NURS 4581. Dysrhythmias Questions and Answers

NURS 4581. Dysrhythmias

Sinus rhythm - answer-rate: 60-100 bpm
-rhythm: regular
-P wave: upright, rounded, consistent in shape and seems paired with a QRS complex
-PR interval: 0.12-0.20 secs
-QRS: 0.06-0.10 secs

sinus arrhythmia/irregular sinus rhythm (ISR) - answer-rate: 60-100 bpm
-rhythm: irregular
-P wave: upright, rounded, consistent in shape and seems paired with a QRS complex
-PR interval: 0.12-0.20 secs
-QRS: 0.06-0.10

sinus bradycardia - answer-rate: 59 bpm or less
-rhythm: regular
-P wave: upright, rounded, consistent in shape and seems paired with a QRS complex
-PR interval: 0.12-0.20 secs
-QRS: 0.06-0.10 secs

sinus tachycardia - answer-rate: 101+ bpm
-rhythm: regular
-P wave: upright, rounded, consistent in shape and seems paired with a QRS complex.
P waves may not be easily visible at rates greater than 150 bpm
-PR interval: 0.12-0.20 secs
-QRS: 0.06-0.10 secs

supraventricular tachycardia/paroxysmal supraventricular tachycardia - answer-rate:
100-300 bpm
-rhythm: regular
-P wave: abnormal shape. Unable to see P waves of any shape when HRs are greater
than 150.
-PR interval: unable to calculate at rates greater than 150
-QRS: usually normal

atrial flutter - answer-rate: atrial 250-350. Ventricular depends on degree of AV block
-rhythm: atrial regular. Ventricular varies with AV conduction
-P wave: "sawtooth" or "flutter waves" are visible between QRS complexes
-PR interval: unable to be calculated
-QRS: usually normal

atrial fibrillation - answer-rate: atrial >350. Ventricular depends on degree of AV block
-rhythm: atrial irregular. Ventricular irregular