Junctional Rhythms

Junctional escape rhythm rate

< 60 bpm

Junctional escape rhythm rhythm

Regular

Junctional escape rhythm P-wave

Inverted or buried, one before every QRS

Junctional escape rhythm PRI

If P-wave occurs before QRS, PRI will be normal

Junctional escape rhythm QRS

< 0.12 seconds

Accelerated junctional rhythm rate

60–100 bpm

Accelerated junctional rhythm rhythm

Regular

Accelerated junctional rhythm P-wave

Inverted or buried, one before every QRS

Accelerated junctional rhythm PRI

If P-wave occurs before QRS, PRI will be normal

Accelerated junctional rhythm QRS

< 0.12 seconds

Junctional tachycardia rate

100 bpm

Junctional tachycardia rhythm

Regular

Junctional tachycardia P-wave

Inverted or buried, one before every QRS

Junctional tachycardia PRI

If P-wave occurs before QRS, PRI will be normal

Junctional tachycardia QRS

< 0.12 seconds

Premature junctional complex rate

Dependent on underlying rhythm

Premature junctional complex rhythm

Underlying rhythm regular, overall irregular due to ectopic beats

Premature junctional complex P-wave

Absent or inverted, may occur before, during, or after QRS

Premature junctional complex PRI

If P-wave before QRS, PRI will be normal

Premature junctional complex QRS

< 0.12 seconds

Premature junctional complex etiology

May have no apparent cause, increased sympathetic tone, damage to AV junction, hypoxia, digitalis toxicity, cardiovascular disease