What is tPA used for?
Thrombolysis after acute ischaemic stroke - NICE says within 4.5hrs, national clinical guidelines for stroke of UK&I considers up to 9hrs
TIA mx
Aspirin 300mg daily started immediately (plus ppi if appropriate)
Specialist assessment and investigation within 24hrs
Secondary prevention as soon as diagnosis confirmed
True or false - in Bells Palsy there is forehead sparing.
False - in Bells Palsy, there is paralysis of the frontalis muscle which means they cannot raise eyebrows
What is Bells Phemonena
When attempting to close the affected eye, the eyeball on the affected side rotates upwards and outwards.
How quickly does Bells Palsy occur
Usually within 24hrs, sometimes few days
What happens to the corneal reflex in Bells Palsy
The sensory component of the corneal reflex is intact (trigeminal) but the motor component is lost (facial innervation of orbicularis oculi) so the reflex is absent on testing.
What is the prognosis of Bells Palsy
70% recover spontaneously, 30% ongoing complications such as ongoing weakness, synkinesis. Usually recovery within weeks but can take up to 6 months if severe.
Examination findings in Bells Palsy
LMN facial nerve.
Mouth sagging
Unable to close eye and Bells phenomenon
Loss of taste of anterior 2/3 tongue
Numbness of side of face
Hyperacusis
What is Ramsey hunt syndrome
Bells Palsy with ear rash (varicella zoster, treat with antivirals)
Management of bells Palsy
Oral steroids (within 72hrs onset) - increases chance of full recovery and reduce sequelae eg. 25mg BD for 10d or 60mg for 5d then reduce by 10mg per day for 5 days to stop.
Antivirals currently not recommended by NICE (unless Ramsey hunt syndrome)
Eye care important
How is parkinsons dementia different to alzheimers in presentation
PDD may affect multiple cognitive domains attention memory visuospelacial and exec function. Exec dysfunction tends to occur early and is more commonly found in PDD than Alz.
Psychiatric symptoms less common in PDD compared to in Lewy Body.
First line management parkinsons symptoms affecting QOL
Levodopa ( as cocareldopa, Co beneldopa)
What percentage of stroke risk following TIA is in first 48hrs
50%
How long does TIA last
Technically resolve within 24hrs
But usually less than 1hr and sometimes only minutes
Management of TIA
Aspirin 300mg daily to be started immediately
Seen in specialist clinic within 24hrs
This is because secondary prevention is so important to prevent a stroke
Symptoms of stroke
Focal cerebral or retinal symptoms lasting seconds minutes or usually less than 1hr
Motor weakness in 2 limbs or 1 limb and face
Sensory deficit in 2 limbs or 1 limb and face.
Homonymous hemianopia, or monocular blindness
Aphasia or dysarthria.
Possibly TIA - unsteady gait, diplopia, vertigo, dizziness
Very rare for TIA to cause LOC, amnesia, confusion, headache etc .
Those with atypical symptoms have bad outcomes because of delay of dx and mx.
How to screen for stroke/TIA
Face - weak or numb - ask patients to smile
Arms - weak or numb - ask patients to raise both arms
Speech - ask patient to repeat a sentence.
Time to call 999
In interim, exclude hypoglycaemia if you can! For any sudden onset neurological symptom.
Should you give aspirin if you suspect stroke
No . Don’t give aspirin until they have been scanned to ensure not haemorrhagic. Sometimes it is hard to know if TIA or stroke, so in practice, only give the aspirin if the neurological symptoms have completely resolved.
If stroke, immediate admission, ideally scan within 1 hr so more likely to get thrombolysis.
Primary care mx If TIA suspected (neurology completely resolved)
Aspirin 300mg immediately then daily
Refer to TIA clinic in 24hrs
Do not use ABCD2
As soon as diagnosis confirmed - secondary prevention - statin.
Secondary care will likely change to long term clopidogrel.
Primary Care mx if suspected stroke (still neuro present)
No aspirin until scan
Admit for immediate scanning within 1hr
Secondary care mx (thrombolysis or thrombectomy)
Thrombolysis
- haemorrhage excluded
- within 4.5hrs of symptom onset. NCGS go to 9hrs if evidence of salvageable tissue on imaging.
Thrombectomy (can be with thrombolysis if appropriate)
- ASAP and within 6hrs.
- if confirmed occlusion of proximal anterior circulation
6-24hrs post onset
- thrombectomy alone if proximal anterior circulation
- thrombectomy plus thrombolysis if occlusion of posterior circulation (don’t know why?)
Medical mx of strokes immediate
Antithrombotic/anticoag choice
If ischaemic stroke
- aspirin 300mg for 2 weeks
- then swap to longer term antithrombotic eg clopidogrel
Management of migraine
Sumitriptan can be used acutely
Prophylaxis topiramate, propranolol and amitriotyline.
Topiramate CI in pregnancy.
Prophylaxis of cluster headaches
Verapamil