Abstract
Purpose
Respiratory support is the mainstay for the management of patients with pulmonary contusion following blunt chest trauma. In patients not requiring immediate intubation and ventilation, the optimal respiratory management strategy is not clear. This systematic review and meta-analysis aimed to determine the efficacy of non-invasive ventilation (NIV), as compared to traditional respiratory support strategies (i.e., high-flow facemask oxygen or pre-emptive intubation and ventilation), in adult patients with blunt chest trauma.
Methods
We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) comparing NIV to traditional forms of respiratory support (i.e., facemask oxygen or intubation and ventilation) in an adult trauma population. For each eligible trial, we extracted the outcomes of all-cause mortality, length of intensive care unit (ICU) stay, length of hospital stay, and pneumonia.
Results
We identified 643 citations, selected 17 for full-text evaluation, and identified three eligible RCTs. Patients receiving NIV had a non-significant reduction in the risk of death (OR 0.55; 95 % CI 0.18–1.70; I 2 = 0 %), but significant reductions in length of ICU stay (mean difference −2.45 days; 95 % CI −4.27 to −0.63; I 2 = 66 %), length of hospital stay (mean difference −4.60 days; 95 % CI −8.81 to −0.39; I 2 = 85 %), and risk of pneumonia (OR 0.20; 95 % CI 0.09–0.47; I 2 = 0 %).
Conclusion
This meta-analysis suggests that NIV is superior to both high-flow facemask oxygen or pre-emptive intubation and ventilation in patients with blunt chest trauma who have no contraindication to NIV.
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Acknowledgments
Dr Rodseth is supported by a CIHR Scholarship (the Canada-HOPE Scholarship), Ottawa, Canada; the College of Medicine of South Africa (the Phyllis Kocker/Bradlow Award), Cape Town, South Africa; and the University of KwaZulu-Natal (competitive research grant), Durban, South Africa. Dr Biccard is supported by a National Research Foundation (NRF) grant and the University of KwaZulu-Natal (competitive research grant).
Conflict of interest
Dr’s Roberts, Skinner, Biccard and Rodseth declare that they have no conflict of interest.
Compliance with Ethics Guidelines
This article does not contain any studies with human or animal subjects performed by any of the authors.
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Appendix 1: Search strategy and databases
Appendix 1: Search strategy and databases
Database searches were conducted on 18 September 2012 using the OvidSP search engine (Ovid Technologies, Inc., New York, NY 2009) for the following databases:
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EMBASE 1979–2012 September 17
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OVID Health Star (1966–August 2012)
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3.
Ovid MEDLINE(R) In-Process and Other Non-Indexed Citations and OVID MEDLINE(R) 1946 to present
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4.
Cochrane Central Register of Controlled Trials (September 2012)
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Cochrane Database of Systematic Reviews (September 2012)
The MESH search terms used in Medline, OVID Health Star, and the Cochrane data bases were (1) Positive-Pressure Respiration.mp; and (2) Wounds and Injuries.mp. The EMBASE search terms used were: (1) Thorax injury.mp; and (2) artificial ventilation.mp.
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Roberts, S., Skinner, D., Biccard, B. et al. The role of non-invasive ventilation in blunt chest trauma: systematic review and meta-analysis. Eur J Trauma Emerg Surg 40, 553–559 (2014). https://doi.org/10.1007/s00068-013-0370-7
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DOI: https://doi.org/10.1007/s00068-013-0370-7