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Chronic obstructive pulmonary disease (COPD) has a significant disease burden and is among the leading causes of hospital readmissions, adding a significant burden on healthcare resources. The association between 30-day readmission in a COPD patient undergoing bronchoscopy and a wide range of modifiable potential risk factors, after adjusting for sociodemographic and clinical factors, has been assessed, and comparison has been made with COPD patients not undergoing bronchoscopy.  Methods  We conducted a comprehensive analysis of the 2016 Nationwide Readmission Database (NRD) of 30-day all-cause readmission among COPD patients undergoing bronchoscopy. A Cox’s proportional hazards model was used to obtain independent relative risks of readmission following bronchoscopy in COPD patients as compared to patients not undergoing bronchoscopy. Our primary outcome was the 30-day all-cause readmission rate in both groups. Other secondary outcomes of interest were the 10 most common reasons for readmission, resource utilization, independent predictors of readmission, and relative proportion of comorbidities between the index admission (IA) and the readmission in both groups.  Results  The overall rate of readmission following bronchoscopy in COPD patients as compared to patients not undergoing bronchoscopy was 17.32% and 15.87%, respectively. The final multivariate model in the bronchoscopy group showed that the variables found to be an independent predictor of readmission were: pulmonary hypertension (hazard ratio [HR] 2.35; 95% confidence interval [CI] 1.26-4.25; P < .01), adrenal insufficiency (HR 4.47; 95% CI 1.44-13.85; P = .01) and discharge to rehab status. Independent predictor variables of admission in Group B were gender (women < men; HR 0.91; 95% CI 0.88-0.93; P < .01), and type of insurance (Medicaid > Medicare > private insurance).  For all patients undergoing bronchoscopy, the mean length of stay (LOS) for IA was 11.91 ± 20.21 days, and LOS for readmission was 5.87 ± 5.48 days. The mean total cost of IA for patients undergoing bronchoscopy was much higher than that of readmission ($26,916 vs. $12,374, respectively). The entire LOS for readmission was 1,265 days, with a total cost of $2.66 million.  For patients not undergoing bronchoscopy during the IA, mean LOS for IA was 4.26 ± 4.27 days, and mean LOS for readmission was 5.39 ± 5.51 days, which was longer than the IA in Group B but still shorter than LOS for readmission in Group A (patients undergoing bronchoscopy). The mean total cost of readmission was higher than the IA ($8,137 for IA vs. $10,893 for readmission). The total LOS in this group of patients was 313,287 days, with the total cost of readmission at $628 million.  Conclusions  Patients undergoing bronchoscopy have a slightly higher rate of 30-day readmissions as compared to patients not undergoing bronchoscopy, and the LOS is also slightly higher in this group during subsequent readmissions as compared to readmission in patients not undergoing bronchoscopy in IA. The readmission rate in COPD patients is impacted by a variety of social, personal, and medical factors. Patients with multiple medical comorbidities have a higher risk of readmission. In our understanding, bronchoscopy in a patient with acute exacerbation of COPD should be reserved for selected patients, and the rationale should be clarified, as it affects the overall LOS and healthcare expenditure.

Incidence, Predictors, Causes, and Cost of 30-Day Hospital Readmission in Chronic Obstructive Pulmonary Disease Patients Undergoing Bronchoscopy