High flow nasal oxygen as a “second‐line” therapy for COVID‐19 patients intolerant to noninvasive ventilation. A retrospective cohort study

• Federico Lionello,
• Gabriella Guarnieri,
• Giovanna Arcaro,
• Andrea Vianello

Affiliations

Federico Lionello

Department of Cardiac, Thoracic and Vascular Sciences University of Padova Padova Italy

Gabriella Guarnieri

Department of Cardiac, Thoracic and Vascular Sciences University of Padova Padova Italy

Giovanna Arcaro

Department of Cardiac, Thoracic and Vascular Sciences University of Padova Padova Italy

Andrea Vianello

Department of Cardiac, Thoracic and Vascular Sciences University of Padova Padova Italy