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Ann Thorac Surg 2000;70:1931-1934
© 2000 The Society of Thoracic Surgeons

Original article: cardiovascular

DDD pacing mode survival in children with a dual-chamber pacemaker

Emanuela Valsangiacomo, MDa, Luciano Molinari, PhDa, Mariette Rahn-Schönbeck, MDb, Urs Bauersfeld, MDa

a Division of Cardiology, University Children’s Hospital, Zurich, Switzerland
b Department of Cardiovascular Surgery, University Hospital, Zurich, Switzerland

Accepted for publication May 13, 2000.

Address reprint requests to Dr Bauersfeld, Division of Cardiology, University Children’s Hospital, Steinwiesstr 75, CH-8032 Zurich, Switzerland
e-mail: bauersfe{at}kispi.unizh.ch

Background. The persistence of DDD pacing is well documented in adults, however, in children survival of the DDD pacing mode is less clear.

Methods. We studied the survival of dual-chamber (DDD) pacing in 36 children aged 1 week to 16 years who underwent implantation of a dual-chamber pacing system between January 1986 and October 1998. The children were divided in the following two groups: 26 had epicardial pacing systems and 10 had endocardial pacing systems.

Results. During long-term follow-up 11 patients lost the DDD pacing mode. The DDD pacing survival rate at 3 months and 1, 2, and 5 years was 80%, 77%, 73%, and 69%, respectively. Age, weight, congenital heart disease, and epicardial pacing leads were not found to be risk factors for loss of DDD pacing mode. However, P-wave values of less than 2.5 mV at implantation of epicardial leads were associated with loss of the DDD pacing mode.

Conclusions. The majority of children remain in the DDD pacing mode during long-term follow-up. A P-wave value of less than 2.5 mV at implantation of epicardial leads is a risk factor for loss of the DDD pacing mode.




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