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Contributions of remote monitoring to the follow-up of implantable cardioverter-defibrillator leads under advisory

Laurence Guédon-Moreau and alt. on behalf of the ECOST trial Investigators
10 mai 2010 http://eurheartj.oxfordjournals.org/

Aims Automatic daily transmission of data from implantable cardioverter-defibrillators (ICDs) enables the remote monitoring of device status and leads function. We report on a 2-year experience with remote monitoring in 40 recipients of high-voltage ICD leads, prone to fracture and under advisory since October 2007.

Methods and results The ICDs were remotely monitored as well as systematically interrogated in the ambulatory department every 3 months. The patients were also seen in case of abnormal lead impedance, or other manifestations consistent with lead dysfunction. Over a mean follow-up of 22 ± 4 months after ICD implantation, four lead dysfunctions were suspected because of remotely transmitted oversensing of noise artifacts, abrupt rise in pacing impedance, or both. A lead fracture needing lead replacement was confirmed in three patients (7.5%), two of them before any inappropriate therapy and one after the delivery of three inappropriate shocks. No lead failure was observed in the remaining 36 patients, either at the time of ambulatory visits or during remote monitoring.

Conclusion Remote monitoring allowed the early and reliable detection of ICD leads failure without requiring any patient intervention. Lire l'article

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