To explore the application value of intestinal decompression through transnasal tube and highly selective enterography in the diagnosis and treatment of small intestinal obstruction.

Thirty-six patients with small intestinal obstruction from February 2012 to October 2014 were selected. Intestinal decompression using transnasal tube assisted by endoscopy was applied in all patients and then highly selective enterography through transnasal tube was carried out. The morphology, movement and obstruction of focal bowel were observed dynamically and imaging diagnosis was made, combined with intraoperative findings, pathological diagnosis and treatment effect.

Transnasal tube placement and enterography were performed successfully in all patients. Among 36 patients, 14 patients were cured conservatively and 22 patients were cured using surgical treatment. The diagnosis agreement between preoperative imaging diagnosis and postoperative diagnosis was 94.4% (34/36) . In 15 patients with adhesive ileus, 13 patients were cured conservatively (86.6%, 13/15) and surgery was performed in two patients because of ineffective nonoperative treatment. In 8 patients with tumorous ileus, 7 patients were proved in operation and intestinal tuberculosis was found in the other patient. In 5 patients with internal hernia obstruction, 4 patients were proved in operation and intestinal adhesion was found in the other patient. In 4 patients with intestinal stone, 3 patients were cured conservatively and one patient was cured by operation. Intussusception in 4 patients was proved by operation.

Intestinal decompression using transnasal tube can quickly relieve abdominal pain in patients with intestinal obstruction and avoid emergency operation. Some patients with benign obstruction can be cured by conservative treatment. In order to make the operation more targeted, it is necessary to determine the cause of obstruction, degree and obstruction for transfer operation. Transnasal tube enterography is of great value to quantitative and locative diagnosis in patients with intestinal obstruction.