Comparative study between sleeve gastrectomy and gastric bypass regarding postoperative hyperparathyroidism

Document Type : Original Article

Authors

Department of General Surgery, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt

Abstract

Gastric Bypass(RYGB).
Aim: To illustrate the effect of bariatric surgery on serum calcium levels and serum vitamin D (vit D) levels, demonstrate
the secondary hyperparathyroidism in patients undergoing bariatric surgeries, and compare between the outcome of
RYGB and LSG regarding secondary hyperparathyroidism.
Patients and Methods: This prospective cross-sectional cohort study was conducted on 100 obese patients divided into
two groups: group I: 50 patients who underwent LSG and group II: 50 patients who underwent RYGB at General Surgery
Department, Faculty of Medicine, Beni-Suef University Hospital during the period between January 2019 and March
2022.
Results: Regarding blood calcium level, LSG group elaborated less proportion of patients with low blood calcium levels,
compared with RYGB group, after 6 months and after 1 year (P<0.05). In the LSG group the mean±SD preoperative
vit. D was 14.01±6.39, after 6 months was 18.05±3.20 and after 1 year was 22.07±2.03. In RYGB group the mean±SD
preoperative vit. D was 14.05±6.13, after 6 months was 17.04±5.1 and after 1 year was 18.02±4.6.
Conclusion: The prevalence of secondary hyperparathyroidism is high in morbidly obese patients before bariatric surgery
which is related to vit D deficiency and calcium deficiency. This prevalence increased continually along with the time
after both LSG and RYGB surgery and more apparent after RYGB.

Keywords

The Egyptian Journal of Surgery
Volume 43, Issue 4
October 2024
Pages 1156-1162

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