Effect of thiopentone, etomidate and propofol on systemic vascular resistance during cardiopulmonary bypass.
prospective_cohort · Level II
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Abstract
We have studied the effect of thiopentone, etomidate and propofol on systemic vascular resistance (SVR) during cardiopulmonary bypass with constant pump flow in 30 patients undergoing elective coronary artery bypass surgery. SVR decreased to 78% of control values after thiopentone 4 mg kg-1, to 72% of control after etomidate 0.3 mg kg-1, and to 68% of control after propofol 2 mg kg-1; it returned to control values 10 min after administration of thiopentone and propofol and 7 min after administration of etomidate. Analysis of variance showed that there were no significant differences in the changes in SVR between the groups.
Medical subject headings
- Anesthesia, Intravenous
- Cardiopulmonary Bypass
- Etomidate
- Propofol
- Thiopental
- Vascular Resistance