Impact of Donor Arterial Partial Pressure of Oxygen on Outcomes After Lung Transplantation in Adult Cystic Fibrosis Recipients

Don Hayes, Benjamin T. Kopp, Stephen E. Kirkby, Susan D. Reynolds, Heidi M. Mansour, Joseph D. Tobias, Dmitry Tumin

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Introduction: Donor PaO2 levels are used for assessing organs for lung transplantation (LTx), but survival implications of PaO2 levels in adult cystic fibrosis (CF) patients receiving LTx are unclear. Methods: UNOS registry data spanning 2005–2013 were used to test for associations of donor PaO2 with patient survival and bronchiolitis obliterans syndrome (BOS) in adult (age ≥ 18 years) first-time LTx recipients diagnosed with CF. Results: The analysis included 1587 patients, of whom 1420 had complete data for multivariable Cox models. No statistically significant differences among donor PaO2 categories of ≤200, 201–300, 301–400, or >400 mmHg were found in univariate survival analysis (log-rank test p = 0.290). BOS onset did not significantly differ across donor PaO2 categories (Chi-square p = 0.480). Multivariable Cox models of patient survival supported the lack of difference across donor PaO2 categories. Interaction analysis found a modest difference in survival between the two top categories of donor PaO2 when examining patients with body mass index (BMI) in the lowest decile (≤16.5 kg/m2). Conclusions: Donor PaO2 was not associated with survival or BOS onset in adult CF patients undergoing LTx. Notwithstanding statistically significant interactions between donor PaO2 and BMI, there was no evidence of post-LTx survival risk associated with donor PaO2 below conventional thresholds in any subgroup of adults with CF.

Original languageEnglish (US)
Pages (from-to)547-553
Number of pages7
JournalLung
Volume194
Issue number4
DOIs
StatePublished - Aug 1 2016

Keywords

  • Bronchiolitis obliterans syndrome
  • Cystic fibrosis
  • Donor
  • Lung transplantation
  • Partial pressure of oxygen
  • Survival

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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