Figure 3.

(A) A set of Robert clamps ([a] and [b]) is open for del Nido cardioplegia delivery. Clamp (a) is open and del Nido cardioplegia is delivered through a ¼ line. Clamp (b) is open and blood is delivered through a 3/16 line (blood:crystalloid ratio is 1:4). (B) A set of Robert clamps ([c] and [d]) is open for the Buckberg cardioplegia delivery. Clamp (c) is open and Buckberg cardioplegia is delivered through a 3/16 line. Clamp (d) is open and blood is delivered through a ¼ line (blood:crystalloid ratio is 4:1).