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체외순환 없는 관상동맥우회술시 Propranolol이 Dobutamine 투여에 미치는 영향

Other Titles
 The Effect of Preoperative Propranolol Medication on Dobutamine Infusion in Off-pump Coronary Artery Bypass Graft Surgery 
 오영준  ;  방서욱  ;  곽영란  ;  이재훈  ;  신혜란  ;  이종화 
Journal Title
Issue Date
catecholamine ; dobutamine ; off-pump coronary artery bypass graft surgery ; propranolol ; hemodynamics
Background: Preoperative β-adrenergic receptor (β-AR) antagonist administration is known to improve ventricular function by decreasing the myocardial oxygen demand in coronary artery obstructive disease (CAOD). This study evaluated the effect of preoperative propranolol on response to β-AR agonist, dobutamine in patients undergoing off-pump coronary artery bypass graft surgery (CABG) Methods: Twenty six patients undergoing off-pump CABG, and treated with propranolol preoperatively, were enrolled in this study. After anesthesia, the infusion of dobutamine was started at 2 ㎍/㎏/min (D2) for 5 min and then increased to 4 ㎍/㎏/min (D4) and 8 ㎍/㎏/min (D8) in succession. The same protocol was performed twice before and after coronary artery anastomosis (pre-graft and post-graft). Hemodynamic variables were measured just before the infusion of dobutamine (DO, baseline) and after each dobutamine infusion at D2, D4 and D8. Results: No significant change was observed in the cardiac index (CI) during the pre-graft period, but CI increased significantly at D4 and D8 compared with D0 during the post-graft period. Mean arterial pressure (MAP), mean pulmonary artery pressure (MPAP) and systemic vascular reststance index (SVRI) increased at D2, D4 and D8 and heart rate (HR) decreased at D2 and D4 during the pre-graft period. MAP and SVRI did not dhange and HR and CI increased at D4 and D8 during the post-graft period. The % change of CI from DO significantly increased at D4 and D8 during the post-graft period than during the pre-graft period but not at D2. MAP, SVRI and MPAP after dobutamine infusion significantly increased during the pre-graft period than during the post-graft period. HR showed a reversed trend. Conclusions: Dobutamine infusion did not exert any known positive inotropic effect, besides increased MAP, MPAP and SVRI, in patients treated with propranolol preoperatively undergoing off-pump CABG during the pre-graft period. Meanwhile, dobutamine exerted slight inotropic effects during the post-graft period. Cautious use of dobutamine during the pre-graft period is needed in patients treated with propranolol preoperatively.
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1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
Kwak, Young Lan(곽영란) ORCID logo https://orcid.org/0000-0002-2984-9927
Bang, Sou Ouk(방서욱)
Shin, Hye Ran(신혜란)
Oh, Young Jun(오영준) ORCID logo https://orcid.org/0000-0002-6258-5695
Lee, Jong Wha(이종화)
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