Abstract：
BACKGROUND:Abnormal glucose profiles have been described after Roux-en-Y gastric bypass (RYGB) with intense postprandial hyperglycemic peaks in some but not all the patients. The underlying mechanisms of these anomalies are not totally understood. OBJECTIVE:The aim of this study is to determine whether or not the composition of the meal impacts the existence and maximum interstitial glucose (IG) concentration, measured under real-life conditions. DESIGN:Retrospective cohort. SETTING:Referral bariatric surgery left. METHODS:Continuous glucose monitoring (CGM) and meal composition were recorded for at least 3 days on an outpatient basis in 56 patients after RYGB. The presence of postprandial peaks defined by IG above 140 mg/dl, the maximum postprandial IG, the carbohydrate content, and the glycemic load of the meals were analyzed. RESULTS:Thirty-two patients had a hyperglycemic peak (PEAK), and 24 did not (NO PEAK). The average max IG was 159.6 ± 33.0 mg/dl in PEAK individuals and 111.8 ± 13.0 mg/dl in NO PEAK. Age was significantly higher in PEAK, but no other parameter was different between the two groups, including meal composition. In the PEAK patients, in multivariate analyses, carbohydrate content in model one and glucose load in model two explained respectively 50 and 26 % of maximum IG variance. For each gram of ingested carbohydrates, interstitial glucose increased by 1.68 mg/dl. CONCLUSIONS:Following a gastric bypass, under real-life conditions, irrespective of the carbohydrate content of the meal, some patients develop postprandial hyperglycemic peaks, whereas others do not. In patients with postprandial hyperglycemic peaks, the maximum IG depends on the carbohydrate content of the meal.
journal_name
Obes Surgjournal_title
Obesity surgeryauthors
Tramunt B,Vaurs C,Lijeron J,Guillaume E,Ritz P,Diméglio C,Hanaire Hdoi
10.1007/s11695-015-1930-1subject
Has Abstractpub_date
2016-07-01 00:00:00pages
1487-92issue
7eissn
0960-8923issn
1708-0428pii
10.1007/s11695-015-1930-1journal_volume
26pub_type
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