Effects of Gelatinization of Enteral Nutrients on Human Gastric Emptying

Naruo Kawasaki, Mitsuyoshi Urashima, Hironori Odaira, Takuji Noro, Yutaka Suzuki

Abstract


Background: Gastrointestinal side effects, particularly diarrhea, are still the main reasons for discontinuation of enteral nutrition. Gelatinization of liquid meal for the prevention of diarrhea has been reported as effective. The purpose of this study was to investigate the effects of gelatinization of liquid meal on gastric emptying.

Methods: Ten healthy volunteers were studied two times, with 2-week interval between tests. The total calorific value was set at 225 kcal, and 3 test meals were prepared: liquid meal and 2 types of gelatinized meals. These 2 types of gelatinized meals are different viscosity. 13C-sodium acetate (100 mg) was thoroughly mixed, and exhaled air was sampled. The results of gastric emptying were expressed as the time of peak excretion (Tmax), and absorption was expressed as the area under the 13CO2 curve up to Tmax (AUC-Tmax). At the same time, blood samples were collected to measure levels of blood glucose, insulin and gastrin.

Results: The mean value of Tmax were 52.0, 77.3 and 85.6 min. Compared to liquid meal, gastric emptying for gelatinized meals was significantly delayed. The mean value of AUC-Tmax were 22.7, 28.7 and 33.7%dose, respectively, and no significant differences in absorption were seen. No significant differences existed in blood glucose, gastrin and insulin.

Conclusions: Gelatinization of liquid meal delays gastric emptying. Gelatinized liquid meal may be useful for the management of diarrhea accompanied with enteral nutrition without influencing gastrointestinal hormone and blood glucose.


doi:10.4021/gr2010.06.213w


Keywords


Gelatinization; Gastric emptying; Absorption; 13C breath test; Enteral nutrition

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