within the normal ranges.
A) arteriosclerotic encephalopathy
B) ischemic lesion in the territory of the left middle cerebral artery
C) hypertensive encephalopathy
D) Biswanger’s disease
B) ischemic lesion in the territory of the left middle cerebral artery
EXPLANATION
Considering the symptoms, the onset of symptoms, and atrial fibrillation in the history, the most likely diagnosis is ishemic lesion in the territirry of the left middle cerebral artery. To verify the diagnosis, the following investigations are needed: cranial CT, duplex scan ultrasound, cardiologic examination with echocardiography. The onset of symptoms is determined by the last time when the patient was symptom-free, in this case 2 a.m. Since atrial fibrillation is known, the heart is the most likely to be the source of embolization, therefore the most probable etiology is cardioembolic.
Which neurological disease could it be?A 24 years old, primipara woman had strong headache and fever 3 days after delivery. Although the fever was relieved by antipyretic drugs, she became somnolent and developed left sided focal motoric seizure with secondary generalisation. A few hours later the seizures repeated. dministration of 1 mg intravenous clonazepam stopped the seizures. Neurologist found left sided hemiparesis, increased deep tendon reflexes and disturbance of consciousness (somnolence). Prominent scalp edema was also noticed.
A) subarachnoidal bleeding due to aneurysm rupture
B) cerebral embolisation
C) cerebral sinus (venous) thrombosis
D) cerebral hypoxia associated with pneumonia
E) postpartum deep vein thrombosis with cerebral embolization
C) cerebral sinus (venous) thrombosis
EXPLANATION
Considering the patient’s hystory, the symptoms, and the progress of the disease, cerebral sinus (venous) thrombosis is suspected. (Based on scalp edema and the other symptoms, superior sagittal sinus thrombosis seems to be the most probable diagnosis.) To verify the diagnosis, cranial CT or MRI with venous CT-angiography or MR-angiography is necessary. (More precise diagnosis can be established by DSA). Searching for the source of infection is also necessary (in this case gynaecological source is the most likely). Treatment: wide spectrum antibiotics, mannitol, therapeutic dose of heparin (even if there is a haemorrhagic transformation).
Which investigations should be done in order to verify the diagnosis?A 24 years old, primipara woman had strong headache and fever 3 days after delivery. Although the fever was relieved by antipyretic drugs, she became somnolent and developed left sided focal motoric seizure with secondary generalisation. A few hours later the seizures repeated. dministration of 1 mg intravenous clonazepam stopped the seizures. Neurologist found left sided hemiparesis, increased deep tendon reflexes and disturbance of consciousness (somnolence). Prominent scalp edema was also noticed.
1) cranial CT or MRI with venous CTA, or MRA
2) duplex ultrasound examination of cervical arteries
3) search for source of infection (in this case gynecologic source is likely)
4) lumbar puncture, CSF can be bloody
A) number 1, 2 and 3 answers are correct B) number 1 and 3 answers are correct C) number 2 and 4 answers are correct D) only the number 4 answer is correct E) all answers are correct
ANSWERB) number 1 and 3 answers are correct
What is the most likely diagnosis?
A 42 years old man lifted a heavy timber made of concrete when he suddenly developed a severe, intolerable headache at the occipital and forehead regions. Hypertension was known in his medical history which was treated by oral medications. He lied down, but his symptoms became worse, furthermore, nausea and photophobia also developed. He became somnolent during transport to neurology ward. Moving the head aggarvated his headache. The neurologist found neck stiffness, increased deep tendon reflexes on both sides. There was no paresis. Blood pressure: 180/100 Hgmm, heart rate: 98/bpm.
A) intracerebral bleeding
B) arteriovenous malformation
C) haemorrhagic infarct
D) subarachnoidal haemorrhage caused by rupture of intracranial aneurysm
D) subarachnoidal haemorrhage caused by rupture of intracranial aneurysm
EXPLANATION
Based on the patient’s history and neurological signs, the most likely diagnosis is intracranial aneurysm rupture resulting in subarachnoidal bleeding. In order to verify the diagnosis, cranial CT and cranial CT-angiography or DSA are necessary. CT scan may reveal subarachnoidal bleeding, sometimes the source of bleeding can also be seen. Cranial CT-angiography, or DSA shows the localisation, size and morphology of the aneurysm. Multiple aneurysms may be found, in that case CT (localisation of subarachnoidal bleeding) might help localise the ruptured aneurysm. Vasospasm is a complication of subarachnoidal bleeding, which may cause cerebral ischemia.
What can be the diagnosis?
A 64 years old, heavy drinker man suddenly collapsed on the street. He lost his consciousness and his face became red. His friend mentioned that the patient had hypertension, however, he did not take any medication. The ambulance team measured 240/120 mmHg blood pressure. Endotracheal intubation was performed because the patient vomited and his respiration was not stable. He had neck stiffness and pain stimulus induced tetraextension in the extremities. His left pupil was dilated and the light reacion on the left side was almost absent. The blood sugar was 14 mmol/L and ECG showed bradycardia.
A) right hemispheric intracerebral bleeding
B) pons haemorrhage
C) cerebellar haemorrhage
D) left hemispheric intracerebral bleeding with mass effect
E) none of them
D) left hemispheric intracerebral bleeding with mass effect
EXPLANATION
Based on the symptoms and the positive medical history for untreated hypertension, the most likely diagnosis is left sided intracerebral bleeding with mass effect. Urgent cranial CT is needed. The dilated, and barely reacting pupil on the left side indicates the side of the bleeding (due to the mass effect causing transtentrial herniation the ipsilateral oculomotor nerve is compressed). Tetra-extension to pain stimulus refers to bad prognosis.
Characteristic features of migraine, except:
A) pulsating pain
B) mostly unilateral
C) physical activity increases the intensity
D) dizziness
E) duration is 4–72 hours
D) dizzinessEXPLANATIONThe dissiness is not among the criteria of migraine (not a characteristic feature of migraine) according to the International Headache Society
What is the prevalence of migraine in adults? A) 1–2% B) 5–7% C) 8–12% D) more, than 20%
C) 8–12%
The onset of primary headaches may be, except: A) childhood B) young age (2–3. decades) C) 4th decade D) above 60. years
D) above 60. yearsEXPLANATIONHeadache that occurs in the 5th decade or later refers to symptomatic geadache
Accompanying signs of cluster headache, except:
A) miosis
B) ptosis
C) conjunctival injection
D) paraesthesia on the contralateral side of the headache
E) bradycardia
D) paraesthesia on the contralateral side of the headache
EXPLANATIONHemiparaesthesia doesn’t occure in cluster headache
What is the characteristic nerve conduction velocity of unmyelinitaed pain-transmitting C fibers? A) 70–120 m/s B) 70–100 m/s C) 15–40 m/s D) 0.2–2 m/s
×ANSWERD) 0.2–2 m/s
Abdominal lancinating pain is a characteristic sign of: A) spinal cord disease B) tabes dorsalis C) trigeminal-neuralgia D) multiple mononeuritis
B) tabes dorsalis
EXPLANATIONLancinating pain is a symptom of lues when granulomatous inflammation infiltrate posterior roots of thoracic spine and ganglion coeliacum and cause pain with sharp quality and very short duration
What can not be the cause of trigeminal neuralgia? A) idiopathic origin B) multiple sclerosis C) somatoform disturbance D) cancer
ANSWERC) somatoform disturbance
EXPLANATIONTrigeminal neuralgia is well localized, is very sharp and is a triggered pain with a duration of a couple of seconds. It can be idiopahic or symptomatic.
Which one is effective in prophylaxis of cluster headache?A) beta blockers
B) minor analgesics
C) calcium channel blockers
D) tricyclic antidepressants
C) calcium channel blockers
EXPLANATION
Verapamil, a calcium channel blocker was proved to be effective for cluster headache prophylaxis.
It can be effective in the treatment of tension type headache: A) antihistamines B) antihypertensives C) tricyclic antidepressants D) MAO-inhibitors
C) tricyclic antidepressants
EXPLANATION
Low dose prolonged use of tricyclic antidepressants is proved for the preventive treatment of tension type headache.
Which symptom can be caused by unruptured intracranial aneurysm? A) signs of oculomotor nerve lesion B) visual field defect C) ipsilateral recurring headache D) ipsilapteral facial pain E) all of them
E) all of them
EXPLANATIONAll of the mentioned complains and symptoms may occur.
Typical in Wallenberg syndrome: A) contralateral pain B) ipsilateral hypalgesia C) contralateral hemihypalgesia D) ipsilateral facial hypalgesia and contralateral hypalgesia below C2
D) ipsilateral facial hypalgesia and contralateral hypalgesia below C2
EXPLANATION
Wallenberg sy is caused by lesion of the dorsolateral medulla oblongata (territory of the posterior inferior cerebellar artery). The decussated spinothalamic and not yet decussated descending trigeminal tract is located at this region, lesion of them results in crossed (alternating) sensory loss (below C2 on the contralateral side of the body and ipsilaterally on the face: algetic, tactile and thermal hypaesthesia).
Symmetric burning, stabbing pain at the distal part of the extremities, especially on the legs typical for: A) polyneuropathy B) radiculitis C) myositis D) Lambert–Eaton syndrome
A) polyneuropathy
EXPLANATIONType and localization of the pain suggests polyneuropathy.
Typical in migraine, except for:
A) unilateral in more than half of the cases
B) frequently vegetative symptoms
C) EEG always negative
D) ocular symptom in ophtalmoplegic migraine may last for several days
E) frequently aspirin is effective
C) EEG always negative
EXPLANATIONA
specific EEG alterations may be observed in migraine patients.
Shooting pain, dysuria, ataxia associated with pupil disorder, areflexia, and proprioceptiv sensory disturbance suggest the following disease: A) Mixed connective tissue disease B) Tabes dorsalis C) Multiple sclerosis D) Syringomyelia
B) Tabes dorsalis
EXPLANATIONThe symptoms described are typical for tabes dorsalis.
Trigeminal-neuralgia is the least common in the following division of the trigeminal nerve: A) V/2 B) V/3 C) V/1 D) V/2 + V/3
C) V/1
EXPLANATION
V/1 localisation is the rarest form in primary (idiopathic) trigeminal neuralgia.
What is the order of the appearance of herpes zoster symptoms: A) pain-vesicles-pigmentation B) vesicles–pigmentation–pain C) pain–pigmentation–vesicles D) pigmentation– vesicles–pain E) vesicles–pain–pigmentation
A) pain-vesicles-pigmentation
EXPLANATION
Radicular pain may precede the diagnostic skin lesions (vesicles) by days.
Childhood head injury is frequently associated with the following symptom(s): A) vertigo B) epileptic seizure C) headache D) all of them E) none of them
D) all of them
EXPLANATION
According to clinical observations childhood head injury is frequently associated with vertigo, epileptic seizure and headache.