Stiffness of the distal tip of bipolar pacing leads.
J Cameron, H Mond, G Ciddor, K Harper, J McKie
Pacing Clin Electrophysiol | Published : 1990
The stiffness of a bipolar pacing lead, particularly between anode and cathode, may be responsible for myocardial penetration and perforation. Following an unprecedented 7% incidence of high threshold exit block with a single model bipolar ventricular endocardial lead, a study was undertaken to compare pacing lead stiffness between anode and cathode of six models of bipolar leads from two manufacturers; Telectronics (T) and Medtronics (M). Four leads had polyurethane insulation; T 030-284 (Laser Dish), T 329-259 (Cordis, Encor), M 4012 (Target Tip), and M 4004 (Capsure). Two leads had silicone rubber insulation; M 5026 (Capsure) and M 5024 (Capsure SP). All leads were subjected to two stiffn..View full abstract