Minimal sternotomy approach for congenital heart operations

Background. In recent years, minimal access cardiac operations have increas ed in application in both the adult and pediatric population. As our experi ence has grown with these approaches to atrial septal defect closure, we ha ve expanded the same approach to the repair of more complex congenital hear t disease. Methods. At the Children's Hospital in Boston, from August 1996 to November 1999, a minimal sternotomy approach was used to surgically correct 104 chi ldren with congenital heart defects other than atrial septal defect. The ap proach, in most patients, consisted of a skin incision based over the xiphi sternum, 3.5 to 5 cm in length, with division of the xiphoid only and eleva tion of the sternum by fixed retractor. All patients underwent cannulation for cardiopulmonary bypass through the great vessels in the chest using thi s same incision. The lesions corrected included ventricular septal defect i n 41 patients, tetralogy of Fallot in 27, common atrioventricular canal in 15, mitral valve operation in 3.5, and other defects in 18 patients. There were 53 male and 51 female patients. Mean age at operation was 1.4 years (r ange, 2 weeks to 11 years). Results. There were no deaths. The mean cardiopulmonary bypass time was 71 minutes (standard deviation, 19 minutes), mean cross-clamp times 40.8 minut es (standard deviation, 13 minutes), and length of stay 4.5 days (standard deviation, 1.9 days). Complications included transient atrioventricular blo ck in 2 patients, pleural effusion requiring drainage in 4, and pericardial effusion in 3 patients. When compared to similar lesions repaired using a full sternotomy approach there was no difference in operating times and len gth of stay tended to be shorter in the minimal sternotomy group. Conclusions. A minimal sternotomy approach can be used to repair congenital cardiac lesions other than atrial septal defects. It gives good exposure, particularly for transatrial repairs, does not prolong ischemic times, and may lead to shorter hospital stay. (C) 2001 by The Society of Thoracic Surg eons.