ECG 8 - Arrhythmias 2 Flashcards
1
Q
Tachys
-finding ? waves is most important - can use this to decide the ? of the tachy
A
P
origin
2
Q
SVT
- in ? tachy, the atria depol ? than 150/min - p waves are often ? on the previous T waves
- the ? can only conduct atrial discharge rates up to ?/min, so above this, AV ? occurs -> some p waves are not followed by ? ? -> atrial tachy/flutter are often ass w ? block
- dif between this and ? ? heart block is that the AVN is functioning ? here, just preventing ? of the ventricles
A
atrial quicker superimposed AVN 200 block qrs complexes 2:1 2 deg normally over activation
3
Q
SVT mx
- ?-? resus - assess for adverse features - > if any -> ? DC ?
- if irregular rhythm, or atrial ?, treat as ?
- if regular - first attempt ? manoeuvers -> ? sinus ?, ? manoeuver, ? them down -> lead to ? stimulation of SAN/AVN, causing ? SAN discharge and increased AVN ?
A
A-E synchronised cardioversion flutter AF vagal carotid massage valsalva cool vagal decr delay
4
Q
SVT Mx
- if vagal manoeuver unsuccessful -> IV ? - ? mg initially, ? mg if no effect , then another ? mg bolus - CI in ? - use verapamil
- no success? -> electrical ?
- 2* prevention then indicated with use of ?
A
adenosine 6 12 12 asthma cardioversion BB
