The 0.125% ropivacaine group reduced the feeling of pulsation: 26.7% was normal (compared with 10% for the other two groups); reduced the ability of pulsation: 40% was normal (compared to 6.7% for the other two groups); motor block of Bromage grade 1 was 16.7% (compared to 0% in ropivacaine 0.075% and 3.3% in ropivacaine 0.1%).