[Subarachnoid blockade with ropivacaine versus bupivacaine in urologic and orthopedic surgery].

Objective: To compare the effects of intrathecal isobaric ropivacaine (IR) versus isobaric bupivacaine (IB) in a dose ratio of 3:2 in non-ambulatory urologic and orthopedic surgery.

Methods: One hundred and seventeen patients scheduled for surgery were randomized and assigned in a double-blind fashion to receive either 15 mg of IR (n = 58) or 10 mg of IB (n = 59) into the subarachnoid space.

Results: There were no differences about age, sex distribution, body mass index, type of surgical interventions and operative time.