Multiorgan transplant program in a nonacademic center: organizational structure and outcomes.

Given the complexity of solid organ transplantation, it is reasonable to believe that numerous factors are at play in achieving the enviable outcomes reported. The aim of this study is to examine the role of an organizational structure in maintaining the outcomes of a multiorgan transplant program at a nonacademic center. A retrospective analysis of 2378 solid organ transplants at Nazih Zuhdi Transplant Institute between March 1985 and December 2008 was performed. The 1-year and 3-year patient and graft survival rates, rate of retransplantation, and median length of hospital stay were compared with US national data released by the Scientific Registry of Transplant Recipients in January 2009. The 1-year patient survival rates were 87.5% for heart, 95.1% for kidney, 75.8% for lung, 89.6% for liver, and 100.0% for pancreas. The 3-year patient survival rates were 73.5% for heart, 89.7% for kidney, 57.8% for lung, 87.7% for liver, and 100.0% for pancreas. A well-structured transplant program along with competent medical, administrative, and ancillary support can achieve comparable patient and graft survival rates independent of volume.

Assessing relative risks of infection and rejection: a meta-analysis using an immune function assay.

BACKGROUND: Long-term use of immunosuppressants is associated with significant morbidity and mortality in transplant recipients. A simple whole blood assay that has U.S. Food and Drug Administration clearance directly assesses the net state of immune function of allograft recipients for better individualization of therapy. A meta-analysis of 504 solid organ transplant recipients (heart, kidney, kidney-pancreas, liver and small bowel) from 10 U.S. centers was performed using the Cylex ImmuKnow assay. METHODS: Blood samples were taken from recipients at various times posttransplant and compared with clinical course (stable, rejection, infection). In this analysis, 39 biopsy-proven cellular rejections and 66 diagnosed infections occurred. Odds ratios of infection or rejection were calculated based on measured immune response values. RESULTS: A recipient with an immune response value of 25 ng/ml adenosine triphosphate (ATP) was 12 times (95% confidence of 4 to 36) more likely to develop an infection than a recipient with a stronger immune response. Similarly, a recipient with an immune response of 700 ng/ml ATP was 30 times (95% confidence of 8 to 112) more likely to develop a cellular rejection than a recipient with a lower immune response value. Of note is the intersection of odds ratio curves for infection and rejection in the moderate immune response zone (280 ng/ml ATP). This intersection of risk curves provides an immunological target of immune function for solid organ recipients. CONCLUSION: These data show that the Cylex ImmuKnow assay has a high negative predictive value and provides a target immunological response zone for minimizing risk and managing patients to stability.