“…Other studies found that the use of milrinone after CPB in pediatric patients undergoing Fontan procedure has no effect on the oxygen saturation, elevated pulmonary vascular resistance, central venous pressure, left atrial pressure, transpulmonary pressure gradient, and clinical outcomes after Fontan and the possible causes, (1) a limited amount of milrinone could enter into the pulmonary circulation at the initial stage as a result of a significant shunt to the systemic circulation through the fenestration, secondary-to-high pulmonary vascular resistance, and a lower concentration of milrinone in the pulmonary vascular wall; (2) the optimum concentration in the blood requires maintained infusion to be effective. [ 3 6 23 24 25 26 ]…”