Practice Rhythm Strips

Practice Rhythm Strip 8
Rate:	About 98 BPM	PR intervals:	Normal, except in events
Regularity:	Regular with events	QRS width:	Wide
P waves:	Present, except in event	Grouping:	None
Morphology:	Normal, except in events	Dropped Beats:	Present
Axis:	Normal, except in events	Rhythm:	Sinus rhythm with a unifocal couplet and a PVC
P:QRS ratio:	1:1, except in events

The rhythm strip shows an underlying sinus rhythm that is undisturbed by the extra events occurring in the ventricles (P waves timing is represented by the pink dots, QRS timing by the blue dots). Notice that the pauses are fully compensatory. The P waves show through and fuse with the morphology of the PVCs at the start of the complexes. The underlying ventricular depolarizations during the sinus complexes demonstrate a varying degree of aberrancy in ventricular conduction.

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