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Published on: April 7, 2021
Surfactant therapy for acute respiratory failure in children: a systematic review and meta-analysis
Mark Duffett1, Karen Choong, Vivian Ng
1Department of Critical Care, McMaster Children's Hospital, 1200 Main St, W, Hamilton, Ontario L8S 4J9, Canada. duffett@hhsc.ca
Insights
Exogenous pulmonary surfactant reduces mortality in children with acute respiratory failure. This treatment also increases ventilator-free days and shortens the duration of mechanical ventilation, with no serious adverse events reported.
Area of Science:
- Pediatric Critical Care
- Respiratory Medicine
- Neonatal and Pediatric Research
Background:
- Acute respiratory failure in children is a critical condition.
- The efficacy and safety of exogenous surfactant therapy for pediatric acute respiratory failure remain unclear.
- This systematic review investigates the impact of exogenous pulmonary surfactant on mortality in mechanically ventilated children.
Purpose of the Study:
- To systematically review the effect of exogenous pulmonary surfactant on all-cause mortality in children with acute respiratory failure requiring mechanical ventilation.
Main Methods:
- A comprehensive search of multiple databases (MEDLINE, EMBASE, CINAHL, Ovid Healthstar), trial registries, and reference lists was conducted.
- Prospective, randomized, controlled trials involving intubated, mechanically ventilated children with acute respiratory failure were included, excluding neonates and asthma patients.
- Data extraction and quality assessment were performed independently by two reviewers, with quantitative pooling using a random-effects model where appropriate.
Main Results:
- Six trials involving 314 patients were analyzed.
- Exogenous surfactant significantly reduced all-cause mortality (RR = 0.7; 95% CI, 0.4 to 0.97; P = 0.04).
- Surfactant therapy was associated with increased ventilator-free days (WMD = 2.5 days; 95% CI, 0.3 to 4.6 days; P = 0.02) and reduced duration of ventilation (WMD = 2.3 days; 95% CI, 0.1 to 4.4 days; P = 0.04).
Conclusions:
- Exogenous surfactant administration decreases mortality in pediatric patients with acute respiratory failure.
- The use of surfactant is linked to improved outcomes, including more ventilator-free days and shorter ventilation duration.
- No serious adverse events were reported, suggesting a favorable safety profile for this intervention in the studied pediatric population.
Introduction:
Exogenous surfactant is used to treat acute respiratory failure in children, although the benefits and harms in this setting are not clear. The objective of the present systematic review is to assess the effect of exogenous pulmonary surfactant on all-cause mortality in children mechanically ventilated for acute respiratory failure.
Methods:
We searched the MEDLINE, EMBASE, CINAHL and Ovid Healthstar databases, the bibliographies of included trials and review articles, conference proceedings and trial registries. We included prospective, randomized, controlled trials of pulmonary surfactant that enrolled intubated and mechanically ventilated children with acute respiratory failure. We excluded trials that exclusively enrolled neonates or patients with asthma. Two reviewers independently rated trials for inclusion, extracted data and assessed the methodologic quality. We quantitatively pooled the results of trials, where suitable, using a random effects model.
Results:
Six trials randomizing 314 patients were included. Surfactant use reduced mortality (relative risk = 0.7, 95% confidence interval = 0.4 to 0.97, P = 0.04), was associated with increased ventilator-free days (weighted mean difference = 2.5 days, 95% confidence interval = 0.3 to 4.6 days, P = 0.02) and reduced the duration of ventilation (weighted mean difference = 2.3 days, 95% confidence interval = 0.1 to 4.4 days, P = 0.04).
Conclusion:
Surfactant use decreased mortality, was associated with more ventilator-free days and reduced the duration of ventilation. No serious adverse events were reported.
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