Early Initiation of non-invasive ventilation at home improves survival and reduces healthcare costs in COPD patients with chronic hypercapnic respiratory failure: A retrospective cohort study

Background: While non-invasive ventilation at home (NIVH) is gaining wider acceptance as a treatment option for chronic obstructive pulmonary disease with chronic respiratory failure (COPD-CRF), uncertainty remains about the optimal time to begin NIVH, whether a specific phenotype of COPD-CRF predicts improved outcomes, and how NIVH affects healthcare costs. Materials and methods: Using 100% research identifiable fee-for-service Medicare claims from 2016 through 2020, we designed an observational, retrospective, cohort study to determine how NIVH use in COPD-CRF patients stratified by CRF phenotype and by timing of initiation affected mortality, healthcare utilization, and total healthcare costs compared to a matched control group. Results: In hypercapnic COPD-CRF patients starting NIVH within the first week following diagnosis, risk of death was reduced by 43% (HR, 0.57; 95% CI 0.51-0.63, p < .0001), those starting 8-15 days following diagnosis had mortality reduction of 31% (HR, 0.69; 95% CI 0.62-0.77, p < .0001), and those starting 16-30 days following diagnosis showed mortality reduction of 16% (HR 0.84, CI 0.073-0.096, p < .01) compared to controls. Medicare spending was also associated with timing of NIVH initiation in hypercapnic COPD-CRF. Those beginning treatment 0-7 days and 0-15 days following diagnosis had a $5484 and a $3412 reduction in Medicare expenditures respectively the next year. NIVH was not associated with improved clinical outcomes or decreased Medicare spending in COPD-CRF patients who were not hypercapnic. Conclusion: In this study, early initiation of NIVH for hypercapnic COPD-CRF patients was associated with reductions in the risk of death and in total Medicare spending.