Factors associated with 30-day all-cause hospital readmission after tracheotomy in pediatric patients

Abstract

Objective To determine factors associated with post-tracheotomy hospital readmission within 30 days of discharge. Methods Children 18 years and younger who underwent tracheotomy at Children’s Hospital Los Angeles (CHLA) between 1/1/2005 and 12/31/2013 with at least 30 days of follow-up at CHLA were identified through ICD-9 procedure codes. Patient characteristics and covariates were obtained by linking manual chart review and administrative data. We used multivariate logistic regression to identify the independent association between risk factors and the primary outcome of 30-day all-cause same-hospital readmission. Results Of the 273 patients included, the median age at admission was 6 months [interquartile range (IQR): 1–51 months]. Among this primarily male (60.8%) and Hispanic (66.3%) cohort with a high proportion of discharge on positive pressure ventilation (47.1%), the 30-day readmission rate was 22% (n=60). Of the readmissions, 92% (n=55) were unplanned and 64% (n=35) were associated with acute respiratory illnesses. Multivariate regression analysis demonstrated that, among patients ≤ 12 months, discharge on positive pressure ventilation [adjusted odds ratio (aOR)=2.88, 95% confidence interval (CI)=1.19–6.97] was associated with increased odds of readmission, while gastrostomy tube placement during the tracheotomy hospitalization (aOR=0.42, 95% CI=0.19–0.96) and prematurity (aOR=0.35, 95% CI=0.15–0.83) were associated with decreased odds of readmission. In patients > 1 year of age, increased length of hospitalization (aOR=1.01 per hospital day, 95% CI=1–1.02) and presence of comorbid malignancy (aOR=6.03, 95% CI=1.25–29.16) were associated with increased odds of readmission. Conclusions Over one-fifth of children undergoing tracheotomy had an unplanned hospital readmission within 30 days after discharge. Because the majority of readmissions were unplanned and due to acute respiratory illnesses, future research should investigate how discharge procedures and improved care coordination may lower readmission rates in high-risk patients (e.g., patients discharged on positive pressure ventilation).

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