Bedside upper gastrointestinal series in the neonatal intensive care unit

Abstract

BackgroundIn neonatal intensive care unit (NICU) patients with intubation status, fluoroscopic evaluation for the bowel is limited. This study was to evaluate the utility of bedside upper gastrointestinal (UGI) series with delayed radiographs (DR) for assessing duodenojejunal junction (DJJ) and small bowel passage in NICU patients with nonspecific bowel ultrasonography and contrast enema findings.MethodsWe reviewed clinical and imaging data for bedside UGI with DR of NICU patients from 2014 to 2019. Five abdominal radiographs were obtained at fixed time intervals of immediately after, 1min, 5min, 1h, and 2h following the administration of 5cc/kg isotonic water-soluble contrast agent via the nasogastric tube.ResultsTwenty bedside UGI with DR were performed in 17 patients (weight range: 520-3620g, age range: 0-4months). Confidence identifying the DJJ was either good (n=7) or equivocal (n=8) at immediate or 1min radiographs. The DJJ could not be evaluated in five from four delayed passage (including two meconium plug syndrome and one gastric volvulus) and one inadequate timing. There was only one case of intestinal malrotation, which was not detected on ultrasonography, but detected at the first UGI examination with good DJJ confidence.ConclusionsBedside UGI with DR can evaluate intestinal malrotation using immediate and 1min delay and small bowel passage using 1 and 2h delay images in NICU patients with nonspecific ultrasonographic and contrast enema findings. The majority with delayed contrast passages can have bowel pathology. Because of a small number of patients in this study, further studies with more infants are needed.