Cardiopulmonary Bypass Circuit Modification Proposal for Modified Ultrafiltration in Children

ABSTRACT

Cardiopulmonary bypass (CPB) in children presents challenges related to blood volume and surface area of the circuit. Conventional ultrafiltration (CUF) is used to minimize complications, but modified ultrafiltration (MUF) can optimize clinical outcomes. We propose a modification to the CPB circuit, incorporating three luer connectors and a 12 Fr extension tube, allowing for simple and safe MUF implementation. Since 2014, this technique has been applied to approximately 3,500 children weighing < 20 kg, proving to be effective and low-cost. The new configuration does not require additional pumps, facilitates volume replacement, and maintains blood temperature, thereby improving procedural safety. Results indicate that this circuit modification for MUF offers safe and efficient management strategy for pediatric patients, with low risk of complications and potential easy implementation in various cardiovascular surgery centers.

Keywords:
Extracorporeal Circulation; Heart Defects; Congenital; Ultrafiltration; Cardiovascular Surgical Procedures.