Key result
Extraction of a retained, inactive pacemaker lead completely resolved recurrent ventricular tachycardia and syncope caused by a redundant lead loop in the right ventricle.
Retained inactive pacemaker leads can cause mechanical irritation leading to ventricular tachycardia, highlighting the importance of complete lead extraction when feasible.
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Hypothesis-generating for mechanical VT from retained leads; prospective studies needed before changing extraction thresholds.
Datta et al. (2011) studied this question. Extraction of a retained, inactive pacemaker lead completely resolved recurrent ventricular tachycardia and syncope caused by a redundant lead loop in the right ventricle.
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