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J Thorac Cardiovasc Surg 2003;126:2106-2107
© 2003 The American Association for Thoracic Surgery
Letter to the editor |
Department of Cardiovascular Surgery, Turkiye Yuksek Ihtisas Hospital, Sihhiye, Ankara, 06100, Turkey
To the Editor:
In their report Galajda and colleagues1 describe their technique of brachial artery cannulation for two patients with type A aortic dissection. One patient was cannulated through left brachial artery, and the authors mentioned that they performed the operation without circulatory arrest. Preferring the left brachial artery instead of right for cannulation site may limit the use of open distal repair technique when necessary. Our group has reported 104 cases of arch repair using right brachial artery where open distal repair was easily performed by reducing the flow and applying atraumatic vascular clamps to the innominate and left carotid arteries.2
The authors have reported using 20F cannulas during their two operations. According to our experience, a 20F cannula is too large for the great majority of patients. We preferred using the Calmed nonwire reinforced venous return catheter (California Medical Laboratories, Irvine, Calif), the tip of which can be trimmed to 16F to 18F diameter according to the size of the patients brachial artery due to its conical shape.
The authors suggest that the end of the inserted cannula should not extend beyond the origin of the subscapular artery to protect collateral circulation of the upper limb. We inserted the catheter into the brachial artery as its tip is positioned 5 to 7 cm proximal to the arteriotomy, which in most cases extended beyond the origin of the subscapular artery, but this did not cause upper limb ischemia in any of our patients.
We are in complete agreement with the authors that the brachial artery is an easily accessible site for cannulation. In our current practice it is the standard for the repair of aneurysms and dissections of the aortic arch.
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