Keep Right: Inadvertent Placement of a Temporary Pacing Lead in the Left Ventricle.

Inadvertent lead malposition (ILM) of a temporary pacing wire is a rare complication that can occur during pacemaker insertion. We report a case of a 40-year-old man who presented late following an inferior ST segment elevation myocardial infarction. Temporary cardiac pacing was performed for symptomatic complete heart block. A 12-lead electrocardiogram (ECG) on the following day showed a paced QRS complex with right bundle branch block pattern. Malposition of the pacing wire was suspected to be in the left ventricle and confirmed by chest X-rays and an echocardiogram. This article discusses the occurrence of inadvertent left ventricle pacing and its management. Early recognition with the help of echocardiogram and ECG will aid in reducing the incidence of such complications.