Subclavian crush syndrome: a cause of pacemaker lead fracture.

A 48-year-old male with a symptomatic 2:1 atrio-ventricular block and a dual-chamber pacemaker, implanted one year previously, was admitted due to a syncopal episode. Pacemaker malfunction was identified as the cause of syncope. Subclavian crush syndrome was the cause of the pacemaker malfunction. Its incidence, consequences and management are discussed in this report.