Abstract
Introduction
Hypoglycemia is a known adverse event following gastric bypass. The incidence of hypoglycemia after laparoscopic sleeve gastrectomy (LSG) is still under investigation. The aim of our study was to verify the presence of oral glucose tolerance test (OGTT)-related hypoglycemia after LSG and to identify any baseline predictors of its occurrence.
Methods
We analyzed 197 consecutive non-diabetic morbid obese patients that underwent LSG. All patients were studied before and 12 months after LSG. Evaluation included anthropometric parameters, 3-h OGTT for blood glucose (BG), insulin and c-peptide, lipid profile, interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), highly sensitive C-reactive protein (hsCRP), and leptin. Hypoglycemia was defined as BG ≤ 2.7 mmol/l.
Results
After surgery, 180 patients completed the OGTT. Eleven patients did not complete the test for gastric intolerance, and in six patients, the test was stopped earlier for the onset of severe symptomatic hypoglycemia. Of the patients, 61/186 (32.8%) had at least one OGTT-related hypoglycemia. The highest frequency of hypoglycemic events occurred 150′ after glucose load (20.2%). At baseline, patients with hypoglycemic events after surgery (Hypo) were younger (40 ± 11 vs 46 ± 10 years; p < 0.001), less obese (BMI 46 ± 5.7 vs 48.4 ± 7.9 kg/m2; p < 0.05), and had a worse lipid profile as compared to patients without hypoglycemic events (N-Hypo). Moreover, after LSG, Hypo patients compared with N-Hypo presented a higher weight loss (%EBMIL 80 ± 20 vs 62 ± 21%; p < 0.001). Low age, low fasting glucose, and high triglyceride levels before LSG were independent predictors of hypoglycemia development after surgery (r 2 = 0.131).
Conclusion
These findings confirm the high incidence of post-prandial hypoglycemia 1 year after LSG. Hypoglycemia is more frequent in younger patients with lower fasting glucose and higher triglyceride levels before surgery.
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Contributions
Authors’ initials: AB, MS, RS, RF, CDP, SC, PF, LP, MF, RV, and LB.
AB: Study design, data analysis, and writing up of the first draft of the paper.
MS, RS, RF, CDP, SC, and PF: Patient’s recruitment and data collection.
LP and MF: Patient’s recruitment and bariatric procedures.
RV: Study design and review/edit the manuscript.
LB: Study design, data analysis, writing up of the first draft of the paper, and review/edit the manuscript.
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Conflict of Interest
Luca Busetto reports receiving personal fees as scientific consultant from Novo Nordisk and Intrapace. None of other authors report conflict of interest.
Ethical Approval
The study was approved by the Research Ethic Committee of the Padua University Hospital (protocol number 2892).
Informed Consent
Written informed consent was obtained for each individual participant to the study.
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Belligoli, A., Sanna, M., Serra, R. et al. Incidence and Predictors of Hypoglycemia 1 Year After Laparoscopic Sleeve Gastrectomy. OBES SURG 27, 3179–3186 (2017). https://doi.org/10.1007/s11695-017-2742-2
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DOI: https://doi.org/10.1007/s11695-017-2742-2