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- W2955250424 abstract "Objective Roux-en-Y gastric bypass (RYGB) is an effective way to induce sustainable weight loss and can be complicated by postprandial hyperinsulinaemic hypoglycaemia (PHH). To study the prevalence and the mechanisms behind the occurrence of hypoglycaemia after a mixed meal tolerance test (MMTT) in patients with primary RYGB. Design This is a cross-sectional study of patients 4 years after primary RYGB. Methods From a total population of 550 patients, a random sample of 44 patients completed the total test procedures. A standardized mixed meal was used as stimulus. Venous blood samples were collected at baseline, every 10 min during the first half hour and every 30 min until 210 min after the start. Symptoms were assessed by questionnaires. Hypoglycaemia is defined as a blood glucose level below 3.3 mmol/L. Results The prevalence of postprandial hypoglycaemia was 48% and was asymptomatic in all patients. Development of hypoglycaemia was more frequent in patients with lower weight at surgery ( P = 0.045), with higher weight loss after surgery ( P = 0.011), and with higher insulin sensitivity calculated by the homeostasis model assessment indexes (HOMA2-IR, P = 0.014) and enhanced beta cell function (insulinogenic index at 20 min, P = 0.001). Conclusion In a randomly selected population 4 years after primary RYGB surgery, 48% of patients developed a hypoglycaemic event during an MMTT without symptoms, suggesting the presence of hypoglycaemia unawareness in these patients. The findings in this study suggest that the pathophysiology of PHH is multifactorial." @default.
- W2955250424 created "2019-07-12" @default.
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- W2955250424 date "2019-07-01" @default.
- W2955250424 modified "2023-10-13" @default.
- W2955250424 title "Prevalence of hypoglycaemia in a random population after Roux-en-Y gastric bypass after a meal test" @default.
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- W2955250424 doi "https://doi.org/10.1530/ec-19-0268" @default.
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