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Eur J Cardiothorac Surg 2006;29:1036-1039
© 2006 Elsevier Science NL

Axillary cerebral perfusion for arch surgery in acute type A dissection under moderate hypothermia

^a Clinic for Cardiac Surgery, University Hospital of Geneva, Geneva, Switzerland
^b Cardiac Surgery, Hôpital La Tour-Geneva, Avenue JD Maillard 3, CH 1217 Geneva, Switzerland
^c Cardiac Surgery-Clinic Cecil, Avenue Ruchonnet 53, CH-1003 Lausanne, Switzerland

Received 14 December 2005; received in revised form 28 February 2006; accepted 6 March 2006.

^_* Corresponding author. Tel.: +41 21 3111424; fax: +41 21 3235153. (Email: g.khatchatourov{at}bluewin.ch).

Backgound: Aortic arch surgery is still associated with increased mortality and morbidity especially in acute type A aortic dissection. Adequate brain protection is essential and commonly performed by either antegrade selective perfusion of the brachiocephalic arteries or an interval of profound hypothermic circulatory arrest. We present our experience for open aortic arch repair with continuous antegrade brain perfusion by means of direct cannulation of the right axillary artery, under moderate hypothermia in patients with acute type A aortic dissection. Methods: In, 25 consecutive patients (17 men) with a mean age of 62.6 ± 14.8 years, aortic repair extended to the arch, for acute type A aortic dissection, was performed through a midline sternotomy. The right axillary artery was used for arterial systemic and brain perfusion at a rectal temperature of 25–27 °C. Results: Mean duration of CPB and aortic cross-clamping was 241 ± 55 and 155 ± 72 min, respectively. The mean duration of circulatory arrest of the lower body and brain perfusion was 39.7 (range, 24–55 min). All the patients survived the procedure and all but one were discharged from hospital. One patient had left arm paralysis which he recovered the first postoperative month. There were no other transient or permanent neurologic deficits. A CT scan was performed at discharge for routine postoperative evaluation. There were no local neurovascular complications related to the cannulation site except for one local re-exploration for bleeding. Conclusions: The absence of any major permanent neurologic deficit or any visceral damages in our patients suggests that continuous moderate hypothermic cerebral perfusion, with an interval of circulatory arrest of the lower body, is adequate for acute type A aortic dissection surgery, allowing safe open repair of the distal aortic arch.

Key Words: Aortic dissection • Cerebral perfusion • Circulatory arrest

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