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J Thorac Cardiovasc Surg 2000;119:682-689
© 2000 The American Association for Thoracic Surgery
CARDIOTHORACIC TRANSPLANTATION |
From the University of Rome "La Sapienza," Departments of Thoracic Surgery,a Anesthesiology,b and Cardiology,c Rome, Italy.
Address for reprints: Federico Venuta, MD, Cattedra di Chirurgia Toracica, Policlinico Umberto I, University of Rome "La Sapienza," Via le del Policlinico, 00100 Rome, Italy (E-mail: Fevenuta{at}tin.it ).
Objective: Lung transplantation is a viable option for patients with cystic fibrosis. The current strategy of selection, based on spirometry and deterioration of quality of life, results in a high mortality on the waiting list. We reviewed the case histories of patients with cystic fibrosis accepted for lung transplantation to ascertain whether pulmonary hemodynamics could contribute to predict life expectancy.
Methods: Forty-five patients with cystic fibrosis were accepted: 11 died on the waiting list (group I), 24 underwent transplantation (group II), and 10 are still waiting (group III). During evaluation we recorded spirometry, oxygen requirement, ratio of arterial oxygen tension to inspired oxygen fraction (PaO 2/FIO 2), arterial carbon dioxide tension (PaCO 2), 6-minute walk test results, right ventricular ejection fraction, echocardiography, and pulmonary hemodynamics. We compared data from group I, II, and III patients. A comparison was also made within group II between the data collected at the time of evaluation and at the time of transplantation to quantify the deterioration during the waiting time.
Results: The waiting time, spirometry, 6-minute walk test results, and right ventricular ejection fraction did not differ among the three groups. A statistically significant difference was found for PaO 2/FIO 2, PaCO 2, mean pulmonary artery pressure, cardiac index, pulmonary arterial wedge pressure, and intrapulmonary shunt between groups I and II. Groups I and III showed statistically significant differences for mean pulmonary artery pressure, PaO 2/FIO 2, and systemic vascular resistance indexed. No differences were observed between groups II and III. The comparison within group II showed a significant deterioration of pulmonary hemodynamics during the waiting time.
Conclusions: Pulmonary hemodynamics are worst in patients dying on the waiting list and deteriorate significantly during the waiting time. They may thus contribute to establish priority for lung transplantation in patients with cystic fibrosis.
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