• Leon Salem, Daniel A Anaya, and David R Flum.
• Department of Surgery, University of Washington, Seattle, WA 98195-6410, USA.
• J. Surg. Res. 2005 Apr 1; 124 (2): 318-23.

PurposeThis study was designed to evaluate temporal trends in the use and type of operative and non-operative interventions in the management of diverticulitis.MethodsA retrospective cohort using a statewide administrative database was used to identify all patients hospitalized for diverticulitis in the state of Washington (1987-2001). Poisson and logistic regression were used to calculate changes in the frequency of hospitalization, operative and percutaneous interventions, and colostomy over time.ResultsOf the 25,058 patients hospitalized non-electively with diverticulitis (mean age 69 +/- 16, 60% female) there were only minimal changes in the frequency of admissions over time (0.006% increase per year-IRR 1.00006 95% CI 1.00004, 1.00008). The odds of an emergency colectomy at initial hospitalization decreased by 2% each year (OR 0.98 95% CI 0.98, 0.99) whereas the odds of percutaneous abscess drainage increased 7% per year (OR 1.07 95% CI 1.05, 1.1). Among patients undergoing percutaneous drainage, the odds of operative interventions decreased by 9% compared to patients who did not have a percutaneous intervention (OR 0.91 95% CI 0.87, 0.94). The proportion of patients undergoing colostomy during emergency operations remained essentially stable over time (range 49-61%), as did the proportion of patients undergoing prophylactic colectomy after initial non-surgical management (approximately 10%).ConclusionsThere was a minimal increase in the frequency of diverticulitis admissions over time. A rise in percutaneous drainage procedures was associated with a decrease in emergency operative interventions. The proportion of patients undergoing colostomy remained stable, and there does not seem to be a significant increase in the use of one-stage procedures for diverticulitis.

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