[Spinal anesthesia with XXXX for surgery of the hip in the elderly].

@entity1 @entity1341 @entity1337 @entity413
In 60 elderly @entity1 , spinal anaesthesia for orthopaedic hip surgery was induced randomly with 15 mg @entity1341 0.375% without @entity413 (Group I), 2.5% @entity413 (Group II) or 7.5% @entity413 (Group III), in 4 ml. The injection was made in the lateral position, and the @entity1 turned supine immediately after. The onset, extent and duration of sensory and motor blockade, the cardiovascular effects and the quality of anaesthesia were evaluated. The hyperbaric solutions produced a greater cephalad spread of @entity1337 (T8,9 and T9,8 respectively) than the @entity413 -free solution (T10,5). The mean duration of @entity1337 at the L2 level with the isobaric solution was significantly greater: 187 min versus 171 min and 150 min with the hyperbaric solutions. All the @entity1 had complete motor blockade of the lower limb. The mean duration of the motor block was significantly shorter for the 2.5% and 7.5% @entity413 solutions (137 and 125 min respectively for Bromage's degree 3) versus 170 min for the @entity413 -free solution. Although the pre-anaesthetic arterial pressures in the three groups did not differ significantly, the systolic, mean and diastolic arterial pressures decreased only by about 20 to 25% in all groups. It was suggested to take into account the more rapid infusion of lactated Ringer's solution (20 ml X kg-1) in Group III. Anaesthesia was satisfactory in 95% of @entity1 in Group I and Group II, and 90% in Group III. @entity413 -free @entity1341 produced a long-lasting blockade suitable for hip surgery of long duration.
