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Ann Thorac Surg 1996;61:840-844
© 1996 The Society of Thoracic Surgeons

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Original Articles: Cardiovascular

Coarctation Repair Using End-to-Side Anastomosis of Descending Aorta to Proximal Aortic Arch

Divisions of Cardiothoracic Surgery and Pediatric Cardiology, University of California, San Francisco, California

Accepted for publication November 3, 1995.

Background. Recurrent aortic coarctation after primary operative repair in the neonate and small infant is seen most commonly within the first year of life. Inadequate removal of ductal tissue, failure to address hypoplasia of the aortic arch, and suture line tension have been cited as important factors in early recurrence.

Methods. To address these issues, we have used a technique of coarctation resection and extended anastomosis of the descending aorta to the undersurface of the aortic arch. The salient features of this approach include extensive mobilization of the aortic arch and neck vessels, careful trimming of all ductal tissue, ligation of the isthmus just beyond the left subclavian artery, and end-to-side anastomosis of the descending aorta to a separate incision in the undersurface of the aortic arch proximal to all tubular hypoplasia. Between July 1992 and January 1995, 19 consecutive neonates (median age, 13 days) and 4 consecutive infants under 3 months of age (median age, 69 days) with a mean peak systolic upper to lower extremity resting gradient of 27.9 ± 16.9 mm Hg underwent repair of aortic coarctation and tubular hypoplasia of the arch. Other procedures performed at the time of repair included ligation of a patent ductus arteriosus (n = 19), pulmonary artery banding (n = 3), and closure of ventricular septal or atrial septal defect (n = 3).

Results. There were no perioperative deaths. Early postoperative complications included a recurrent laryngeal nerve injury and a transient focal tonic clonic seizure. There was one late death, after a subsequent intracardiac surgical procedure, at a median follow-up of 16 months (range, 1 to 29 months). Twenty-one of 22 late survivors were free of recurrent aortic coarctation by echocardiography findings and clinical examination, with a median upper to lower extremity gradient of 0 mm Hg. Reintervention for recurrent aortic coarctation was not required in any survivor.

Conclusions. The technique described herein completely removes all potentially abnormal tissue from the aorta, including ductal tissue and all tubular hypoplastic tissue proximal to the coarctation site.

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