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  • Title: The postoperative incidence of small bowel obstruction following standard, open appendectomy and cholecystectomy: a six-year retrospective cohort study at Yale-New Haven Hospital.
    Author: Zbar RI, Crede WB, McKhann CF, Jekel JF.
    Journal: Conn Med; 1993 Mar; 57(3):123-7. PubMed ID: 8477590.
    Abstract:
    The incidence of postoperative small bowel obstruction (SBO) after standard, open appendectomy and cholecystectomy was calculated during a six-year period at a university medical center hospital, which is the larger of two local, community hospitals. A cohort of 567 patients who underwent either a standard, open appendectomy or cholecystectomy from 1 October 1985 through 30 September 1986 was assembled. Of these patients, 182 (32.1%) were readmitted to the hospital prior to 1 October 1991 and thereby received follow-up. The time-related incidence of readmission to the hospital with a specific diagnosis of SBO as estimated by the Kaplan-Meier method was tabulated. This analysis revealed the following incidence rates of postoperative SBO: 10.7% following appendectomy during 64 months of follow-up (n = 41) and 6.4% following cholecystectomy during 67 months (n = 141). The Kaplan-Meier product-limit incidence of postoperative SBO was significantly different for standard appendectomy versus standard cholecystectomy (Breslow-Cox P value < 0.0277). This implies that the anatomical position and/or the likelihood of perioperative infection associated with open, abdominal surgery plays a significant role in subsequent adhesion formation and development of SBO. These data may be compared to laparoscopic techniques in future studies.
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