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  • Title: Small bowel obstruction: the role of nonoperative treatment in simple intestinal obstruction and predictive criteria for strangulation obstruction.
    Author: Bizer LS, Liebling RW, Delany HM, Gliedman ML.
    Journal: Surgery; 1981 Apr; 89(4):407-13. PubMed ID: 7209787.
    Abstract:
    The clinical presentation, treatment, and results of 405 patients with mechanical small intestinal obstruction admitted to the Montefiore Hospital and North Central Bronx Hospitals were reviewed. The etiology of obstruction was adhesions 74%, malignancy 8.6%, hernia 8.1%, inflammatory bowel disease 5.2%, and miscellaneous causes 4.1%. The overall mortality rate for the series was 6.7%, and the incidence of bowel strangulation was 10.1%. Strangulation occurred in 33.3% of the hernia group, 9.0% of the adhesions group, and 2.8% of the malignancy group. The largest single cause of death was related to malignant disease--12 cases (44.4%). Six deaths (22.2%) were caused by bowel strangulation. Of the patients who received more than 24 hours of nonoperative therapy, 46% had relief of obstruction. There was no statistically significant difference in successful results between patients managed with long tubes compared to patients managed with nasogastric tubes. Conservative therapy for malignant obstruction was not successful in 85% of cases. The presence of bowel strangulation shows a positive correlation with age (greater than 70 years), feculant vomiting, peristaltic sounds, and a white blood cell count higher than 18,000/mm3. It shows no correlation with onset, localization or type of pain, duration of symptoms, temperature, tachycardia, or x-ray findings. The results of the study indicate that accurate criteria for small bowel obstruction therapy have not been clearly defined except in patients with incarcerated hernias. Nonoperative management is successful in a significnt percentage of patients.
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