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Complications with the MICRA TPS Pacemaker System: Persistent Complete Heart Block and Late Capture Failure
Author(s) -
HOLM NIELS,
MÜLLER ANDREAS,
ZBINDEN RAINER
Publication year - 2017
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/pace.12998
Subject(s) - medicine , sick sinus syndrome , heart block , cardiology , catheter , surgery , heart failure , ventricular pacing , atrioventricular block , perforation , electrocardiography , punching , materials science , metallurgy
A Medtronic MICRA transcatheter pacing system (Medtronic, Minneapolis, MN, USA) was implanted in an 86‐year‐old patient with sick sinus syndrome and left bundle branch block after transfemoral aortic valve implantation. During implantation she developed a persistent complete heart block due to manipulation with the large‐bore delivery catheter. Two weeks later, acute pacemaker dysfunction occurred due to massive increase of pacing threshold and impedance without obvious pacemaker dislocation or myocardial perforation. Recurrent capture failure was seen with pacing output set at 5 V/1.0 ms. Hence, microdislocation or fixation of the tines in the right ventricular trabeculae has to be assumed.