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Clinical Evaluation of a Single‐Pass Implantable Electrode for All Modes of Pacing. The “Crown of Thorns” Lead
Author(s) -
WAINWRIGHT RAY,
CRICK JONATHAN,
SOWTON EDGAR
Publication year - 1983
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/j.1540-8159.1983.tb04348.x
Subject(s) - medicine , lead (geology) , intracardiac injection , cardiology , ventricular pacing , surgery , heart failure , geomorphology , geology
Physiological pacing was instituted in 37 patients (33 men and 6 women), mean age 67 years (range 33–77 years), using a variety of multiprogram‐mable generators attached to a permanent single‐pass dual chamber electrode. Eleven patients were paced in VAT mode (Cordis 208A or Siemens‐Elema 625 generator), two patients in DVI mode (Inter‐medics Cyberlith IV generator) and four patients in DDD mode (Siemens‐Elema 664/P33 or Telec‐tronics Autima unit). Mean intracardiac P wave amplitude was 2.0 mV ± 0.78/SD, range 0.7–3.6 mV, and mean atrial and ventricular pacing thresholds were 1.0 V and 0.5 V, respectively. Fourteen patients had completely successful A‐V pacing during a follow‐up period of 4‐33 months (mean 7 ± 2.7 months). Two failures were associated with malposition of the atrial crown and occurred exclusively with the Cordis 208A generator. In both patients generator replacement using a more sensitive unit (Siemens‐Elema 625) resulted in successful VAT pacing for most of the time, Complete failure of A‐V pacing occurred in only one patient who died from coronary artery disease after four months of follow‐up. Thus, all of the remaining 36 patients achieved long‐term (6 months) satisfactory physiological pacing using this new lead. We conclude that the “Crown of Thorns” electrode is a successful single‐pass unipolar lead and can be used with all types of dual chamber generator for all modes of pacing.