Concealed malfunction of the temporary pacemaker

Alasti, Mohammad; Haghjoo, Majid; Alizadeh, Abolfath and Sadr-Ameli, Mohammad Ali (2006) Concealed malfunction of the temporary pacemaker. Indian Pacing and Electrophysiology Journal, 6 (2). pp. 133-134. ISSN 0972-6292

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The 12-lead ECG shows sequential atrial and ventricular pacing (Figure 1A). A tracing, obtained simultaneously during pacemaker interrogation, disclosed pacemaker functioning as VDD mode (Figure 1B). The careful examination of this pacemaker tracing showed that there is a pacing stimulus before each P wave (compatible with DDD mode). This paradox can only be explained by displacement of the temporary pacing lead to right atrium and right atrial stimulation by temporary pacemaker. In this setting, each temporary pacemaker-induced atrial depolarization is tracked by the right atrial lead of the permanent pacemaker as intrinsic P wave. Fluoroscopic study confirmed this explanation (Figure 2). The displaced temporary pacing lead was seen near the lateral right atrial wall. Temporary pacemaker lead had been inserted before replacement of permanent pacemaker.

EPrint Type:Article
Uncontrolled Keywords:Concealed malfunction; Temporary pacemaker
Subjects:Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Techniques, Cardiovascular > Heart Function Tests > Electrocardiography
-Journal Repositories > Indian Pacing and Electrophysiology Journal
Investigative Techniques > Equipment Failure
Therapeutics > Cardiac Pacing, Artificial
Pathological Conditions, Signs and Symptoms > Pathologic Processes > Arrhythmia
ID Code:1453
Deposited By:Indian Pacing and Electrophysiology Journal
Deposited On:29 March 2006

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