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Ann Thorac Surg 1997;64:1389-1395
© 1997 The Society of Thoracic Surgeons

Original Articles: Cardiovascular

Prevention of Unbalanced Lung Perfusion and Atrial Arrhythmias After the Lateral Tunnel Operation

Monica C. Robotin, FRACS, Alain Serraf, MD, Lucille Houyel, MD, Jerome Petit, MD, François Lacour-Gayet, MD, Jacqueline Bruniaux, MD, Claude Planche, MD

Department of Pediatric Cardiac Surgery, Marie-Lannelongue Hospital, Le Plessis-Robinson, France

Accepted for publication May 29, 1997.

Background. The lateral tunnel operation has become increasingly popular with pediatric cardiac surgeons, as it is technically reproducible, is relatively easy to perform, and can be used in a variety of patients with single-ventricle physiology. The main drawbacks of the original operation are uneven blood flow distribution to the lungs and increasing incidence of supraventricular arrhythmias over time.

Methods. In 1988, we modified this technique by avoiding narrowing of the tunnel at the superior vena cava–atrial junction, avoiding incorporation of the crista terminalis in the baffle suture line, and minimizing damage to the sinoatrial node. Between 1988 and 1995, 19 patients underwent this operation at Marie-Lannelongue Hospital in Paris.

Results. There was one early death and no late deaths. At a mean follow-up of 5.2 years, all survivors are in New York Heart Association class I. Early atrial flutter, related to atrial scarring secondary to multiple previous surgical procedures, developed in 1 patient, and late atrial flutter developed in 1 patient who had a previous Blalock-Hanlon atrial septectomy. All patients are currently in sinus rhythm. Atrial flutter did not occur in 17 patients who had had no previous atrial wall surgical procedure.

Conclusions. We believe that the good long-term clinical results are directly attributable to our modifications, which ensure optimal hemodynamics and absence of rhythm disturbances. All patients who had not previously undergone operation on the atrial wall were free from supraventricular tachyarrhythmias at a mean follow-up of 5.2 years. This is a consequence of protecting the sinus node, crista terminalis, and Bachmann's bundle.




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