Abstract
BACKGROUND: Various studies have been performed to examine the effect of high-flow nasal cannula (HFNC) in immunocompromised patients with acute respiratory failure (ARF). However, the results were inconsistent. Thus, we conducted a meta-analysis to evaluate the effect of HFNC oxygen therapy in immunocompromised patients with ARF versus conventional oxygen therapy and noninvasive ventilation (NIV).
METHODS: Relevant studies published prior to May 11, 2019, were systematically searched. The primary outcome was intubation rate; secondary outcomes were mortality (ICU mortality, in-hospital mortality, and 90-d mortality) and ICU-acquired infections. Data were pooled using the random effects model.
RESULTS: Of 832 identified studies, 8 were eligible for inclusion in our analysis (N = 2,167 subjects). HFNC was associated with lower intubation rates compared to conventional oxygen therapy (risk ratio [RR] 0.89, 95% CI 0.79–1.00, P = .040), but we found no significant difference in the rate between HFNC and NIV (RR 0.74, 95% CI 0.46–1.19, P = .22). We also found that HFNC did not increase the risk of ICU-acquired infections (RR 0.86, 95% CI 0.63–1.18, P = .35). However, in comparison to other noninvasive therapies, HFNC exhibited no differences in ICU mortality (RR 0.82, 95% CI 0.58–1.17, P = .28), in-hospital mortality (RR 0.92, 95% CI 0.74–1.15, P = .48), or 90-d mortality (RR 0.98, 95% CI 0.81–1.18, P = .82).
CONCLUSIONS: Our results suggest that HFNC may be a feasible alternative to NIV, with lower intubation rates and no increased risk for ICU-acquired infections compared to standard oxygen therapy. However, HFNC did not appear to reduce mortality in immunocompromised subjects with ARF compared with other noninvasive therapies. Further high-quality randomized controlled trials should be performed to confirm these findings.
- high-flow nasal cannula oxygen therapy
- conventional oxygen therapy
- noninvasive ventilation
- acute respiratory failure
- immunocompromised host
- intubation rate
Footnotes
- Correspondence: Zhaohui Tong MD PhD, Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine, Beijing Chao-yang Hospital, Capital Medical University, 8 Gong Ti South Road, Chao-Yang District, Beijing, 100020, China. E-mail: tongzhaohuicy{at}sina.com.
The authors have disclosed no conflicts of interest.
Drs Kang and Zhao are co-first authors.
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