Cleveland Clinic dual cardioplegia circuit for the del Nido cardioplegia delivery. (A) Centrifugal pump, (B) reservoir and oxygenator, (C) leukocyte filter, (D) Plasma-Lyte® A solution, (E) heart–lung machine, (F) cardioplegia heat exchanger, (G) manometer for the cardioplegia system, (H) del Nido cardioplegia solution.