Cardiothoracic & vascular anesthesia

High-Flow Nasal Oxygen Therapy After Cardiac Surgery: A Randomized Clinical Trial

JAMA Netw OpenPublished Randomised controlled trial

Primary result · DAH90 without increased supportResult — go to the resultMedian difference 0 95% CI 0–0

Authors' conclusion

In this randomized clinical trial of HFNOT in patients at increased risk of postoperative pulmonary complications after nonemergent cardiac surgery, HFNOT did not improve DAH90 without increased support.

Study context

Population
Adults undergoing nonemergent cardiac surgery with a risk factor for pulmonary complications (COPD, asthma, recent lower respiratory tract infection, BMI ≥35, or smoking >10 pack-years); 17 centres in 3 countries1,224 with complete DAH90 data
Participants
1,280 adults
Comparison
Prophylactic high-flow nasal oxygen therapy (HFNOT) vs standard oxygen therapy (SOT) for ≥16 h after postoperative extubation
  • HFNOTn = 640
  • SOTn = 640reference
Primary endpoint
DAH without increased support compared with baseline (DAH90)
Follow-up
90 days
Methodological detailsadaptive, parallel group, multicentre, blinded outcome assessment, preplanned sample size re-estimation
  • Adaptive
  • Parallel group
  • Multicentre
  • Blinded outcome assessment
  • Preplanned sample size re-estimation

Primary result

DAH90 without increased support

Median difference

0

95% CI 0–0

P = 0.75

By group

HFNOT

0

median · IQR 0–79

SOT

0

median · IQR 0–87

HFNOT vs SOT
median difference 0 (95% CI 0–0); P = 0.75

As reported in the abstract

Secondary outcomes

Secondary clinical outcomes, incl. DAH90 without considering additional support

Similar between groups

Original publication

High-Flow Nasal Oxygen Therapy After Cardiac Surgery: A Randomized Clinical Trial. JAMA Netw Open. Published 1 April 2026. doi:10.1001/jamanetworkopen.2026.5447

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