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Ann Thorac Surg 2005;79:418-425
© 2005 The Society of Thoracic Surgeons

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Original article: General thoracic

Long-term Pulmonary Function After Living-Donor Lobar Lung Transplantation in Adults

Department of Cardiothoracic Surgery, University of Southern California Keck School of Medicine, Los Angeles, California

Accepted for publication July 6, 2004.

^* Address reprint requests to Dr Barr, Department of Cardiothoracic Surgery, University of Southern California Keck School of Medicine, 1520 San Pablo St, Suite 4300, Los Angeles, CA 90033 (E-mail: mbarr{at}surgery.usc.edu).

BACKGROUND: Living-donor lobar lung transplantation was developed as an alternative to cadaveric transplantation. However, whether two pulmonary lobes provide comparable intermediate and long-term pulmonary function to full-sized bilateral cadaveric grafts in adults is unknown.

METHODS: An analysis of the pulmonary functions of 59 bilateral lobar and 43 bilateral cadaveric adult lung transplant recipients who survived more than 3 months after transplantation was performed.

RESULTS: Mean follow-up was 3.8 ± 2.8 years. In lobar recipients, mean percent predicted forced vital capacity and forced expiratory volume in 1 second improved between 1 and 6 months after transplantation (42.5% ± 13.4% and 46.9% ± 14.0% at 1 month versus 63.6% ± 14.1% and 64.5% ± 13.7% at 6 months; p < 0.001 and <0.001, respectively). In cadaveric recipients, mean percent predicted forced vital capacity improved after transplantation (54.3% ± 14.5% at 1 month versus 74.2% ± 21.3% at 12 months; p < 0.01). As compared with the cadaveric group, mean percent predicted forced vital capacity and forced expiratory volume in 1 second were lower 1 and 3 months after transplantation in the lobar recipients (p = 0.001 at both times); however, by 6 months after transplantation, these values were comparable and remained so throughout the follow-up period. In a subset of lobar and cadaveric recipients, maximal exercise, heart rate, peak oxygen consumption, anaerobic oxygen consumption threshold, and ability to maintain oxygen saturation were also comparable.

CONCLUSIONS: In those adult recipients surviving more than 3 months after transplantation, lobar lung transplantation provides comparable intermediate and long-term pulmonary function and exercise capacity to bilateral cadaveric lung transplantation.

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