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Effects of chronic angiotensin II receptor antagonist and angiotensin-converting enzyme inhibitor treatments on neurohormonal levels and haemodynamics during cardiopulmonary bypass

 Y. J. Oh  ;  J. H. Lee  ;  S. B. Nam  ;  J. K. Shim  ;  J. H. Song  ;  Y. L. Kwak 
 BRITISH JOURNAL OF ANAESTHESIA, Vol.97(6) : 792-798, 2006 
Journal Title
Issue Date
Adult ; Aged ; Angiotensin Receptor Antagonists* ; Angiotensin-Converting Enzyme Inhibitors/adverse effects ; Angiotensin-Converting Enzyme Inhibitors/pharmacology* ; Blood Pressure/drug effects ; Cardiac Output/drug effects ; Cardiopulmonary Bypass* ; Drug Administration Schedule ; Female ; Heart Rate/drug effects ; Humans ; Hypotension/chemically induced ; Intraoperative Complications ; Intraoperative Period ; Male ; Middle Aged ; Mitral Valve/surgery ; Neurotransmitter Agents/blood* ; Phenylephrine/administration & dosage ; Renin-Angiotensin System/drug effects ; Vasoconstrictor Agents/administration & dosage
arterial pressure ; hypotension ; enzymes ; angiotensin converting ; inhibition ; heart ; cardiopulmonary bypass ; hormones ; antidiuretic ; hormones ; rennin
BACKGROUND: Chronic treatment with renin-angiotensin system (RAS) antagonists frequently causes deleterious hypotension during anaesthesia. We compared the effects of angiotensin II receptor antagonists (ARA) and angiotensin-converting enzyme inhibitors (ACEI) on neurohormonal levels and haemodynamics during cardiopulmonary bypass (CPB). METHODS: Forty-four patients undergoing mitral valvular surgery who were treated with either ARA (ARA group, n=14) or ACEI (ACEI group, n=15) over 12 weeks or who were not treated with any RAS antagonist (control group, n=15) were enrolled. The plasma levels of epinephrine, norepinephrine, arginine vasopressin (AVP) and angiotensin II, and haemodynamic variables were measured before (T1) and 15 min after (T2) the start of CPB, before aortic unclamping (T3) and at skin closure (T4). Mean arterial pressure (MAP) was maintained above 60 mm Hg with phenylephrine administration during CPB. RESULTS: The plasma epinephrine, norepinephrine, AVP and angiotensin II levels increased during CPB in all groups. Compared with the control group, the AVP level was lower at T1 in the ARA group and at T2 in the ARA and ACEI groups. The angiotensin II level was higher at T1, T2 and T3 in ARA group compared with ACEI and control groups. There were no significant differences in the epinephrine and norepinephrine levels among the three groups. The amount of administered phenylephrine during CPB was greater and MAP was lower in the ARA group compared with the ACEI and control groups. CONCLUSIONS: Chronic ARA treatment resulted in more profound hypotension than ACEI treatment during CPB, and this may be associated with the blockade of angiotensin II receptors by ARA.
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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
Nam, Sang Beom(남상범) ORCID logo https://orcid.org/0000-0002-9704-1866
Shim, Jae Kwang(심재광) ORCID logo https://orcid.org/0000-0001-9093-9692
Oh, Young Jun(오영준) ORCID logo https://orcid.org/0000-0002-6258-5695
Lee, Jong Wha(이종화)
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