Evaluation of liquid ingestion after bariatric surgery

Roberto Oliveira Dantas; Leda Maria Tavares Alves; Rachel de Aguiar Cassiani; Carla Manfredi dos Santos

Arq. Gastroenterol. vol.48 no.1 São Paulo Jan./Mar. 2011

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.

Headings: Drinking. Bariatric surgery. Obesity.

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Sobre Graziela Chamarelli Bougo

Fonoaudióloga do Hospital Risoleta Tolentino Neves Graduada em Fonoaudiologia pela Universidade Estadual do Centro-Oeste-PR Aprimoramento em Fonoaudiologia Hospitalar pelo Hospital de Base da Faculdade de Medicina de São José do Rio Preto (FAMERP/SP) Residência em Fonoaudiologia na área de ênfase de Urgência, Emergência e Terapia Intensiva do Hospital Municipal Odilon Behrens de Belo Horizonte (BH/MG)

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