Cardiopulmonary bypass is discontinued
only after:
1.  Starting dobutamine at 5 mcg/kg/min
to give inotropic support and chrono-
tropic stimulation;
2.  Starting nitroglycerin to relax
the pulmonary vascular bed;
3.  Hyperventilating the patient to
a pCO2 of 30-40 with 100% oxygen to
relax the pulmonary vascular bed;
4.  Decreasing pump flow gradually
while giving enough volume for the
heart to take over the circulation,
but not distend.