TY - JOUR A1 - Scheuing, Nicole A1 - Holl, Reinhard W. A1 - Dockter, Gerd A1 - Hermann, Julia M. A1 - Junge, Sibylle A1 - Koerner-Rettberg, Cordula A1 - Nährlich, Lutz A1 - Smaczny, Christina A1 - Staab, Doris A1 - Thalhammer, Gabriela A1 - Koningsbruggen-Rietschel, Silke van A1 - Ballmann, Manfred T1 - High variability in oral glucose tolerance among 1,128 patients with cystic fibrosis : a multicenter screening study T2 - PLoS One N2 - Background: In cystic fibrosis, highly variable glucose tolerance is suspected. However, no study provided within-patient coefficients of variation. The main objective of this short report was to evaluate within-patient variability of oral glucose tolerance. Methods: In total, 4,643 standardized oral glucose tolerance tests of 1,128 cystic fibrosis patients (median age at first test: 15.5 [11.5; 21.5] years, 48.8% females) were studied. Patients included were clinically stable, non-pregnant, and had at least two oral glucose tolerance tests, with no prior lung transplantation or systemic steroid therapy. Transition frequency from any one test to the subsequent test was analyzed and within-patient coefficients of variation were calculated for fasting and two hour blood glucose values. All statistical analysis was implemented with SAS 9.4. Results: A diabetic glucose tolerance was confirmed in 41.2% by the subsequent test. A regression to normal glucose tolerance at the subsequent test was observed in 21.7% and to impaired fasting glucose, impaired glucose tolerance or both in 15.2%, 12.0% or 9.9%. The average within-patient coefficient of variation for fasting blood glucose was 11.1% and for two hour blood glucose 25.3%. Conclusion: In the cystic fibrosis patients studied, a highly variable glucose tolerance was observed. Compared to the general population, variability of two hour blood glucose was 1.5 to 1.8-fold higher. Y1 - 2014 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/35338 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-353382 SN - 1932-6203 N1 - Copyright: © 2014 Scheuing et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. VL - 9 IS - (11):e112578 PB - PLoS CY - Lawrence, Kan. ER -