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Legend
Table 1. patient characteristic
Table 2. The ED50 and 95% confidence interval (CI) of different models
Figure 1. Sequential block results of ultrasound-guided sciatic nerve
block using ropivacaine 20mL according to the Dixon and Massey
up-and-down method.
Figure 2. Estimated ropivacaine–sciatic nerve block relationship for a
given dose level and probability of successful block. Median estimators
for each model are plotted. The numbers of measurements at each
ropivacaine concentration are represented by numbered triangles.
Figure 3. postoperative pain scores. A: Rest pain score 24 hours after
surgery. B: motor pain score 24 hours after surgery. C: Duration of
sciatic nerve block with different concentrations of ropivacaine. D:
Correlation between ropivacaine concentration and time to 1st rescue
analgesic in sciatic nerve block