ACH Flashcards
What does NIHSS stand for?
National Institute of Health Stroke Scale
What is the NIHSS used for?
It is used to help a doctor determine the extent of neurological deficit in a patient with a suspected stroke.
How much do you have to score on the NIHSS to be susected of a very severe stroke?
> 25
How much do you have to score on the NIHSS to be suspected of a severe stroke?
15 - 24
How much do you have to score on the NIHSS to be considered to have a moderate stroke?
5 - 14
How much do you have to score on the NIHSS to be considered to have a mild stroke?
1 - 5
How many sections are there in the NIHSS?
11 (but some sections have subsections)
What does Dysarthria mean?
Slurred speech or difficult speaking (because of the muscles)
What percentage of strokes are made by an ischaemic stroke?
85%
What percentage of strokes are made by a haemorrhagic stroke?
10-15%
How many segments is the Middle Cerebral Artery split into?
4 segments (M1 - M4)
What is included in the Inclusion Checklist for Thrombolysis Treatment?
Symptoms of scute stroke
Onset within 4.5 hours
Measurable deficit on NIHSS
Absence of Haemorrhage on CT scan
What does tPA stand for ad what does it do?
Tissue Plasminogen Activator - this activates tissue plasminogen which converts it to plasmin. Plasmin goes on to break down Fibrin clots.
What is the only licensed synthetic tPA for Ischaemic stroke?
Alteplase
What is the risk associated with using Alteplase for thrombolytic treatment of ischaemic stroke?
6% risk of haemorrhage (2-3% of which are considered major/life-threatening)
What is the treatment for someone presenting with an ischaemic stroke, more than 4.5 hours after symptom onset?
Aspirin 300 mg stat dose.
Then Aspirin 300mg OD for 2 weeks, followed by clopidogrel 75mg OD life long
If Clopidogrel is contraindicated in stroke prophylaxis, which drug should be used instead?
Dipyridamole - this is a phosphodiesterase inhibitor
What does TACS stand for in stroke?
Total Anterior Circulation Stroke
What is the criteria for a TACS?
All (3) of the following symptoms:
- unilateral hemiparesis
- homonymous hemianopia/quadrananopia
- higher cortical dysfunction (dysphasia, visuospatial disorder)
What does PACS stand for?
Partial Anterior Circulation Stroke
What is the criteria for a PACS?
Two of the following symptoms:
- unilateral hemiparesis
- homonymous hemianopia/quadrananopia
- higher cortical dysfunction (dysphasia, visuospatial disorder)
What does LACS stand for?
LACunar Stroke
What is the criteria for a LACS?
One of the following symptoms:
- unilateral hemiparesis
- homonymous hemianopia/quadrananopia
- higher cortical dysfunction (dysphasia, visuospatial disorder)
What does POCS stand for?
Posterior Circulation Stroke