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Does Size Matter? The Effect of Size of Distal Perfusion Catheter on Acute Limb Ischemia: A Meta-Analysis.
ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs 2024 March 6
Prevention of limb ischemia in patients with venoarterial extracorporeal membrane oxygenation (VA-ECMO) is primarily achieved through the use of distal perfusion catheters (DPC). Our objective was to assess the role of DPC, and specifically the size of the catheter, in reducing the incidence of acute limb ischemia (ALI) through a meta-analysis. Seventeen studies met criteria for analysis. Pooled analysis included a total of 2,040 patients, of which 904 patients received ECMO with DPC and 1,136 patients underwent ECMO without DPC. Compared with ECMO alone, ECMO with DPC, regardless of size, significantly decreased ALI (relative risk [RR]: 0.49, 95% confidence interval [CI]: 0.31-0.77; p = 0.002). When comparing reactive versus prophylactic placement of DPC, prophylactic DPC was associated with significantly decreased ALI (RR: 0.41, 95% CI: 0.24-0.71; p = 0.02). No differences in mortality (RR: 0.89, 95% CI: 0.76-1.03; p = 0.12) and bleeding events (RR: 1.43, 95% CI: 0.41-4.96; p = 0.58) were observed between the two groups. This analysis demonstrates that the placement of DPC, if done prophylactically and regardless of size, is associated with a reduced risk of ALI versus the absence of DPC placement, but is not associated with differences in mortality or bleeding events.
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