5 years ago

What is the manner of gastric emptying after ingestion of liquids with differences in the volume under uniform glucose-based energy content?

We previously demonstrated that the gastric emptying rate of liquids chiefly depended on the total amount of calories (energy content) in a uniform volume. The aim of the present study was to examine the effects of different volumes of liquids with a uniform energy content on gastric emptying. Methods Three types of test solutions were prepared with a uniform amount of calories (200 kcal provided by glucose) and step-wise increments in volume (200 ml, 400 ml, and 600 ml). The gastric volume of each solution was determined by ultrasound measurements of the gastric antral cross-sectional area after their ingestion by 8 healthy volunteers. Results The mean gastric volume decreased exponentially to nearly 0 ml 70 min after ingestion in the 200 ml group, 90 min in the 400 ml group, and 100 min in the 600 ml group. Each gastric emptying curve converged with identical slopes on the graph when the points at which the gastric emptying curves of the 200 ml and 400 ml groups reached the zero point on the Y-axis (mean gastric volume) were shifted toward 110 min on the X-axis (time scale). Conclusions The volume of liquid ingested with a uniform glucose-based energy content is a critical determinant of liquid gastric emptying. The gastric emptying time may be predicted following the ingestion of an isocaloric liquid with any volume over a predefined range once a gastric emptying curve following the ingestion of a liquid has been plotted on a graph. Trial registry number UMIN000014930.

Publisher URL: www.sciencedirect.com/science

DOI: S0261561416302138

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