Intussusception: clinical and radiographic factors influencing reducibility

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Abstract
Hydrostatic reduction of intussusception by barium or air enema has been widely accepted. The five-year experience with this procedure at two children's hopsitals is reviewed and the results compared to previous studies. Various clinical and radiographic factors are evaluated in relation to the reduction rate. The findings show that the more distal the intussusception is encountered, the lower the rate of reduction. However, 25% are reduced within the rectum with no evidence of increased complications. Small bowel obstruction and prolonged duration of signs and symptoms decreased the rate of reduction statistically but there is no significant increase in complication rate in those attempted, contrary to a previous report. The cresent sign (dissection sign) and age of the patient are not significant factors in reduction as reported by other studies.

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