A review of FDA adverse event reports has revealed that some Abbott (NYSE:ABT) implantable cardioverter defibrillator (ICD) leads were much more likely than those made by Boston Scientific or Medtronic to fail due to internal insulation breaches (IBR).
Researchers at the Minneapolis Heart Institute Foundation combed through the FDA MAUDE database from 2008 to 2018 for reports of IBR breaches and other ICD failures. They found that insulation breaches led to 93% of Abbott’s (formerly St. Jude Medical’s) Durata pacemaker lead failures. All 11 failures to treat ventricular tachycardia/ventricular fibrillation were caused by high-voltage shorts between the proximal and distal right ventricular coil cables or sensing conductor. Testing showed low values of high-voltage impedance in three of the leads after a shock or an aborted shock or by an alert, they wrote in an article published in the journal Heart Rhythm.