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Europace 2003 5(2):207-211; doi:10.1053/eupc.2002.0288
© 2003 by European Society of Cardiology
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Short and long-term single-centre experience with an S-shaped unipolar lead for left ventricular pacing

M. Fatemi, Y. Etienne, M. Gilard, J. Mansourati and J. J. Blanc

Department of Cardiology, Brest University Hospital Brest, France

Left ventricular-based pacing is an established method for treatment of congestive heart failure in patients with ventricular dyssynchrony. The transvenous epicardial approach is the method of choice to pace the left ventricle.

AIMS: To evaluate short and long-term stability and pacing and sensing performance of an S-shaped non-steroid unipolar lead.

METHODS: Forty-eight procedures were performed in 43 consecutive patients (mean age: 70±8 years, 32 males) with severe congestive heart failure. The left ventricular lead was placed into a coronary sinus tributary. Pacing and sensing thresholds and pacing impedance were measured at implant, 1 and 6 months.

RESULTS: The mean procedure time was 90·0±35·5 min. Pacing thresholds at implant, 1 and 6 months were 1·1±0·8 V, 1·9±1·3 V and 1·9±1·5 V respectively. In 7 patients, lead implantation was unsuccessful. One of them had a successful second attempt. Lead revision was performed in 5 patients for loss of capture.

CONCLUSION: The S-shaped unipolar lead evaluated in this study provides stable long-term position and pacing thresholds. Recent improvement of this S-shaped lead model will hopefully reduce the rate of implantation failures and acute dislodgements.

Key Words: Left ventricular pacing, congestive heart failure, lead implantation

Correspondence: Jean-Jacques Blanc, MD, Département de Cardiologie, CHU de la Cavale Blanche, Bd Tanguy Prigent, 29609, Brest cedex, France. Tel.: (33) 2 98 34 73 91/92; Fax: (33) 2 98 34 73 93; E-mail: Jean-Jacques.Blanc{at}univ-brest.fr


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