Correlation Between Preoperative Gastric Volume and Weight Loss After Laparoscopic Sleeve Gastrectomy

Background: The aim of the study was evaluation of the effect of the resected gastric volume (RGV) on weight loss after laparoscopic sleeve gastrectomy (LSG).Methods: This prospective study included 40 morbidly obese patients undergoing LSG. Multi Detector Computed Tomography (MDCT) was used to measure preoperative stomach volume and sleeve volume. The actual RGV was measured after surgery. The primary outcome measure was the relation between RGV and percentage of excess body weight loss (%EBWL) after 3 and 6 months. The secondary outcome was early postoperative complications.Results: The mean preoperative BMI was 43.5±4.3 kg/m2. The actual RGV was substantially correlated with that estimated by CT (r=0.996, p<0.001). The former was significantly larger with a mean deviation of 17.6 cc (95%CI: 12.2-23.0 kg). The actual and CT-estimated RGV were positively correlated with% EBWL after 3 months (r=0.361, p=0.022 and r=0.471, p<0.001, respectively) and after 6 months (r=0.466, p=0.002 and r=0.553, p<0.001, respectively). Percentage of volume reduction was positively correlated with weight reduction after 3 and 6 months (r=0.0.525, p=0.001 and r=0.564, p<0.001, respectively).Conclusions: The resected gastric volume during LSG was significantly correlated with weight reduction after 3 and 6 months of surgery. Sleeve volume was not correlated with early weight reduction. MDCT is a reliable method to measure gastric volume before and after surgery.

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Residual Gastric Volume Estimated with a New Radiological Volumetric Model: Relationship with Weight Loss After Laparoscopic Sleeve Gastrectomy

Obesity Surgery ◽

10.1007/s11695-013-1113-x ◽

2013 ◽

Vol 24 (3) ◽

pp. 359-363 ◽

Cited By ~ 39

Author(s):

Pablo Vidal ◽

José Manuel Ramón ◽

Marcos Busto ◽

Gerardo Domínguez-Vega ◽

Albert Goday ◽

...

Keyword(s):

Weight Loss ◽

Sleeve Gastrectomy ◽

Laparoscopic Sleeve Gastrectomy ◽

Gastric Volume ◽

Residual Gastric Volume ◽

Volumetric Model

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Impact of Resected Gastric Volume on Postoperative Weight Loss after Laparoscopic Sleeve Gastrectomy

Gastroenterology Research and Practice ◽

10.1155/2019/3742075 ◽

2019 ◽

Vol 2019 ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Stefano D’Ugo ◽

Vittoria Bellato ◽

Emanuela Bianciardi ◽

Paolo Gentileschi

Keyword(s):

Weight Loss ◽

Sleeve Gastrectomy ◽

Laparoscopic Sleeve Gastrectomy ◽

Potential Role ◽

Gastric Volume ◽

Specimen Size ◽

Postoperative Weight Loss ◽

The Mean

Among the bariatric surgery community, it has recently emerged the idea of a possible association between resected gastric volume (RGV) and weight loss after laparoscopic sleeve gastrectomy (LSG). If the size of the sleeve depends on the bougie caliber, the resected volume of the stomach remains something which is not possible to standardize. The aim of the study was to investigate a possible relationship between RGV and weight loss after LSG. We developed a mathematical method to calculate the RGV, based on the specimen size removed during LSG. Ninety-one patients (63 females and 28 males) affected by morbid obesity were included in the study. They underwent LSG between 2014 and 2016. Mean preoperative BMI was 45±6.4. At 1 year after LSG, the mean BMI was 30±5.3 and the EWL% was 65±20.2. The statistical analysis of RGV, BMI, and EWL% at 1-year follow-up did not find any correlation between the volume of stomach removed and the weight loss after LSG. Further studies in the future should clarify the potential role of RGV during LSG. This trial is registered with ClinicalTrials.gov NCT03938025.

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Radiographic Measurement of Gastric Remnant Volume After Laparoscopic Sleeve Gastrectomy: Assessment of Reproducibility and Correlation with Weight Loss

Obesity Surgery ◽

10.1007/s11695-021-05812-0 ◽

2021 ◽

Author(s):

Małgorzata Deręgowska-Cylke ◽

Piotr Palczewski ◽

Marcin Błaż ◽

Radosław Cylke ◽

Paweł Ziemiański ◽

...

Keyword(s):

Weight Loss ◽

Sleeve Gastrectomy ◽

Laparoscopic Sleeve Gastrectomy ◽

Significant Negative Correlation ◽

Gastric Volume ◽

Gastric Remnant ◽

Long Term Results ◽

Radiographic Measurement ◽

Mathematical Methods ◽

Restrictive Procedure

Abstract Background As a restrictive procedure, laparoscopic sleeve gastrectomy (LSG) relies primarily on the reduction of gastric volume. It has been suggested that an immediate postoperative gastric remnant volume (GRV) may influence long-term results of LSG; however, there are no consensus in this matter. The aim of this study was to assess the reproducibility of different radiographic methods of GRV calculation and evaluate their correlation with the weight loss (WL) after surgery. Methods This retrospective study evaluated 174 patients who underwent LSG in the period from 2014 to 2017. Using UGI, GRV was measured with 3 different mathematical methods by 2 radiologists. Intraobserver and interobserver calculations were made. Correlation between GRV and WL were estimated with calculations percentage of total weight loss (%TWL) and percentage of excess weight loss (%EWL) after 1, 3, 6, 12, 18, and 24 months postoperatively. Results During analysis of intraobserver similarities, the results of ICC calculation showed that reproducibility was good to excellent for all GRV calculation methods. The intraobserver reproducibility for Reader I was highest for cylinder and truncated cone formula and for Reader II for ellipsoid formula. The interobserver reproducibility was highest for ellipsoid formula. Regarding correlation between GRV and WL, significant negative correlation has been shown on the 12th month after LSG in %TWL and %EWL for every method of GRV calculation, most important for ellipsoid formula (%TWL – r(X,Y) = -0.335, p < 0.001 and %EWL – r(X,Y) = -0.373, p < 0.001). Conclusion Radiographic methods of GRV calculation are characterized by good reproducibility and correlate with the postoperative WL. Graphical Abstract

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