Figure 3.
The correlation between spinal anesthetic EC50 and product of inhaled MAC and olive oil/gas partition coefficients (MAC × olive oil/gas partition coefficients). Spinal anesthetic EC50 of the four emulsified volatile anesthetics could be predicted by their product of inhaled MAC and their olive oil/gas partition coefficients (R2 = 0.9627, P = 0.013). Spinal anesthesia of volatile anesthetics and their effect of immobility might share common mechanisms.