AV Junctional Arrhythmias

Question 1

Premature junctional contractions

Answer 1

Rate: that of the underlying rhythm

Rhythm: irregular

P wave: early, hidden, or inverted before or after QRS

PR interval: short, usually less than .12 seconds

QRS: premature, less than or = to .12 seconds

Question 2

Accelerated junctional rhythm

Answer 2

Rate: 60-100 bpm

Rhythm: regular

P wave: hidden or inverted before of after the QRS

PR interval: short, usually less than .12 seconds

QRS: less than or = to .12 seconds

Question 3

Junctional escape rhythm

Answer 3

Rate: 40-60 bpm

Rhythm: regular

P wave: hidden or inverted before of after the QRS

PR interval: short, usually less than .12 seconds

QRS: less than or = to .12 seconds

Question 4

Junctional tachycardia

Answer 4

Rate: 100-160 bpm

Rhythm: regular

P wave: hidden or inverted before of after QRS

PR interval: short, usually less than .12 seconds

QRS: less than or = to .12 seconds