Wolff-Parkinson-White Syndrome Flashcards
1
Q
WPW syndrome dx
A
symptomatic AVRT caused by accessory AV conduction pathway
2
Q
2 conduction pathways seen in WPW
A
anterograde vs retrograde
3
Q
ECG finding seen in anterograde WPW
A
delta waves (ventricular preexcitation)
4
Q
ECG finding seen in retrograde WPW
A
normal (“concealed”)
5
Q
how are the ventricles depolarized in retrograde WPW?
A
over the normal AV node-His-Purkinje network
6
Q
ECG findings of WPW
A
- short PR interval
- delta wave
- normal or prolonged QRS
7
Q
what is a risk factor for SUDDEN DEATH and why?
A
- AF a/w WPW syndrome
- degeneration into VF
8
Q
preferred tx for any UNSTABLE pt w/ WPW sydnrome
A
cardioversion
9
Q
first-line tx
A
catheter ablation of accessory bypass tract
10
Q
second-line tx
A
antiarrhythmic agents (procainamide)
11
Q
DON’T BE TRICKED
- next step in management for asymptomatic WPW conduction w/o arrhythmia
A
no further investigation or tx
12
Q
DON’T BE TRICKED
- which meds should NOT be given for pts who have AF w/ WPW syndrome and why?
A
- CCBs, BBs, digoxin
- tx may convert AF to VT or VF
