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ELBASAN, ONUR

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20202
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Subject: bariatric surgery ×

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    PublicationOpen Access
    Serum 25(OH) Vitamin D Levels in Severely Obese Patients Evaluated Before Bariatric Surgery
    (TURKIYE KLINIKLERI, 2020) YAVUZ, DİLEK; Gunhan, Hatice Gizem; Uygur, Meliha Melin; Imre, Eren; Elbasan, Onur; Gogas Yavuz, Dilek
    Objective: Obesity is a risk factor for vitamin D deficiency, which is reported to be detected differently in each population. This study aimed to evaluate the 25(OH) vitamin D (25(OH)D) levels, intact parathormone (iPTH) levels, and their relationship with body mass index (BMI) in obese patients, screened prior to bariatric surgery. Material and Methods: This retrospective study comprised of 1.082 obese patients (41 +/- 10 years, female/male: 823/259) who were candidates for bariatric surgery. BMI, waist circumference (WC), serum 25(OH)D, iPTH, calcium, phosphorus values of these patients were recorded from patient files. Results: BMI, WC, iPTH, and 25(OH)D levels were 48 +/- 8.9 kg/m(2), 128 +/- 11.9 cm, 64 +/- 36 pg/mL, and 15 +/- 18 ng/mL, respectively. Mean 25(OH)D level of 79.1% of the patients belonged to the deficiency range. Very low 25(OH) vitamin D levels (<10 ng/mL) were witnessed among 40.9% (443/1.082) of the study group. Female obese subjects possessed significantly lower serum 25(OH)D levels as compared to male obese patients. Significant negative correlations were perceived between 25(OH)D levels and iPTH (r=-0.34, p<0.0001), BMI (r=-0.20, p<0.0001), and waist circumferences (r=-0.14, p=0.002) in the whole group. Multivariate analysis indicated that BMI to be an independent risk factor for vitamin D deficiency. Conclusion: A high rate of vitamin D deficiency was documented in our morbidly obese patients who were candidates for bariatric surgery. BMI is a determinant of 25(OH)D levels. It is essential to screen for vitamin D deficiency and possible osteomalacia among the candidates for bariatric surgery of obese patients and should be treated appropriately before bariatric surgery.
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    Comparison Between Sleeve Gastrectomy and Exenatide on Type 2 Diabetic Patients
    (MARY ANN LIEBERT, INC, 2020) ELBASAN, ONUR; Elbasan, Onur; Sisman, Pinar; Peynirci, Hande; Yabaci, Aysegul; Ersoy, Canan
    Background: Diabetes and obesity are major causes of mortality and morbidity that are increasing all over the world. As obesity is a major risk factor for type 2 diabetic patients, weight loss is important in the treatment of type 2 diabetic patients. In our study, our aim was to evaluate the effects of exenatide and laparoscopic sleeve gastrectomy (LSG) in obese type 2 diabetic patients on the clinical and laboratory parameters. Methods: Twenty-five LSG and 25 exenatide patients followed up in our outpatient clinic were involved in the study. Results: At the end of the 6-month follow-up, weight loss was similar to 35.4 kg in the surgery group and 11.5 kg in the exenatide group. Although postprandial glucose and hemoglobin A1c were significantly decreased in both groups, the decrease was significantly higher in LSG group compared to the exenatide group. Although there was no significant change in fasting blood glucose (FBG) in the exenatide group, there was a significant decrease in FBG in LSG group. Conclusion: LSG is a method that should be performed up on indication and much more radical compared to exenatide administration, but appears to be a more efficient application that corrects diabetes- and obesity-related metabolic parameters compared to exenatide therapy in type 2 diabetic obese patients.