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  • Title: [Effects of propofol on hepatic venous oxygen saturation--a comparison with isoflurane or sevoflurane anesthesia].
    Author: Fukuda I, Uchihashi Y, Kira M, Ogura T, Shizukuishi M, Kazama T, Sugiura Y.
    Journal: Masui; 2005 Jul; 54(7):736-41. PubMed ID: 16026052.
    Abstract:
    BACKGROUND: We performed a comparative study of propofol versus isoflurane and sevoflurane using continuous monitoring of hepatic venous oxygen saturation (ShvO2) during upper abdominal surgery in 26 patients. METHODS: Anesthesia was induced with propofol 2-2.5 mg x kg(-1) and vecuronium 0.1 mg x kg(-1). Thereafter, Swan Ganz catheters were inserted into the pulmonary artery and hepatic vein. Group P (n=26) patients received continuous propofol infusion and epidural mepivacaine injection for maintenance, while Group I (n=17) received isoflurane and Group S (n=9) received sevoflurane. Systemic oxygen extraction ratio (OERsys) and hepato-splanchnic oxygen extraction ratio (OERspl) were calculated. RESULTS: Heart rate, mean arterial pressure and cardiac index were unchanged after propofol infusion, and isoflurane or sevoflurane inhalation. Propofol at 8 and 10 mg x kg(-1) x h(-1) significantly decreased ShvO2 and increased OERspl, although isoflurane and sevoflurane did not change them. Mixed venous saturation and OERsys were within normal ranges during the studies. CONCLUSIONS: The results suggest that propofol increases the metabolism and oxygen consumption in the liver.
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