Experience with high-flow nasal oxygen therapy in COVID-19 patients on a regular internal medicine ward

Höfer, Markus; Schmiedskamp, Mark; Rezek, Spencer; Ott, Natalie; Unger, Ines; Volk, Georg; Hetzel, Jürgen

doi:10.1183/13993003.congress-2021.pa1760

Noninvasive Ventilatory Support 2021

DOI: 10.1183/13993003.congress-2021.pa1760

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Experience with high-flow nasal oxygen therapy in COVID-19 patients on a regular internal medicine ward

Markus Höfer

Mark Schmiedskamp

Spencer Rezek³

et al.

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2023

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“…These studies were predominantly performed within the ICU setting. To limit ICU referral in times of limited ICU resources, HFNO for hypoxemic failure has widely been applied in non-ICU settings (17)(18)(19)(20). However, the safety of HFNO in non-ICU settings is unclear, as few studies have investigated the safety and outcome of HFNO application in non-ICU settings (12,17,(21)(22)(23).…”

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Safety and Outcome of High-Flow Nasal Oxygen Therapy Outside ICU Setting in Hypoxemic Patients With COVID-19*

Janssen,

Türk,

Baart

et al. 2023

Critical Care Medicine

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OBJECTIVE: High-flow nasal oxygen (HFNO) therapy is frequently applied outside ICU setting in hypoxemic patients with COVID-19. However, safety concerns limit more widespread use. We aimed to assess the safety and clinical outcomes of initiation of HFNO therapy in COVID-19 on non-ICU wards. DESIGN: Prospective observational multicenter pragmatic study. SETTING: Respiratory wards and ICUs of 10 hospitals in the Netherlands. PATIENTS: Adult patients treated with HFNO for COVID-19-associated hypoxemia between December 2020 and July 2021 were included. Patients with treatment limitations were excluded from this analysis. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Outcomes included intubation and mortality rate, duration of hospital and ICU stay, severity of respiratory failure, and complications. Using propensity-matched analysis, we compared patients who initiated HFNO on the wards versus those in ICU. Six hundred eight patients were included, of whom 379 started HFNO on the ward and 229 in the ICU. The intubation rate in the matched cohort (n = 214 patients) was 53% and 60% in ward and ICU starters, respectively (p = 0.41). Mortality rates were comparable between groups (28-d [8% vs 13%], p = 0.28). ICU-free days were significantly higher in ward starters (21 vs 17 d, p < 0.001). No patient died before endotracheal intubation, and the severity of respiratory failure surrounding invasive ventilation and clinical outcomes did not differ between intubated ward and ICU starters (respiratory rate-oxygenation index 3.20 vs 3.38; Pao 2:Fio 2 ratio 65 vs 64 mm Hg; prone positioning after intubation 81 vs 78%; mortality rate 17 vs 25% and ventilator-free days at 28 d 15 vs 13 d, all p values > 0.05). CONCLUSIONS: In this large cohort of hypoxemic patients with COVID-19, initiation of HFNO outside the ICU was safe, and clinical outcomes were similar to initiation in the ICU. Furthermore, the initiation of HFNO on wards saved time in ICU without excess mortality or complicated course. Our results indicate that HFNO initiation outside ICU should be further explored in other hypoxemic diseases and clinical settings aiming to preserve ICU capacity and healthcare costs.

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confidence: 99%

Safety and Outcome of High-Flow Nasal Oxygen Therapy Outside ICU Setting in Hypoxemic Patients With COVID-19*

Janssen,

Türk,

Baart

et al. 2023

Critical Care Medicine

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Experience with high-flow nasal oxygen therapy in COVID-19 patients on a regular internal medicine ward

Cited by 1 publication

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Safety and Outcome of High-Flow Nasal Oxygen Therapy Outside ICU Setting in Hypoxemic Patients With COVID-19*

Safety and Outcome of High-Flow Nasal Oxygen Therapy Outside ICU Setting in Hypoxemic Patients With COVID-19*

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