Background: Apheresis procedures require adequate vascular access to achieve optimal inlet flow rates. While central lines provide such access, their placement and use are associated with risks; some of these risks are minimized if peripheral intravenous access can be established. However, peripheral intravenous access is associated with challenges in the pediatric setting. Research indicates that midline catheters reduce the use of CVADs and their associated risks. The use of midline catheters for apheresis has been reported recently in adults, but no studies have been published on their use in children. Thus, the purpose of this study was to evaluate the use of midline catheters for apheresis in the pediatric setting.
Methods: A retrospective observational study was conducted to evaluate the safety and efficacy of midline catheters in subjects who underwent apheresis at a pediatric hospital from April 2018 to August 2020. Demographic data, clinical data (diagnosis, procedure, catheter size, body mass), and outcome data (inlet flow rate, total blood volume processed, procedure time, and cell counts) were collected.
Results: Eighteen subjects received a total of 100 midline catheters for 73 apheresis procedures. Inlet flow rates ranged from 45 to 80 mL/min, TBV ranged from 2872 to 20 000 mL, and procedure time ranged from 1.25 to 7 hours. Inlet flow rates met or exceeded the recommended inlet flow rates for apheresis in children and adults (P < .0001). No adverse events occurred.
Conclusion: Midline catheters provide safe and effective vascular access for apheresis. Future research should include younger patients with lower body mass.Reference:
Casacchia C, Lozano M, Schomberg J, Barrows J, Salcedo T, Puthenveetil G. Novel use of a midline catheter for therapeutic and donor apheresis in children and adults. J Clin Apher. 2021 Jul 5. doi: 10.1002/jca.21919. Epub ahead of print. PMID: 34224175.