[Effects of amrinone on oxygen demand-supply relationship after cardiopulmonary bypass in patient undergoing coronary bypass surgery].
We evaluated the effects of amrinone on oxygen demand-supply relationship after cardiopulmonary bypass (CPB) in patient undergoing coronary bypass surgery comparing with the patients not receiving amrinone. In amrinone treated patients bolus dose of amrinone 1.5 mg.kg-1 was administrated into the reservoir of CPB and followed by continuous infusion at a rate of 5 micrograms.kg-1.min-1. Hemodynamics and blood gas (arterial and mixed venous) measurements were carried out immediately after CPB, 1 hour after CPB and after the chest closure. After the chest closure, cardiac index and oxygen supply in amrinone treated group were significantly higher and systemic vascular resistance was significantly lower than in non-treated group. Left ventricular stroke work index, rate pressure product and oxygen consumption showed no significant difference between the two groups. These data indicate that the amrinone treated patients preserved better oxygen demand-supply relationship after CPB compared with the non-treated patients undergoing coronary bypass surgery.
Sha
K
K
Department of Anesthesiology, Nara Medical University, Kashihara.
Shimokawa
M
M
Kawaguchi
M
M
Sakamoto
T
T
Nishimura
K
K
Kaneko
M
M
Kitaguchi
K
K
Furuya
H
H
D000676:Amrinone / Q000008:administration & dosage* / Q000494:pharmacology; D002315:Cardiopulmonary Bypass; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000378:metabolism / Q000601:surgery; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D010101:Oxygen Consumption / Q000187:drug effects; D010726:Phosphodiesterase Inhibitors / Q000008:administration & dosage* / Q000494:pharmacology; D015300:Ventilator Weaning
D010726:Phosphodiesterase Inhibitors; D000676:Amrinone