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23.07.2020 | Original Contributions | Ausgabe 11/2020

Obesity Surgery 11/2020

The Short-Term Renal Effects of Bariatric Surgery: A Comparative Study Between Sleeve Gastrectomy and One Anastomosis Gastric Bypass Operations Among Egyptian Patients With Severe Obesity

Zeitschrift:
Obesity Surgery > Ausgabe 11/2020
Autoren:
Amir I. Bassiony, Alaa Sabry, Osama Shiha, Ahmed ElGeidie, Mohammed K. Nassar
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Abstract

Purpose

Obesity is a major health problem with many renal sequelae. Bariatric surgery (BS) has become the treatment of choice for severe obesity. This study was conducted to assess the short-term renal effects of BS and to compare such effects between two distinct forms of BS.

Materials and Methods

A single-center non-randomized prospective observational study was conducted on 57 patients with severe obesity. Two distinct forms of BS have been performed; laparoscopic sleeve gastrectomy (LSG) and laparoscopic one anastomosis gastric bypass (OAGB). Anthropometric measurements, 24-h urinary creatinine clearance (CLCr), protein and oxalate excretion, and abdominal fat tissue analysis by computerized tomography were performed prior to surgery and 6 months later.

Results

LSG and OAGB were performed in 47 and 10 participants, respectively. BS resulted in pronounced reduction of body mass index (− 27.1% ± 7.11), with no substantial weight loss discrepancy between LSG and OAGB. The median percent change in 24-h urinary CLCr and protein and oxalate excretion were − 35.7, − 42.2, and − 5.8, respectively. The median (IQR) percent change of urinary oxalate excretion was − 11.1 (− 22.6, − 1.4) and 113.08 (82.5, 179.7) for LSG and OAGB, respectively (p < 0.001). The subcutaneous abdominal fat surface area has been found to be the significant predictor of the persistence of glomerular hyperfiltration after BS.

Conclusion

Both LSG and OAGB can alleviate many of the obesity-related pathological renal changes. However, postoperative hyperoxaluria remains a serious issue particularly in OAGB. Detailed radiological abdominal fat tissue analysis by CT may aid in predicting the renal outcome following BS.

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