Guidelines recommend non-invasive positive pressure ventilation (NPPV) for patients with acute decompensated heart failure (ADHF) with an inadequate response to initial oxygen therapy. During Japan’s coronavirus disease 2019 pandemic, NPPV use in emergency departments (EDs) was limited due to aerosol-spreading concerns. This study compared the respiratory management and clinical outcomes of patients with ADHF in EDs before and during the pandemic.
This retrospective cohort study was conducted at a single centre in Japan using hospital data from September to November 2019 (before the pandemic) and September to November 2020 (during the pandemic). Patients diagnosed with ADHF were included. Patients not responding to standard oxygen therapy were intubated or started on NPPV therapy. The primary outcome measure was discharge after death. The secondary outcomes were length of hospital stay and medical expenses. The study included 37 patients before the pandemic and 36 during the pandemic. No significant differences were found in vital signs or laboratory data between the groups. NPPV utilization decreased significantly from 26 (70.3%) to 7 (19.4%) (P < 0.01). Two patients required intubation during both periods, with no significant differences (P = 0.98). No significant intergroup disparities were observed in discharge after death (1/36 [2.7%] vs. 1/37 [2.7%]; P = 0.19), length of hospital stay (17.5 vs. 19.0 days; P = 0.65), and medical expenses (57 590 vs. 57 600 yen; P = 0.65).
Despite a large decrease in NPPV use before and during the pandemic, there were no significant differences in discharge after death, hospital stay, or medical expenses.

© 2024 The Author(s). ESC Heart Failure published by John Wiley & Sons Ltd on behalf of European Society of Cardiology.