Roux-en-Y gastric bypass (RYGB) leads to weight reduction but has also some unwanted side effects. A part of this population will develop postprandial reactive hypoglycemia (PPRH). At this moment no validated diagnostic tool exists for PPRH. The aim of this study is to prove an association between the SigstadĀ“s Score and the lowest postprandial glucose level in patients after RYGB surgery. This is investigated using a liquid mixed meal tolerance test (LMMTT). As a secondary hypothesis, associations between Edinburgh Hypoglycemia Scale (EHS) and postprandial glucose levels are investigated. Furthermore, changes of insulin and GLP-1 levels during the test are analysed. Patient characteristics including co-morbidities are studied as possible influencing parameters. Moreover, a healthy control group is included to validate the results. Finally, a flowchart/diagnostic method will be proposed for diagnosing patients who had a RYBG surgery with symptoms suggestive of PPRH. Besides the LMMTT, participants at the Ghent University Hospital will undergo additional tests such as a solid mixed meal tolerance test (SMMTT) and continuous glucose monitoring (CGM). Associations between Sigstad Score, EHS and the lowest glucose measured during CGM and SMMTT will be investigated and compared to the results of the LMMTT.
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Association between Sigstad's score and the lowest postprandial glucose levels
Timeframe: end 2018