High-Flow Nasal Cannula versus Non-Invasive Positive Pressure Ventilation in Adults with Acute Hypoxemic (Type 1) Respiratory Failure: A Meta-Analysis of Efficacy, Intubation Rates, and Mortality
Abstract
Background: Acute hypoxemic respiratory failure (AHRF), or Type 1 respiratory failure, is a common life-threatening condition characterized by severe impairment in arterial oxygenation. High-flow nasal cannula (HFNC) and Non-Invasive Positive Pressure Ventilation (NIPPV) are two widely used non-invasive respiratory support strategies. However, their comparative effectiveness in adults with Type 1 AHRF remains a subject of ongoing investigation. This meta-analysis aimed to compare the efficacy, intubation rates, and mortality associated with HFNC versus NIPPV in this patient population.
Methods: A systematic search of PubMed, EMBASE, Scopus, and the Cochrane Central Register of Controlled Trials (CENTRAL) was conducted for randomized controlled trials (RCTs) published between January 2014 and December 2024. Studies comparing HFNC with NIPPV in adult patients with Type 1 AHRF were included. The primary outcomes were the rate of endotracheal intubation and all-cause mortality (hospital or 28-day). Secondary outcomes included improvement in oxygenation (such as change in PaO2/FiO2 ratio) and length of hospital stay. Two reviewers independently screened studies, extracted data, and assessed the risk of bias using the Cochrane Risk of Bias tool. Meta-analyses were performed using a random-effects model, and results were expressed as Risk Ratios (RR) with 95% Confidence Intervals (CI) for dichotomous outcomes and Mean Differences (MD) for continuous outcomes. Heterogeneity was…
How strong is the evidence?
Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 1,850 participants or records.
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