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Surgical approach to complicated cervical aortic arch: anatomic, developmental, and surgical considerations

Published online by Cambridge University Press:  19 August 2008

Doff B. McElhinney*
Affiliation:
Division of Cardiothoracic Surgery, University of California, San FranciscoUSA
LeNardo D. Thompson
Affiliation:
Division of Cardiothoracic Surgery, University of California, San FranciscoUSA Divisions of Cardiothoracic Surgery and Pediatric Cardiology, Valley Children's Hospital, Fresno, CAUSA
Paul M. Weinberg
Affiliation:
Division of Pediatric Cardiology, Children's Hospital of Philadelphia, USA
Kenneth L. Jue
Affiliation:
Divisions of Cardiothoracic Surgery and Pediatric Cardiology, Valley Children's Hospital, Fresno, CAUSA
Frank L. Hanley
Affiliation:
Division of Cardiothoracic Surgery, University of California, San FranciscoUSA
*
Doff B. McElhinney, MD, Children's Hospital of Philadelphia, 34th Street and Civic Center Blvd, Rm 9557, Philadelphia, PA 19104USA. Tel: (215)590–1000; Fax: (215) 590–2768

Abstract

Background

Abnormalities of brachiocephalic arterial branching and arch laterality are common in patients with a cervical aortic arch. In addition, structural anomalies of the arch such as obstruction, aneurysms, and tortuosity are found in a significant number of cases.

Methods

Between 1990 and 1998, 6 patients underwent surgery for an obstructed right cervical arch. A significant obstruction was present at the transverse or distal arch in all patients, and was recurrent after previous repair in 2. In 1 patient, there was also a multi-lobed aneurysm of the aortic segment contiguous to the obstruction, and in 2 there was marked tortuosity of the arch. In all cases, the order of origin of the head and neck vessels was abnormal, and obstruction of 1 or more brachiocephalic vessels was found in 3. A vascular ring was present in all patients, with a right aortic arch and aberrant left subclavian artery in 4 patients and a double aortic arch with a dominant right cervical arch in 2. The descending aorta was circumflex (left-sided) in 3 patients. Three patients were repaired through a standard right posterolateral thoracotomy, and 3 through a median sternotomy. Patch augmentation aortoplasty was used in 2 patients, a tube graft from the ascending to descending aorta in 2, end to side anastomosis of the descending aorta to the proximal arch in 1, and direct anastomosis to reconstruct an atretic left-sided component of a double arch in 1.

Results

Repair was successful in all cases, with no perioperative complications. At follow-up ranging from 1 to 9 years, all patients were alive and well, with no recurrence of arch obstruction or other significant complications. Fluorescent in situ hybridization revealed microdeletion of chromosome 22q 11 in 1 patient (not performed in the others).

Conclusions

Structural anomalies of the arch are relatively common in patients with a cervical aortic arch. Such abnormalities may be the result of hemodynamic conditions and/or abnormal vascular tissue related either to the cervical position of the arch or its embryologic precursors. Given the highly variable anatomy of patients with a complicated cervical aortic arch, surgical considerations will vary in kind.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 2000

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