External resources MCQ 2 Flashcards
What is a type of hemorrhagic event outside of the brain that is still considered a stroke?
Subdural hematoma
Subarachnoid hemorrhage
Ischemic stroke
Blood vessel blocked by a clot
Epidural hematoma
Subarachnoid hemorrhage
What is the most common type of stroke?
Subarachnoid hemorrhage
Epidural hematoma
Ischemic stroke
Intraparenchymal bleed
Subdural hematoma
Ischemic stroke
What is the cause of a small vessel stroke that affects the thalamus?
Amyloid angiopathy
Hemorrhagic transformation
Lacunar infarct
Watershed stroke
Thromboembolic stroke
Lacunar infarct
What is the most common cause of a hemorrhagic stroke?
Amyloid angiopathy
Hyperlipidemia
Hypertension
Metastatic brain lesions
Diabetes
Hypertension
What is the overall most common type of stroke?
Hemorrhagic stroke due to a ruptured aneurysm
Subarachnoid hemorrhage
Lacunar stroke
Ischemic stroke
Embolic stroke
What is the overall most common type of stroke?
Hemorrhagic stroke due to a ruptured aneurysm
Subarachnoid hemorrhage
Lacunar stroke
Ischemic stroke
Embolic stroke
Ischemic stroke
What is the normal rate of cerebral blood flow?
Normal CBF is > 75 ml per 100 g brain tissue per minute.
Normal CBF is > 50 ml per 100 g brain tissue per minute.
Normal CBF is > 100 ml per 100 g brain tissue per minute.
Normal CBF is > 30 ml per 100 g brain tissue per minute.
Normal CBF is > 10 ml per 100 g brain tissue per minute.
Normal CBF is > 50 ml per 100 g brain tissue per minute.
What is described by the term “penumbral tissue?”
An area of normally perfused brain tissue
An area of the brain that has previously been affected by a stroke
An area of brain tissue that has not been affected by a recent stroke
An area of ischemic tissue surrounding the tissue affected by a stroke that is still potentially salvageable
An area of non-functioning brain tissue that has suffered infarction due to a stroke
An area of ischemic tissue surrounding the tissue affected by a stroke that is still potentially salvageable
What is a very serious complication due to brain edema and mass effect after a stroke?
Thalamic infarction
Brain herniation
Venous sinus thrombosis
Sodium/potassium channel dysfunction
Penumbral tissue transformation
Brain herniation
After acute occlusion of a cerebral blood vessel, what is the next step in the cascade of events?
Sodium/potassium channels in the cells become dysfunctional
Blood vessels become dysfunctional causing vasogenic edema and apoptosis
Water influx into brain cells causes edema
Brain swelling is seen on CT or MRI imaging
Infarction and necrosis of brain tissue result
Sodium/potassium channels in the cells become dysfunctional
What is the biggest risk factor for stroke?
Smoking
Heavy alcohol use
Obesity
Hypertension
Hyperlipidemia
Hypertension
Where do the posterior cerebral arteries originate?
The posterior cerebral arteries are branches of the middle cerebral arteries.
The posterior cerebral arteries are branches of the vertebral arteries.
The posterior cerebral arteries are branches of the carotid arteries.
The posterior cerebral arteries are branches of the basilar artery.
The posterior cerebral arteries are branches of the cerebellar arteries.
The posterior cerebral arteries are branches of the basilar artery.
What artery supplies the temporal and parietal lobes of the brain?
Vertebral arteries
Anterior cerebral artery
Basilar artery
Middle cerebral artery
Posterior cerebral artery
Middle cerebral artery
Where do the posterior inferior cerebellar arteries (PICA) originate?
Posterior cerebral arteries
Circle of Willis
Anterior inferior cerebellar arteries
Vertebral arteries
Basilar artery
Vertebral arteries
What part of the brain is supplied by the anterior circulation?
Occipital lobe
Thalamus
Cerebellum
Brainstem
Basal ganglia
Basal ganglia
