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Ann Thorac Surg 1999;68:40-45
© 1999 The Society of Thoracic Surgeons
a Division of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan
b Department of Anesthesiology, Chang Gung Memorial Hospital, Chang Gung University, Taipei, Taiwan
Address reprint requests to Dr Lin, Department of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital, Chang Gung University, 199, Tun-Hwa North Rd, Taipei, Taiwan 105
Background. Minimally invasive surgical approaches have been applied recently in the management of valvular heart disease. In this report, we reviewed our preliminary experience of minimally invasive aortic valve replacement.
Methods. Eighteen patients were operated on by means of an "I" ministernotomy, and 16 patients were operated on by means of a full median sternotomy during the same period. There was no difference between these two groups in term of age, sex, and preoperative left ventricular ejection fraction. In patients of the ministernotomy group, the operations were approached through an "I" median sternal split, from the second to the fifth intercostal space, 8 to 10 cm in length, with transverse division. Cardiopulmonary bypass was established through aorto–right atrial cannulation with aortic cross-clamping and antegrade or retrograde delivery of blood cardioplegia.
Results. Under direct vision, aortic valve replacement was performed successfully in patients of both groups. The duration of cardiopulmonary bypass time and aortic cross-clamp time was significantly longer in the ministernotomy group than in the full sternotomy group. However, the length of incision, duration of endotracheal intubation, intensive care unit stay, pain score, postoperative length of stay, and return to normal activity interval were significantly shorter and lower in patients of the ministernotomy group than in those of the full sternotomy group. All patients recovered from the operation rapidly. Follow-up was complete in all patients with no late complications. Echocardiographic examination showed good function of aortic prostheses.
Conclusions. Our experience demonstrates that the "I" ministernotomy provides good exposure, reduced wound pain, enhanced recovery, shortened hospital stay, and good cosmetic healing. It may be a good alternative for surgical correction of aortic valve lesions.
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