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Ann Thorac Surg 1994;57:183-187
© 1994 The Society of Thoracic Surgeons
Department of Anesthesiology and Department of Thoracic and Cardiovascular Surgery, Hôpital G. et R. Laënnec, Nantes, France
Accepted for publication March 15, 1993.
* Address reprint requests to Dr Bizouarn, Département d'Anesthésie-Recanimation, Hôpital G. et R. Laënnec, 44035 Nantes Cédex, France.
Right ventricular failure after orthotopic heart transplantation (OHT) is classically related to preoperative pulmonary hypertension. However, the role of the enlarged atria in right ventricular dysfunction after OHT remains unclear. For that purpose, the right ventricular function in the first 2 days after OHT was compared in two groups of transplant recipients: 11 patients who underwent standard OHT (group I) and 9 patients who underwent total OHT, which consisted of total excision of both the left and right atria and OHT of an intact donor heart with its atria as well as its ventricle (group II). Right ventricular ejection fraction, cardiac index, and right-sided pressures were recorded at baseline and 4, 8, 12, 24, and 48 hours after OHT using a Swan-Ganz catheter with a rapid-response thermistor. Right ventricular function parameters did not differ between groups; they were characterized by a decrease in right ventricular ejection fraction and an increase in right ventricular end-diastolic volume index whereas cardiac index and right-sided pressures remained normal or slightly increased. Ischemic time (177 ± 41 minutes in group I versus 178 ± 39 minutes in group II) and preoperative pulmonary vascular resistance (1.9 ± 0.7 Wood units in group I versus 3.0 ± 1.5 Wood units in group II) were not different between groups. These results suggest that the anatomic and physiologic advantages offered by the modified technique of OHT had no clinical relevance in this group of patients with low preoperative pulmonary vascular resistances when compared with a group of patients who underwent transplantation with the standard technique. Further studies are necessary to prove what is the best technique in patients with high preoperative pulmonary vascular resistance.
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