AI Article Synopsis
- - The review evaluated the safety of bronchoalveolar lavage (BAL) in patients with severe acute respiratory failure (ARF) by analyzing various studies and trials to determine outcomes and complications.
- - A total of 17 studies encompassing 1,085 patients were analyzed, revealing a very low frequency of death (0.000%) and minor risks for severe complications during the procedure.
- - The findings suggest that BAL is likely safe, especially in patients receiving mechanical ventilation, and could be a beneficial diagnostic tool for identifying the causes of severe ARF of unknown origin.
Article Abstract
Background: This review aimed to investigate whether bronchoalveolar lavage (BAL) is safe in patients with severe acute respiratory failure (ARF).
Methods: We searched the MEDLINE, CENTRAL, and other databases up to June 2, 2021 for studies that examined BAL for severe ARF. We included all cohort studies and randomized or non-randomized trials, while we excluded case-control studies, case reports, and case series. We evaluated the quality of the evidence using the Grading of Recommendations, Assessment, Development, and Evaluation approach.
Results: We included 17 studies (1085 patients) in the meta-analysis. The integrated frequency of death was 0.000% (95% confidence interval [CI]: 0.000-0.045%, I = 0.0%). The pooled risk of severe complications of respiratory system, cardiovascular system, and major bleeding was 1.32% (95% CI: 0.000-4.41%, I = 84.8%), 0.040% (95% CI: 0.000-0.71%, I = 9.3%), and 0.000% (95% CI: 0.000-0.27%, I = 0.0%), respectively. In the subgroup analysis with mechanical ventilation during BAL, there were few severe complications of the respiratory system (3/717 patients in 13 studies) and almost no heterogeneity (I = 0.0%).
Conclusions: Our study suggests that severe complications of BAL for severe ARF are probably rare, particularly in patients receiving mechanical ventilation. After considering the risks and benefits, it would be worthwhile to consider performing BAL in patients with severe ARF of unknown etiology to pursue its cause.
Trial Registration: The protocol was registered with the University Hospital Medical Information Network Clinical Trials Registry (UMIN000040600).
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| http://dx.doi.org/10.1016/j.resinv.2021.07.008 | DOI Listing |
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