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Ann Thorac Surg 1995;60:38-44
© 1995 The Society of Thoracic Surgeons

Pulmonary Function After Non–Heart-Beating Lung Donation in a Survival Model

Scott A. Buchanan, MD, Nuno F. DeLima, MD, Oliver A. R. Binns, MD, Michael C. Mauney, MD, Jeffrey T. Cope, MD, Scott E. Langenburg, MD, Kim S. Shockey, MS, Joe D. Bianchi, MD, Vikas I. Parekh, BS, Curtis G. Tribble, MD, Irving L. Kron, MD

Thoracic and Cardiovascular Research Laboratory, Department of Surgery, University of Virginia Health Sciences Center, Charlottesville, Virginia

Background. Lung procurement from recently deceased cadavers has been suggested to enlarge the limited donor pool. We hypothesized that lungs harvested from non–heart-beating donors (NHBD) would function as well as those harvested from heart-beating donors.

Methods. Sixteen adult swine underwent left lung allotransplantation. Controls received lungs procured from heart-beating donors, NHBD pigs received lungs immediately harvested from donors after death from asphyxiation, and NHBD-15 and NHBD-30 pigs received lungs harvested after 15 and 30 minutes after asphyxiation.

Results. After 1 week of survival, mean dynamic airway compliance (mL/cm H2O ± standard error of the mean) was 16.3 ± 0.7 in controls, and 17.3 ± 1.0, 16.4 ± 6.0, and 7.3 ± 1.6 in the NHBD, NHBD-15, and NHBD-30 groups, respectively (p = 0.02, NHBD-30 versus others combined). No significant differences were noted in the pulmonary venous partial pressure of oxygen or pulmonary vascular hemodynamics compared with controls.

Conclusions. The decrease in airway compliance noted in the NHBD-30 group may reflect an exacerbation of reperfusion injury caused by 30 minutes of warm ischemia during organ retrieval. We conclude that posttransplantation lung function using an NHBD with up to 15 minutes of warm ischemia is equivalent to lung function after heart-beating harvest.


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Discussion
Ann. Thorac. Surg. 1995 60: 44-46. [Extract] [Full Text]



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