Abstract
Background
Patients with diverticular disease complicated by abscess and/or perforation represent the most severely afflicted with the highest mortality and poorest outcomes. This study investigated patient and operative factors associated with poor outcomes from diverticulitis complicated by abscess or perforation.
Methods
We analyzed the National Inpatient Sample to identify inpatient discharges for colonic diverticulitis in the United States from 1/1988 to 9/2015. We identified patients with perforation and/or intestinal abscess based on ICD-9 codes. The primary outcome was inpatient mortality.
Results
During the study period, a total of 993,220 patients were discharged with diverticulitis from sampled U.S. hospitals. From this group, 10.7% had an abscess and 1.0% had a perforation associated with diverticular disease. Inpatient mortality of diverticulitis patients with a perforation was 5.4% compared to 1.5% in those without a perforation (p<0.001). Patients with a perforation who underwent surgery had an inpatient mortality of 6.3% vs. 3.0% mortality amongst patients with a perforation who did not undergo an operation (p<0.001). Patients with a perforation that underwent surgery had a 31% increased mortality risk for each day after admission that a procedure was delayed (OR 1.31, CI 1.05–1.78; p=0.03). Mortality risk was increased for patients with either abscess or perforation who underwent surgery if they were female, age ≥65, higher comorbidity, were admitted urgently, underwent peritoneal lavage, or had a post-procedural complication.
Conclusions
Patients with perforated diverticular disease had substantial associated inpatient mortality compared to those with uncomplicated diverticulitis. This increased risk may be associated with performance of peritoneal lavage or because of a delay to procedural intervention.
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This study was presented virtually as an oral presentation at the 2020 American Society of Colon and Rectal Surgeons (ASCRS) Annual Scientific Meeting in June 2020.
Supplementary Information
Supplemental Table 1.
ICD-9 Codes for Procedure Related Complications (DOCX 306 kb)
Supplemental Table 2.
Annual Cases of Diverticulitis Admissions & Rate of Inpatient Mortality (DOCX 261 kb)
Supplemental Table 3.
Patient Disposition Following Hospitalization (DOCX 116 kb)
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Sell, N.M., Stafford, C.E., Goldstone, R.N. et al. Delay to Intervention for Complicated Diverticulitis is Associated with Higher Inpatient Mortality. J Gastrointest Surg 25, 2920–2927 (2021). https://doi.org/10.1007/s11605-021-04972-9
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DOI: https://doi.org/10.1007/s11605-021-04972-9