Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

28 questions · 30 findings · 2 reviews

No studies found 2 · 6.7%GRADE not reported 4 · 13.3%Very low 13 · 43.3%Low 8 · 26.7%Moderate 3 · 10%High 0 · 0%

HFNC vs standard oxygen therapy

Treatment failure (escalation of respiratory therapy to NIV, NIPPV or invasive ventilation) Measured up to 28 days · adults in the ICU, requiring respiratory support

HFNC may leads to lower treatment failure (escalation of respiratory therapy to NIV, NIPPV… compared with standard oxygen therapy (low certainty).

1 finding from 1 review

HFNC vs standard oxygen therapy

In‐hospital mortality (up to 90 days; included studies reported in‐hospital mortality, and mortality up to 28 days and up to ICU discharge) · adults in the ICU, requiring respiratory support

HFNC showed no clear difference in in‐hospital mortality (up to 90 days; included studies reported… compared with standard oxygen therapy (moderate certainty).

1 finding from 1 review

HFNC vs standard oxygen therapy

Adverse events Respiratory infection (pneumonia) Nasal mucosa or skin trauma · adults in the ICU, requiring respiratory support

HFNC showed no clear difference in adverse events Respiratory infection (pneumonia) Nasal mucosa or… compared with standard oxygen therapy (moderate certainty).

1 finding from 1 review

HFNC vs NIPPV or NIV

Treatment failure (escalation of respiratory therapy to NIV, NIPPV or invasive ventilation) Measured up to 28 days · adults in the ICU, requiring respiratory support

HFNC showed no clear difference in treatment failure (escalation of respiratory therapy to NIV, NIPPV… compared with NIPPV or NIV (low certainty).

1 finding from 1 review

HFNC vs NIPPV or NIV

In‐hospital mortality (up to 90 days; included studies reported in‐hospital mortality, and mortality up to 28 days and up to ICU discharge) · adults in the ICU, requiring respiratory support

HFNC showed no clear difference in in‐hospital mortality (up to 90 days; included studies reported… compared with NIPPV or NIV (low certainty).

1 finding from 1 review