Transcutaneous pacing and temporary transvenous pacing or an implanted cardiac pacemakerAn electronic pulse generator that stimulates depolarization of the atria and/or the ventricles. 1. Six Second ECG Guidebook (2012), T Barill, p. 201 with a lead in a ventricle (typically right ventricleThe right ventricle ejects blood through the main branches of the left and right pulmonary arteries to the lungs. The chambers of the heart are the main drivers within an intricate pathway, delivering blood to the lungs for gas exchange...) that initiates a depolarizing wave (pacer spikeThe telling sign that the rhythm is a paced rhythm; since the pacemaker spike is vertical, virtually no time was spent – this suggests strongly that the spike was initiated artificially and not organically (within the heart); note that a... followed immediately by a QRS complexThe electrical representation of ventricular depolarization; the atrial repolarization is also a part of the QRS. ECG interpretation relies heavily on the QRS complex. The QRS complex represents the depolarization of the ventricles. The repolarization of the atria is also...) can produce a paced ventricular rhythmTranscutaneous pacing and temporary transvenous pacing or an implanted cardiac pacemaker with a lead in a ventricle (typically right ventricle) that initiates a depolarizing wave (pacer spike followed immediately by a QRS complex) can produce a paced ventricular rhythm. An....
