ECG Library

Save

Miscellaneous ECG 35

This rhythm strip shows 1:1 conduction of sinus P waves with a normal PR interval at a rate of about 82 beats per minute (RR = 0.72 sec). After the fourth beat there is an isoelectric baseline with no P wave; the RR interval is 1.40 sec (basically 2 X 0.72 sec) with resumption of the sinus rhythm.

This represents second-degree type II sinoatrial exit block. Click the link below for a full review of this rhythm.

Related Topic Reviews: ECG Basics Tutorial