Safety and outcomes of an early discharge strategy with oxygen home therapy in stable severe COVID-19 patients.

BACKGROUND: COVID-19 disease leads to prolonged hospitalisations and adverse outcomes. We describe our strategy for routine early discharge of severe COVID-19 patients with home oxygen during the Delta variant surge. METHODS: Our strategy included COVID-19 patients requiring oxygen support via nasal cannula, with stabilised but not yet improved respiration (intervention group), that followed strict criteria. Severe COVID-19 patients discharged after improved respiration were considered the control group for comparison. Outcomes included readmissions from active COVID-19 and 30-day mortality. RESULTS: The intervention group included 129 patients, and the control 150. The groups' baseline characteristics were similar, although the control group had more advanced COVID-19 severity. Among the intervention group, 23 (17.8%) had readmissions secondary to active COVID-19, compared to none in the control group. The 30-day mortality rate was similar between the groups (5% vs. 7%). The intervention led to a shorter hospital stay [median 3 days (IQR 2-4) vs. 6 days (IQR 4-9), p < .01], while a very short hospitalisation was associated with readmissions (2.8 vs. 3.5 days, p = .02). A subsequent critical disease or death after the intervention occurred in old (81 years), multimorbid (3.4 ± 1.4) patients with a high percentage of acute kidney injury during their first hospitalisation (50%). CONCLUSIONS: Our discharge strategy led to a short hospital stay, a high readmission rate, and similar long-term outcomes. Considering the difference in disease severity before discharge, this intervention cannot be considered safe for our study population. Correct patient selection is crucial to ensure patient safety when considering early discharge.

Associations of vaccine status with characteristics and outcomes of hospitalized severe COVID-19 patients in the booster era.

BACKGROUND: The resurgence of COVID-19 cases since June 2021, referred to as the fourth COVID-19 wave, has led to the approval and administration of booster vaccines. Our study aims to identify any associations between vaccine status with the characteristics and outcomes of patients hospitalized with severe COVID-19 disease. METHODS: We retrospectively reviewed all COVID-19 patients admitted to a large tertiary center between July 25 and October 25, 2021 (fourth wave in Israel). Univariant and multivariant analyses of variables associated with vaccine status were performed. FINDINGS: Overall, 349 patients with severe or critical disease were included. Patients were either not vaccinated (58%), had the first two vaccine doses (35%) or had the booster vaccine (7%). Vaccinated patients were significantly older, male predominant, and with a higher number of comorbidities including diabetes, hyperlipidemia, ischemic heart disease, heart failure, immunodeficient state, kidney disease and cognitive decline. Time from the first symptom to hospital admission was longer among non-vaccinated patients (7.2 ± 4.4 days, p = 0.002). Critical disease (p<0.05), admissions to the intensive care unit (p = 0.01) and advanced oxygen support (p = 0.004) were inversely proportional to the number of vaccines given, lowest among the booster vaccine group. Death (20%, p = 0.83) and hospital stay duration (8.05± 8.47, p = 0.19) were similar between the groups. CONCLUSION: Hospitalized vaccinated patients with severe COVID-19 had significantly higher rates of most known risk factors for COVID-19 adverse outcomes. Still, all disease outcomes were similar or better compared with the non-vaccinated patients.