A standardised comparison of chest and percutaneous drainage catheters to evaluate the applicability of the ‘French’ sizing units
This study evaluated the internal diameters and flow rates of 6 Fr–12 Fr drainage catheters from eight manufacturers under standardized conditions. Results revealed significant variability in internal dimensions and performance, with some smaller catheters outperforming larger ones. Notably, thin-walled 10 Fr drains exceeded the flow rates of certain 12 Fr Seldinger chest drains. The findings highlight the limitations of the French sizing system and underscore the need for clearer manufacturer data to guide optimal catheter selection and improve patient outcomes in chest drainage.
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