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Role of the Inferior Thyroid Vein after Left Brachiocephalic Vein Division During Aortic Surgery  

Park, Hyung-Ho (Department of Thoracic and Cardiovascular Surgery, Chosun University Hospital)
Kim, Bo-Young (Department of Thoracic and Cardiovascular Surgery, Sangmoo Hospital)
Oh, Bong-Suk (Department of Thoracic and Cardiovascular Surgery, Chonnam National University, College of Medicine)
Yang, Ki-Wan (Department of Thoracic and Cardiovascular Surgery, Chonnam National University, College of Medicine)
Seo, Hong-Joo (Department of Thoracic and Cardiovascular Surgery, Chosun University Hospital)
Lim, Young-Hyuk (Department of Thoracic and Cardiovascular Surgery, Chosun University Hospital)
Kim, Jeong-Jung (Department of Thoracic and Cardiovascular Surgery, Chosun University Hospital)
Publication Information
Journal of Chest Surgery / v.35, no.7, 2002 , pp. 530-534 More about this Journal
Abstract
Background: In aortic surgery, division and ligation of the left brachiocephalic vein(LBV) may improve exposure of the aortic arch but controversy continues about the safety of this division and whether a divided vein should be reanastomosed after arch replacement was completed. The safety of LBV division and the fate of the left subclavian venous drainage after LBV division were studied. Material and Method: From November 1998 to January 2001, planned division and ligation of the LBV on the mid-line after median sternotomy was peformed in 10 patients during the aortic surgery with the consideration of local anatomy and distal aortic anastomosis. Assessment for upper extremity edema and neurologic symptoms, measurement of venous pressure in the right atrium and left internal jugular vein, and digital subtraction venography(DSV) of the left arm were made postoperatively. Result: In 10 patients there was improvement in access to the aortic arch for procedures on the ascending aorta or aortic arch. The mean age of patients was 62 years(range 24 to 70). Follow-up ranged from 3 weeks to 13 months. One patient died because of mediastinitis from methicilline-resistant staphylococcus aureus strain. All patients had edema on the left upper extremity, but resolved by the postoperative day 4. No patient had any residual edema or difficulty in using the left upper extremity during the entire follow-up period. No patient had postoperative stroke. Pressure difference between the right atrium and left internal jugular vein was peaked on the immediate postoperative period(mean peak pressure difference = 25mmHg), but gradually decreased, then plated by the postoperative day 4. In all DSV studies left subclavian vein flowed across the midline through the inferior thyroid venous plexus. Conclusion: We conclude that division of LBV is safe and reanastomosis is not necessary if inferior thyroid vein, which is developed as a main bridge connecting the left subclavian vein with right venous system, is preserved.
Keywords
Aortic arch; Aortic aneurysm. arch; Brachiocephalic vein;
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