Premium
Long‐Term Experience with a Preshaped Left Ventricular Pacing Lead
Author(s) -
OLLITRAULT JACKY,
RITTER PHILIPPE,
MABO PHILIPPE,
GARRIGUE STÉPHANE,
GROSSIN FRANÇOIS,
LAVERGNE THOMAS
Publication year - 2003
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 - 10.1046/j.1460-9592.2003.00013.x
Subject(s) - medicine , lead (geology) , cardiology , qrs complex , implant , cardiac resynchronization therapy , sinus rhythm , atrial fibrillation , population , heart failure , surgery , ejection fraction , environmental health , geomorphology , geology
OLLITRAULT, J., et al. : Long‐Term Experience with a Preshaped Left Ventricular Pacing Lead.This study describes a long‐term experience with a new LV pacing lead. The study population consisted of 62 patients (85% men,71 ± 10years old) with advanced dilated cardiomyopathy, in NYHA Class III or IV despite optimal drug therapy, and a QRS duration >150 ms. Patients in sinus rhythm were implanted with a triple chamber pacemaker to maintain atrioventricular synchrony. A dual chamber pacemaker was implanted in patients in atrial fibrillation for biventricular pacing only. A clinical evaluation and interrogation of the resynchronization pacemaker were performed at implant, at 1 week (W1), one (M1), four (M4), and seven (M7) months after implantation. A longer follow‐up (2 years) is available for patients implanted at the authors institution. LV measurements were pacing threshold at 0.5‐ms pulse duration and pacing impedance. R wave amplitude (mV) was measured at the time of implantation only. The system was successfully implanted in 86% of patients with the latest design of the lead. Mean R wave amplitude at implant was15 ± 7 mVand mean pacing impedance was1054 ± 254 Ω. Between implant(n = 38)and M7(n = 15), pacing threshold rose from 0.73 ± 0.54 to 1.57 ± 0.60 V (P < 0.001) . In conclusion, the situs lead was successfully implanted in a high percentage of patients. In addition, low pacing threshold and high impedance measured during follow‐up are consistent with a low pacing current drain, ensuring a durable pulse generator longevity. (PACE 2003; 26[Pt. II]:185–188)