Neurological emergencies Flashcards
What do you need to check in a ABDEG examination?
Airways Breathing Circulation Deficit Environment - no hyper/hypothermia Glucose
Name 3 examples of neurological emergencies
Coma - sudden state of unconsciousness Sudden or subacute new headache Weakness - Generalised +/- resp failure - Acute/subacute paraplegia/quadriplegia - Acute hemi or monoplegia Visual loss Status epilepticus Other (acute loss of bladder function, hemiballismus, status dystonicus, severe chorea, severe dysphasia, acute dysphagia)
What does unconscious mean?
Unarousable
Not aware
How is coma measured?
GCS
What does GCS measure?
Response of eyes, motor, and verbal to stimuli
What is eye opening assessed as?
None
To pain
To voice
Spontaneously
What is motor response assessed as?
None Extension to pain Flexion to pain Withdrawal from painful stimuli Localises to pain Obeys commands
What is verbal response assessed as?
None Groans Inappropriate words Confused speech Orientated
What are the common causes of coma?
Drugs/toxins (opiates, alcohol) Anoxia post arrest Mass lesions (bleeds) Head injury Infections (HSE, bacterial meningitis) Infarcts (brainstem) Metabolic (hypoglycaemia, DKA, hepatic encephalopathy, uraemia, Wernicke's) SAH Epilepsy
What are the uncommon causes of coma?
Mass lesions (tumours) Venous sinus occlusions Hypothermia Psychiatric (catatonia) Toxins (CO)
What are the rare causes of coma?
Pituitary apoplexy
Fat embolism
What questions should you ask in the history of an unconscious patient?
Circumstances of event from witnesses
Previous events, suicide notes, travel Hx
PMH - general, psychiatric, head injury, alcohol
Drug - insulin, antiepileptics, antidepressants, benzos, recreational
What should you do in the examination of an unconscious patient?
Trauma, skull, fever, hypothermia, breath odour, needle marks, stigmata liver disease, evidence of convulsion, alert bracelet, skin colour
Assessment of GCS
Brainstem signs - pupil size, pupil reactions, eye movements, corneal reflexes
Focal deficits - asymmetry of motor function, tendon reflexes, plantars, meningism
What investigations should you do on an unconscious patient?
Bloods - glucose, U&E, Ca, phosphate, LFT, toxicology, alcohol level, arterial gases, anion gap, ECG Imaging - CT/MRI LP EEG Rarely cortisol, TFTs, ammonia
What is status epilepticus?
30 mins or more Continuous Intermittent attacks without recovery of consciousness Practically > 10 mins 5 mins generalised tonic-clonic 10 mins focal 10-15 absence