Brazilian Journal of Anesthesiology, 2001; 51: 5: 369-376
Comparative study between 0.5% isobaric bupivacaine and a 0.5% isobaric mixture of 75%
S(-) bupivacaine and 25% R(+) bupivacaine in spinal anesthesia for orthopedic surgery
Luiz Eduardo Imbelloni; Lúcia Beato