ECG Guru - Instructor Resources

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Failure to capture

Transcutaneous Pacemaker: Failure to Capture and False QRS Artifact

Wed, 01/06/2016 - 23:05 -- Dawn

 When using a transcutaneous pacemaker, it is important to remember that the pacing stimulus can cause an artifact on the ECG.  This artifact is sometimes confused for a QRS complex.  Also, the pacing of the chest wall muscles can be misinterpreted as

ECG Basics: Pacemaker Failure to Capture

Sun, 04/27/2014 - 17:29 -- Dawn

This ECG is taken from a patient with an implanted pacemaker who was experiencing near-syncope.  She was taken to the hospital by EMS, where the pacemaker was adjusted to obtain ventricular capture.  This ECG did not have a Lead II rhythm strip, so the 12-lead ECG is being presented.  The P waves have been marked with a "P", pacemaker spikes marked with an arrow, and the QRS complexes marked with a "J" because they are junctional.

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