Flashcards in TIA/Stroke Deck (11):
Patient with suspected TIA. Next step?
High resolution carotid ultrasound or MRA to evaluate for carotid artery stenosis
Transient monocular blindness caused by ischemia to the retinal artery. Described as shade being pulled down.
Onset of focal neurologic deficit with spontaneous resolution within 24 hours
Differential for TIAs?
Migraine, postictal paralysis, seizures, subdural hematoma, abscess, tumor
Types of focal neurologic symptoms?
1 amaurosis fugax
3 heavy anesthesia
Most common causes stroke/TIA and which part of the brain they affect?
1. Carotid atherosclerosis
2. Cardioembolism– MCA
3. Lipohyalinosis– lenticulostriate arteries
Cholesterol emboli that often lodge in with no artery causing amaurosis fugax
Pros and cons of noncontrast CT scan brain?
Pro: very sensitive at detecting acute cerebral hemorrhage
Con: insensitive to acute ischemic strokes, especially if stroke is small (<12 hours) or located in the brainstem
Stroke prevention - drugs?
Do not use this combination of drugs?
Plavix or combination of aspirin and dipyridamole > aspirin alone
Plavix + aspirin does not provide greater stroke prevention and increases bleeding
Long-term drug treatment for patients with AFIB? For patient with Lacunar infarcts?
Warfarin; blood pressure agents and antiplatelets