• J. Thorac. Cardiovasc. Surg. · Aug 1997

    Risk factors for the development of bronchiolitis obliterans syndrome after lung transplantation.

    • T J Kroshus, V R Kshettry, K Savik, R John, M I Hertz, and R M Bolman.
    • Department of Surgery, University of Minnesota, Minneapolis 55455, USA.
    • J. Thorac. Cardiovasc. Surg. 1997 Aug 1; 114 (2): 195-202.

    ObjectiveThis study identifies specific clinical and immunologic factors in lung transplant recipients that influence the subsequent development of chronic allograft dysfunction.MethodsThe study group consisted of 132 consecutive patients who received lung allografts (76 single, 25 bilateral single, and 31 heart-lung) and survived at least 90 days. One hundred twenty-one patients were used in the analysis that modeled time to development of histologic obliterative bronchiolitis or bronchiolitis obliterans syndrome.ResultsVariables noted to have an effect on the time to development of bronchiolitis obliterans syndrome included cytomegalovirus pneumonitis (RR = 3.2, p = 0.001), late acute rejection (RR = 1.3, p = 0.02), human leukocyte antigen mismatches at the A loci (RR = 1.8, p = 0.02), total human leukocyte antigen mismatches (RR = 1.4, p = 0.04), and absence of donor antigen-specific hyporeactivity (52% vs 100% survival free from bronchiolitis obliterans syndrome at 2 years; p = 0.005). Cytomegalovirus pneumonitis had a significant effect on time to obliterative bronchiolitis (RR = 3.6, p = 0.0005), as did donor antigen-specific hyporeactivity (52% vs 100% survival free from obliterative bronchiolitis at 2 years; p = 0.01). In multivariate analysis, cytomegalovirus pneumonitis (RR = 3.2, p = 0.02), human leukocyte antigen mismatches at the A loci (RR = 2.4, p = 0.006), and late acute rejection (RR = 1.3, p = 0.02) were identified as predictors of bronchiolitis obliterans syndrome. Cytomegalovirus pneumonitis was associated with time to development of histologic obliterative bronchiolitis (RR = 2.3, p = 0.02).ConclusionsSeveral risk factors were associated with the development of chronic allograft dysfunction, which, in turn, had a significant impact on long-term survival. Early identification of lung allograft recipients with risk factors for the development of bronchiolitis obliterans syndrome may allow modification in immunosuppression and antiviral therapy to potentially decrease the prevalence of this disorder.

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