Journal Article

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

in EP Europace

Published on behalf of European Heart Rhythm Association of the European Society of Cardiology (ESC)

Volume 5, issue 2, pages 207-211
Published in print April 2003 | ISSN: 1099-5129
Published online April 2003 | e-ISSN: 1532-2092 | DOI: http://dx.doi.org/10.1053/eupc.2002.0288
Short and long-term single-centre experience with an S-shaped unipolar lead for left ventricular pacing

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Preview

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.

Keywords: Left ventricular pacing; congestive heart failure; lead implantation

Journal Article.  0 words. 

Subjects: Cardiovascular Medicine

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