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Ann Thorac Surg 1999;67:1215
© 1999 The Society of Thoracic Surgeons
a Division of Cardiothoracic Surgery, Harbor-UCLA, 1000 W. Carson St, Torrance, CA 90509 USA
To the Editor
We thank Dr Toda and associates for their interest and kind comments on our reported technique. We agree that in complicated patent ductus, a transpulmonary approach to the defect using normothermic cardiopulmonary bypass and balloon occlusion is the safest technique. The 1976 report by Taira and Akita recommends that patch repair be done with the balloon catheter passing through the center of the patch to improve visualization when nearing completion of the repair. In those cases where we have found patch repair (rather than pledgetted suture repair) necessary, we have been able to work around the catheter without much difficulty. Another difference is that Dr Toda reports aortic cross-clamping in Table 1. We have not found cross-clamping and cardioplegic arrest necessary when using this technique. Either way, the end result is safer and less troublesome than profound hypothermia and circulatory arrest, descending aortic cross-clamping, or simple ligation of a large or calcified patent ductus.
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