AI Article Synopsis
- High-flow nasal cannula (HFNC) has been shown to be more effective than conventional oxygen therapy (COT) in preventing intubation for patients experiencing acute hypoxic respiratory failure, although its effectiveness in the immediate postoperative period is less clear.
- * The study included 11 randomized controlled trials (RCTs) with 2,201 patients, finding that HFNC significantly reduced reintubation rates and the need for increased respiratory support compared to COT.
- * However, HFNC showed no significant differences in other outcomes, such as ICU length of stay, when compared to COT or noninvasive ventilation (NIV), indicating mixed results for its routine use postoperatively.*
Article Abstract
Background: Studies have demonstrated that high-flow nasal cannula (HFNC) prevents intubation in acute hypoxic respiratory failure when compared with conventional oxygen therapy (COT). However, the data examining routine HFNC use in the immediate postoperative period are less clear.
Research Question: Is routine HFNC use superior to COT or noninvasive ventilation (NIV) use in preventing intubation in patients postoperatively?
Study Design And Methods: We comprehensively searched databases (PubMed, Embase, Web of Science) to identify randomized controlled trials (RCTs) that compared the effect of HFNC use with that of COT or NIV in the immediate postoperative period on reintubation, escalation of respiratory support, hospital mortality, ICU and hospital length of stay (LOS), postoperative hypoxemia, and treatment complications. We assessed individual study risk of bias (RoB) by using the revised Cochrane RoB 2 tool and rated certainty in outcomes by using the Grading of Recommendations Assessment, Development and Evaluation framework.
Results: We included 11 RCTs enrolling 2,201 patients. Ten compared HFNC with COT and one with NIV. Compared with COT use, HFNC use in the postoperative period was associated with a lower reintubation rate (relative risk [RR], 0.32; 95% CI, 0.12-0.88; absolute risk reduction [ARR], 2.9%; moderate certainty) and decreased escalation of respiratory support (RR, 0.54; 95% CI, 0.31-0.94; ARR, 5.8%; very low certainty). Post hoc subgroup analysis suggested that this effect was driven by patients who were obese and/or at high risk (subgroup differences, P = .06). We did not find differences in any of the other stated outcomes between HFNC and COT. HFNC was also no different from NIV in reintubation rate, respiratory therapy failure, or ICU LOS.
Interpretation: With evidence of moderate certainty, prophylactic HFNC reduces reintubation and escalation of respiratory support compared with COT in the immediate postoperative period after cardiothoracic surgery. This effect is likely driven by patients who are at high risk and/or obese. These findings support postoperative prophylactic HFNC use in the patients who are at high risk and/or obese undergoing cardiothoracic surgery.
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| http://dx.doi.org/10.1016/j.chest.2020.06.038 | DOI Listing |
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