Design and Clinical Application of Safe Air-Pressure Reduction System for Intussusception

Lim, Dong Hoon; Lim, Woo Young; Kim, Joon Young; Park, Joon Gyoon; Kim, Eun Kyong; Pyon, Choo Nam; Kim, Young Chul; Oh, Jae Hee

Abstract

PURPOSE: This study was performed to design a safe air-pressure reduction system which can absorb rapidlyrising intraluminal pressure during intussusception, and comparison with other reduction systems to test itsclinical availability.
MATERIALS AND METHODS
The air-pressure reduction system consisted of a pressure gauge,air insufflators, a pressure controller, buffers, and rapid exhaustion devices, and to determine itsabsorbability, it was connected with a bowel model. By using it in 20 infants with intussusception, we comparedthe absorbability of our air-pressure reduction system with preexisting systems.
RESULTS
While extraluminalpressure was applied to the bowel model in which baseline intraluminal pressure was set to 120mmHg, this rose to176mmHg (56mmHg high to standard, 100%) in the direct infusion system, but to only 130 mmHg (10mmHg high tostandard, 17.9%) in a system connected to a large buffer of 10,500 mL capacity. Immediately after the applicationof extraluminal pressure for less than 1 sec, this air-pressure reduction system showed better absorbability thanthe hydrostatic reduction system. Applying this system to 20 infants with intussusception, this was successfullyreduced in 19 cases(95%), without complications.
CONCLUSION
In this experiment, it was proved that the systemabsorbed rapid intraluminal pressure elevation. Its use would help prevent bowel perforation during air reductionoccurring during intussusception.