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Can J Anaesth. 1996 Sep;43(9):890-9. doi: 10.1007/BF03011801.

Comparison of sevoflurane/fentanyl and isoflurane/fentanyl during elective coronary artery bypass surgery. Sevoflurane Venture Group.

Canadian journal of anaesthesia = Journal canadien d'anesthesie

N R Searle, R J Martineau, P Conzen, A al-Hasani, L Mark, T Ebert, M Muzi, L R Hodgins

Affiliations

  1. Department of Anaesthesia, Montreal Heart Institute, Quebec, Canada.

PMID: 8874905 DOI: 10.1007/BF03011801

Abstract

PURPOSE: Due to the progressive aging of the surgical population, the proportion of patients with coronary artery disease (CAD) is likely to increase. The effects of the new inhalational anaesthetic sevoflurane must be determined in patients with known CAD.

METHODS: This multicentre, randomized, open-label study compared the haemodynamic and cardiovascular effects of sevoflurane and isoflurane with fentanyl in 284 ASA physical status II-IV patients undergoing elective coronary artery bypass graft (CABG).

RESULTS: Satisfactory records were available in 272 patients, 139 sevoflurane (Group S) and 133 isoflurane (Group I). There were no differences between groups for demographic data except that more patients in Group S were taking preoperative beta-blockers (P = 0.03). The mean end-tidal MAC and MAC.hr requirements between groups were not different (Group S received 0.63 +/- 0.02 MAC and 1.00 +/- 0.05 MAC. hr while Group I received 0.58 +/- 0.02 MAC and 0.92 +/- 0.05 MAC. hr P = NS). The preCPB use of intravenous fentanyl was not different between groups. There was a similar decrease in haemodynamic variables in both groups after induction that persisted throughout the preCPB period. The incidence of preCPB myocardial ischaemia, adverse haemodynamic events and use of vasoactive drugs did not differ between groups. The incidence of postoperative myocardial infarction was 2.2% for Group S and Group I was 4.5% (P = NS). There were five postoperative deaths, one of which was attributed to a cardiac cause (Group I).

CONCLUSION: In patients undergoing elective CABG with low risk factors, either sevoflurane or isoflurane, combined with fentanyl, provided an acceptable preCPB haemodynamic profile and cardiac outcomes.

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