And Answers Practice Questions with Solutions
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premature atrial contraction (PAC) - <<ANSWER>>rate: can occur at any rate
regularity: regular but interrupted by premature beats
P wave: shaped differ from sinus Ps, is premature and abnormal in size and shape
PR: .12 - .20 secs
QRS: <.12 secs
premature junctional contraction (PJC)
what three things could the P wave be? - <<ANSWER>>1. inverted + too close
2. missing
3. in the ST segment
Premature Junctional Contraction (PJC) - <<ANSWER>>
premature ventricular contraction (PVC) - <<ANSWER>>rate: can occur at any rate
regularity: regular but interrupted by premature beat
P waves: usually NOT seen
PR: not applicable - you don't measure it
QRS: wide and bizarre in shape; >.12 sec wide
T wave: OPPOSITE of QRS
, supraventricular tachycardia (SVT) - <<ANSWER>>Rate: 150 or higher
regularity: regular
P waves: NONE
PR: not measurable
QRS: < .12 secs
3rd degree AV block - <<ANSWER>>P + QRS - no consistent relationship
bundle branch block (BBB) - <<ANSWER>>Wide QRS ( .12 seconds )
idioventricular rhythm (IVR) - <<ANSWER>>rate: 30-40 bpm
NO P-R
accelerated IVR - <<ANSWER>>rate: 41 - 100 bpm
NO P waves
wide QRS
(V Tach) ventricular tachycardia - <<ANSWER>>rate: GREATER THAN 100 HR
regularity: USUALLY regular, but CAN BE a bit irregular
QRS: wide and bizarre; > 0.12 secs wide
T wave: opposite of QRS
Torsades de pointes - <<ANSWER>>rate: GREATER THAN 200 HR
regularity: regular or irregular
p waves: none
PR: not applicable - you don't measure it
QRS: wide and bizarre; > .12 secs wide