9.9.2013(syncope) Flashcards Preview

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Flashcards in 9.9.2013(syncope) Deck (22):
1

define syncope

transient,self limited loss of consciousness due to global cerebral ischemia

2

course of syncope

rapid onset
brief duration
spontaneous and complete recovery

3

presyncope

dizziness
lightheadedness
fatigue
auditory or visual disturbance

4

three broad etiological catagories of syncope

reflex or neurally mediated syncope
orthostatic syncope
cardiac syncope

5

most common type of syncope

reflex

6

Standing results in pooling of _________ ml of blood in lower limbs and splanchnic circulation

500-1000ml

7

type of headache in orthostatic hypotension

coat hanger headache

8

heart rates above which ventricular tachyarrythmias cause syncope

200

9

stoke adams attack

syncope due to asystole or bradycardia

10

cause of syncope in tachycardia bradycardia syndrome

prolonged pause following tachycardia

11

Indications for carotid sinus massage

recurrent syncope of unknown etiology in pts over 50 yrs

12

contraindications due to carotid sinus massage

bruit,plaque,stenosis

13

blood pressure during asystole

10-20mm Hg

14

Diff btw syncope due to ventricular tachycardia and stoke adams attack

LOC occurs later(20-120s) in ventricular tachycardias

15

first sign of an impending vasovagal faint

facial pallor

16

cerebral ischemic anoxia reserve time

7s

17

Most consistent ocular motor sign accompanying syncope

Upward turning of eyes which may be preceded by downbeat nystagmus

18

post ictal flushing after syncope indicates

sudden onset of syncope followed by rapid overshoot of pressure

19

Cause of persistence of pallor and oliguria after a vasovagal attack

vasopressin release

20

retrograde amnesia after vasovagal faint is common in

elderly

21

diff btw epileptic and psychogenic seizures

eyes are open during epileptic seizures

22

condition where syncope is caused by epilepsy

temporal lobe seizures causing arrythmias