ArticleObesity surgery2025
Unraveling the Enigma of Post-sleeve Differential Liquid Tolerance: A Time-Resolved MRI Study.
Article in Obesity surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLaparoscopic sleeve gastrectomy is one of the restrictive bariatric procedures that often impair food and fluid tolerance and negatively impact quality of life as it affects patients' weight loss, hospital stay, and lifestyle.
aimThe objective of this study was to evaluate water and juice tolerance after LSG using dynamic magnetic resonance imaging (MRI) of the stomach to determine the relationship between fluid tolerance and gastric motility.
methodsThe prospective cohort study enrolled 17 adult subjects of both sexes, with a body mass index (BMI) greater than 40 kg/m
resultsMore than half of participants (58.8%) reported difficulty tolerating water, while 5.9% of participants expressed early difficulty tolerating juice. After six months, water tolerance improved significantly. Compared to early dynamic MRI, late MRI gastric motility patterns revealed an improvement trend in the form of a significant decrease in antral frequency and an increase in antral velocity, sleeve transit, and contraction height for both water and juice (p < 0.001). Among patients with improved water tolerance (6 patients), late MRI findings were significantly improved compared to their early MRI findings (p < 0.001). Patients' early wave contraction height was significantly different between water and juice at early and late imaging (p < 0.001).
conclusionTime-resolved gastric MRI is a useful tool to explain the roots of post-LSG differential liquid tolerance. The gastric antrum is the only coordinated and functionally motile part of the gastric sleeve. An overall significantly improved motility pattern trend was achieved by the end of the study, with the increase in antral contraction height being the most consistent component of that trend. Water tolerance improves significantly 6 months after LSG but remains worse than juice tolerance.
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