Fig. 5. Effects of lipid emulsions on rate-pressure product recovery ratio at 15, 30, 60, 90, and 120 min induced by 20 ml/kg intravenous bupivacaine. Asterisks represent significance of differences between long-chain triglyceride (n = 22) and long- and medium-chain triglyceride (n = 15) groups at 15, 30, and 60 min. **P < 0.01; ***P < 0.001. Data are mean and error bars SD. LCT = long-chain triglyceride; MCT = medium-chain triglyceride; RPP = rate-pressure product.