Transfusion-free cardiac reoperation in an 11-kg Jehovah's Witness child by use of a minimized cardiopulmonary bypass circuit.

Herein, we describe the design of a perfusion system for a complex cardiovascular reoperation in an 11-kg Jehovah's Witness patient. The goal of safe, transfusion-free surgery was achieved chiefly by minimizing the priming volume of the cardiopulmonary bypass circuit to 200 mL while providing adequate flow and standard safety features.