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KMID : 0364019930260020148
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Korean Journal of Thoracic and Cardiovascular Surgery
1993 Volume.26 No. 2 p.148 ~ p.153
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Preparation of the Internal Mammary Artery Craft in Coronary Artery Bypass Surgery -Comparison of Free Mammary Artery Flows-
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Abstract
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To compare two methods of mammary pedicle graft graft preparations with free internal mammary artery flow, we studied 31 patients who had the left internal mammary artery harvested for coronary artery bypass grafting. The free flow was measured
at
the
transected opening of 2 to 3 cm distal to the point of bifurcation on mean arterial pressure of 50 to 55mmHg during cardiopulmonary bypass.
Group I comprised 14 patients, whose grafts were sprayed and wrapped in sponges soaked in diluted papaverine solution (60 mg in 40 ml Hartmann's solution). An average 80 minutes after the preparations, free flow of the internal mammary artery
ranged
from 20 to 80 ml/min (mean 37.7 ml/min).
Group II comprised 17 patients, who had internal mammary artery takedown under the exact conditions used in group I. The grafts were sprayed and wrapped in sponges soaked in the diluted papaverine solution as in group I. After an average of 28
minutes,
free flow ranged from 8 to 28 ml/min (mean 17.6 ml/min). Intraluminal papaverine of the same dilution was then injected without any hydrostatic dilatation and flows increased upto 37 to 150 ml/min (mean 74.7 ml/min).
This study shows that intraluminal papaverine preparation method markedly increases free mammary artery flow which is inadequate with external papaverine preparation. (Korean J Thoracic Cardiovas Surg 1994; 27:148-53)
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KEYWORD
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