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Arquivos de Gastroenterologia

versão impressa ISSN 0004-2803

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DANTAS, Roberto Oliveira; ALVES, Leda Maria Tavares; CASSIANI, Rachel de Aguiar  e  SANTOS, Carla Manfredi dos. Evaluation of liquid ingestion after bariatric surgery. Arq. Gastroenterol. [online]. 2011, vol.48, n.1, pp.15-18. ISSN 0004-2803.  https://doi.org/10.1590/S0004-28032011000100004.

CONTEXT: Bariatric surgery is an effective treatment for obesity; however, after surgery the patient may have difficulty in swallowing liquid and solid foods. OBJECTIVES: To evaluate liquid ingestion in patients who had undergone bariatric surgery. METHOD: We studied 43 volunteers with normal body mass index (BMI) (BMI: 18.5-24.9 kg/m2), 55 subjects with class III obesity (BMI: >40.0 kg/m2), and 48 subjects with bariatric surgery for treatment of class III obesity. The method chosen for evaluation was the water swallowing test. The subjects drank in triplicate 50 mL of water while being precisely timed and the number of swallows were counted. RESULTS: There was no difference between subjects with normal BMI and subjects with class III obesity. During the first 2 months after bariatric surgery the patients showed an increase in the time needed to drink the entire volume, in the number of swallows, and in the inter-swallow interval, and a decrease in the volume swallowing capacity (volume/swallowing) and swallowing flow rate (volume swallowed/second). After 2 months, the results of the swallowing measurements moved in the direction of normal values. CONCLUSION: Bariatric surgery may cause more intense alterations of liquid bolus swallowing within 2 months after the procedure, which moved to normal values after this time.

Palavras-chave : Drinking; Bariatric surgery; Obesity.

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