Malignant Otitis Externa Outcomes: A Study of the University HealthSystem Consortium Database

Abstract

Objective: To characterize factors that affect outcomes for patients with malignant otitis externa (MOE). Methods: Retrospective review of inpatients with MOE was performed. Patient demographics, comorbid conditions, complications, procedures, and mortalities were analyzed. Results: A total of 786 patients with MOE were identified. The mean hospitalization length of stay (LOS) was 18.6 days (SD = 19.7). The overall mortality rate was 2.5% (n = 20), and complication rate was 4.3% (n = 34). Increasing age significantly and positively correlated with the incidence of MOE (r = 0.979, P < .0001). Factors that were associated with an increased rate of mortality were sepsis (odds ratio [OR] = 18.5; ES = 0.94; 95% CI, 0.47-1.42), congestive heart failure (OR = 3.1; ES = 0.42; 95% CI, 0.02-0.82), weight loss (OR = 10.2; ES = 1.23; 95% CI, 0.61-1.85), and coagulopathy (OR = 8.8; ES = 1.84; 95% CI, 0.91-2.77). Surgical intervention was performed in 19.2% (n = 151) of patients. Facial nerve involvement was present in 15.5% (n = 122) of patients and was associated with a significantly longer LOS of 12.9 days (SD = 19.6; ES = 0.21; 95% CI, 0.03-0.41). Conclusions: This large multi-institutional database study of MOE demonstrates that several patient factors impact the LOS and mortality. Patients at risk for unfavorable outcomes include the elderly, male gender, comorbidities, or cranial nerve involvement.