Junctional and Ventricular Arrhythmias Flashcards
Impulses originating in the AV node have to travel backwards, so there is a negative deflection of the P wave
Impulses that originate high in the junction, P wave comes ___
Impulses occurring in the middle of the AV are _____
Impulses originating low in the AV occur ____
before
hidden in the QRS complex
after the QRS
Premature Junctional Contraction
Rhythm: Underlying rhythm usually regular Irregular with PJC
Rate: Rate of underlying rhythm
P wave: P wave with PJC will be inverted
May be before, during, or after QRS
PR: < .10 seconds
QRS: < .10 seconds
How do you distinguish between a ST segment and a P wave?
There is a true beginning and end to P wave
Distinguishes between PACs and PJCs isn’t really necessary because….
the treatment is the same
_____ is the inherent backup pacemaker if the SA node fails
The AV junction
What does any kind of tachycardia (>100) look like and how do you treat it?
All SVT’s treated the same
Anxious
Confusion
organ failure
Impending doom
SLOW HR
-antiarrhythmias
Cardioversion if sever
Adenosine - chemical cardioversion - push as fast as possible
We look at _____ to see how well the junction in working
PR interval
Junctional Rhythm
Rhythm: Regular
Rate: 40 - 60
P wave: Inverted, may occur before,
during or after QRS
PR: < .10 seconds
QRS: < .10 seconds
Accelerated Junctional Rhythm
Rhythm: Regular
Rate: 60 - 100
P wave: Inverterd, May occur before,
during or after QRS
PR: < .10 seconds
QRS: < .10 seconds
Paroxysmal Junctional Tachycardia
Rhythm: Regular
Rate: > 100
P wave: Inverted, May occur before
during or after QRS
PR: < .10 seconds
QRS: < .10 seconds
Supraventricular Tachycardia(SVT)
Generic term meaning a rapid heart rate above the ventricle
Sinus Tachycardia
Atrial Tachycardia
Atrial flutter with a 2 to 1 conduction
Junctional tachycardia
