Active fixation atrial leads: randomized comparison of two lead designs.

Pacing and Clinical Electrophysiology : PACE
G N KayV J Plumb

Abstract

Active fixation leads have reduced the incidence of lead dislodgement in patients with permanent pacemakers. However, theoretic concern that the tissue trauma associated with a myocardial screw-helix may increase the chronic pacing threshold of active compared to passive fixation leads has remained. Whether active fixation leads with a stimulating electrode that is independent of the fixation mechanism are associated with a lower chronic pacing threshold than leads utilizing a screw-helix for both fixation and stimulation is unknown. The present prospective, randomized study compared the acute and chronic atrial pacing and sensing characteristics of two unipolar active fixation leads, one utilizing a screw-helix for both fixation and electrical stimulation, the other with an active porous tip electrode and an electrically inactive helix. Patients were randomized to receive either a Medtronic 6957J lead with an electrically active myocardial screw-helix or a Cordis 329-101P lead with an inactive helix and a porous tip electrode. The baseline characteristics of the groups were comparable. At implantation, the 329-101P lead had a lower mean voltage threshold than the 6957J lead (0.61 +/- 0.16 V vs 1.05 +/- 0.34 V, P = 0.0004). The...Continue Reading

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Citations

Jun 8, 2007·Journal of Cardiovascular Electrophysiology·Frédéric SacherWilliam G Stevenson
May 4, 2000·Pacing and Clinical Electrophysiology : PACE·E M BuysJ J Defauw
Aug 1, 1994·Pacing and Clinical Electrophysiology : PACE·M GliksonD L Hayes
Nov 14, 1997·Pacing and Clinical Electrophysiology : PACE·D T ConnellyJ Lipke
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Nov 24, 1998·Pacing and Clinical Electrophysiology : PACE·M KindermannH Schieffer
Jul 6, 2000·Pacing and Clinical Electrophysiology : PACE·U K WiegandH A Katus
Sep 24, 2005·Pacing and Clinical Electrophysiology : PACE·Peter M KistlerHarry G Mond
May 1, 1993·Pacing and Clinical Electrophysiology : PACE·H JamidarD W Reynolds
Dec 29, 2020·JACC. Clinical Electrophysiology·Soroosh KianiMichael S Lloyd

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