EARLY AND LONG-TERM FUNCTIONAL OUTCOMES IN UNILATERAL, BILATERAL, AND LIVING-RELATED TRANSPLANT RECIPIENTS - 10/09/11
Résumé |
Human lung transplantation was first attempted in a 58-year-old male smoker and prison (life sentence) inmate with lung cancer, described by Hardy in 1963.20 The man was breathless on minimal exertion and thought unable to physiologically survive resection without lung transplantation. At operation, it was discovered that the cancer could not be fully resected but it was decided to continue with the left lung homotransplantation. The graft functioned adequately, with immediate improvement in arterial blood gases, but the recipient died of renal failure on day 18. From that time, more than 40 attempts at lung transplant were made; only two survived beyond 2 months (6 and 10 months). One recipient survived 10 months but spent only a few weeks out of hospital12; nevertheless, the reality of long-term graft function was well demonstrated.
In 1982, the Stanford University group56 reported the results of heart–lung transplantation (HLTx) in three patients, and two with pulmonary vascular disease achieved long-term quality survival. Many factors contributed to the group's success, including preliminary experience with the procedure in primates and the availability of the immunosuppressing agent cyclosporine A. Over the next decade, isolated lung transplantation procedures were developed and performed successfully in humans. Single lung transplantation (SLTx) was first successfully performed in 1993 by the Toronto Lung Transplant Group,72 initially in recipients with pulmonary fibrosis (PF) but subsequently for pulmonary hypertension (PH) and, more recently, for obstructive lung disease (OLD). Double lung transplantation was first performed in 198552 as an en bloc procedure with tracheal anastomosis, initially for patients with bronchiectasis (especially cystic fibrosis [CF]) and bullous emphysema.
The en bloc double lung transplant procedure carried a high rate of tracheal anastomotic breakdown, with many fatalities. In 1989, the procedure was modified to the bilateral sequential lung transplant (BLTx) procedure predominantly used for double lung replacement today. A few groups persist with en bloc double lung transplantation, with revascularization of the bronchial circulation employing the internal mammary artery.70
Live-donor lobar transplantation was first performed by Starnes et al15 in a 12-year-old girl receiving a lobar transplant from her mother for bronchopulmonary dysplasia. More recently, successful bilateral transplantation with the right lower lobe from one living donor and left lower lobe from a second living donor, has been reported by the University of Southern California group.3 Although first-degree relatives initially were used, unrelated lobar donors are now used. Patients often have CF and are deteriorating rapidly, with insufficient time to wait for a cadaveric donor. Long-term survival with good functional capacity has been reported.
Other procedures have been reported, including en bloc heart–lung–liver and bilateral lung–liver transplantation. Bilateral lobar transplantation (using left upper and lower lobes of a cadaveric donor) in combination with liver transplantation has also been reported.9 These procedures have been performed very infrequently and few outcome data exist.
Pulmonary xenotransplantation, most likely swine to human, has moved outside the realm of “science fiction” and may be a clinical reality in the next decade.
The results of lung transplantation have improved substantially in the 15-year era of successful human lung transplantation. The biggest impact seems to be on the early outcome. The development of bronchiolitis obliterative syndrome (BOS) in the allograft remains the most important determinant of long-term survival and quality of life. Lung retransplantation for BOS is becoming increasingly prevalent.
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| Address reprint requests to Trevor J. Williams, MB, BS, FRACP, Department of Respiratory Medicine, Alfred Hospital/Monash University, Commercial Road, Prahran, Melbourne, Victoria, Australia 3181 |
Vol 18 - N° 2
P. 245-257 - juin 1997 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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