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© 2014 John Wiley & Sons A/S. Graft survival after pancreas transplantation alone (PTA) is significantly poorer than graft survival after simultaneous pancreas kidney (SPK) and is particularly affected by difficulty in monitoring rejection. Exocrine bladder drainage allows assessment of pancreas graft function as urinary amylase (UA). However, standards for UA collection and interpretation are not well defined. In this study, 21 bladder-drained PTA recipients were monitored with daily values for UA and urine creatinine (Creat) concentration from post-transplant 10-mL samples and 24-h collections. Clinical events were documented and correlated to UA measurements. UA values were found to increase post-transplant until day 15, and large interpatient variability was noted (median 12676IU/L, range 668-60369IU/L). A strong correlation was found total 24-h UA production and spot UA/Creat ratio (r=0.80, p<0.001). UA/Creat ratio showed less variation during episodes of impaired renal function; therefore, urinary amylase baseline was defined as the median UA/Creat ratio after day 15. A>25% decrease of UA predicted 9/13 (69%) events. We conclude that individual baselines should be set once the values have stabilized after 15d post-transplant and that spot UA/Creat measures are reliable, patient friendly and indicate potential events after PTA.

Original publication

DOI

10.1111/ctr.12416

Type

Journal article

Journal

Clinical Transplantation

Publication Date

01/01/2014

Volume

28

Pages

1047 - 1053