Purpose or Case Report: The lower GI study with water soluble contrast, is used to evaluate the remnant colon. The population to study includes patient with anorectal malformation, stenosis due to necrotizing enterocolitis, bowel resections or to plan the ostomy closure.
There are scarce adverse effects reported in the literature.

Case: We present a 7-month-old boy with operated cardiopathy and the prior story of necrotizing enterocolitis with bowel perforation a few days after the birth, with surgical intervention resolution. By the time of the study, our patient had ileostomy and colostomy in plan of reconnection, for that reason, the GI study was planned.
The patient was lying down face up in the table. Plane X Ray of the abdomen was taken as a first move of the examination (normal air distribution, no abnormal radiopacities). Then a probe with a balloon was introduced in to the distal ostomy and the balloon was inflated with 5 ml of air to prevent the loose of the probe. A syringe of 20 ml was connected, and the solution was injected (1/3 ml Triyosom GI* and 2/3 ml water) with a moderated hydrostatic pressure. During the injection fluoroscopy was given and images of the distal colon were seen. No fistulas or loose of contrast was evidenced, neither contrast out of anus was seen, as a result of stenosis in that point. We emptied the distal colon by taking out the contrast.
3 hours after the practice the patient started vomiting, abdominal distention and signs of sepsis. He was admitted at the emergency. Finally, he died 6 hours after the GI study had been performed. Analytic results of the blood: 2/2 positive to Gram Negative. Autopsy informed: no GI signs of bacterial translocation.

*Meglumina diatrizoato-diatrizoico acido.

Methods & Materials:
Results:
Conclusions: We assume the death as an unwanted consequence of the GI study. We reviewed all the distal colon studies that were performed in the last 5 years in our hospital, we looked for any complication after 4 days of the GI study. We found 180 patient that underwent the procedure and only 7 of them present any complication. They were admitted and put into ATB treatment. Only one death, our patient. We still don’t know what was the event that caused the bacteremia in the patient, if the concentration of the contrast or the hydrostatic pressure during the infusion. Considering this event we protocolized the following up of every child that undergo a GI study: The patient must be in observation room during 6 hours after the study is done.