High-yieldHigh-yieldSystematic review

Comparative effectiveness of suction versus water seal following tube thoracostomy in traumatic pneumothorax and hemothorax: An updated systematic review and meta-analysis

AJEM31 Jul 2026Practice Updates

While the data points toward suction improving hospital stay and lung expansion post tube thoracostomy, remember that this evidence is tempered by a significant methodological limitation: all included trials were poorly blinded. Therefore, while it's worth considering in borderline cases, do not change standard practice based solely on these findings until higher-quality, well-designed randomized controlled trials become available.

EDCritix summary

This updated systematic review and meta-analysis directly compares the use of suction versus a standard water seal drainage system following tube thoracostomy for managing traumatic pneumothorax and hemothorax. The authors synthesized data to determine which drainage method offers superior clinical outcomes in this common trauma scenario. Overall, the analysis suggests that applying suction provides tangible benefits, specifically showing reductions in both overall hospital length of stay and the required duration of chest tube placement, alongside better rates of full lung expansion. However, the review team strongly cautions readers regarding the interpretation of these positive results because every single trial incorporated into the meta-analysis was flagged as being at a high risk of bias, largely due to inadequate blinding procedures for clinicians, participants, and outcome assessors.