pacemaker failure due to loss of fluid seal in a patient with a 5/6 mm pacemaker header port and a 5 mm unipolar lead

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ID: 152226
2013
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Ranked #52 of 63 articles by views in Medical decision making : an international journal of the Society for Medical Decision Making

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Abstract
Introduction: Before IS-1 (3.2 mm) standardization of pacemaker leads and connectors, 5/6 mm connector ports accomodated 5 mm or 6 mm diameter lead connector pins. Case report: A patient with sick sinus syndrome underwent implantation of a 5 mm unipolar atrial lead, mated to a 5/6 mm connector port Medtronic Spectrax Sx 5985 pacemaker. Pulse generator reached ERI in 2006, with change out to a Medtronic Sigma SSR306 (5/6 mm connector port) and preservation of the 5 mm lead. She was admitted in 2010 for atrial lead non capture from blood leak and corrosion of the header-connector pin apparatus. Discussion: 5/6 mm pacemaker header ports have a 5 mm flexible sealing ring at the port entrance to seal 5 mm or 6 mm lead connector pins. The inner barrel diameter of the connector port is 6 mm and insertion of a 5 mm lead results in a 0.5 mm tolerance circumferentially. Should the seal be compromised, blood can corrode the apparatus. To minimize this, we can employ (a) a cinching tie to further seal the silicone ring (b) universal adaptor sleeves (c) splice kits (d) lead adaptor kits. Aging leads, adaptor kits or sleeves themselves can result in lead failure. It may be safer to re-implant the entire system. Conclusion: A 5/6 mm configuration pacemaker header connector port allows for significant tolerances when a 5 mm lead is used. Consideration must be made to prevent leaks.
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Authors ;Paul Chun Yih Lim, MBBS;Boon Yew Tan;Kah Leng Ho;Chee Keong Ching;Wee Siong Teo
Journal Medical decision making : an international journal of the Society for Medical Decision Making
Year 2013
DOI
10.1016/S0972-6292(16)30691-X
URL
http://www.sciencedirect.com/science/article/pii/S097262921630691X
Keywords
blood leakdiseases of the circulatory (cardiovascular) system

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