Ultrasonic evaluation of gastric clearing in young infants

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Abstract
Gastric emptying was determined using ultrasound in young infants. Gastric volume was calculated from anteroposterior, craniocaudal and laterolateral antral diameters. There was a linear decline of the logarithm of a gastric filling index over time in normal subjects. The mean clearing angle in normal subjects was 52° (range 45–59). Examples of significantly different clearing rates could be demonstrated in a variety of clinical conditions. In several subjects gastric emptying rate was not exponential. Ultrasound seems very promising for the study of gastric emptying, especially in young children.