British Journal of Anaesthesia, Vol 81, Issue 3 358-360, Copyright © 1998 by The Board of Management and Trustees of the British Journal of Anaesthesia
A. Fassoulaki, M. Zotou and C. Sarantopoulos
We have investigated the effect of infusion of nimodipine on the spread of
spinal anaesthesia in 50 patients undergoing transurethral procedures.
Patients were allocated randomly to receive during operation continuous
infusion of nimodipine 10 ml h-1 (group N, n = 25) or normal saline (group
C, n = 25) in a double-blind manner. All patients received hyperbaric
lidocaine 100 mg (5% in 8% dextrose) intrathecally and were then placed in
the lithotomy position. Twenty minutes after intrathecal injection the
level of spinal anaesthesia was tested with a pressure palpator and a
baseline was established. Assessments were repeated 5, 10 and 15 min
thereafter. Five minutes after establishing baseline, mean regression of
sensory analgesia did not differ between groups. Analgesia had regressed by
1.3 (SD 1.4) and 1.0 (1.9) cm, respectively. After 10 min, sensory block in
group N regressed by 1.7 (1.7) cm and in group C by 1.5 (1.6) cm. After 15
min these values were 1.1 (1.7) cm and 2.2 (1.9) cm, respectively (P <
0.035). Similar results were found after normalizing the changes by
dividing the change by patient height.
CLINICAL INVESTIGATIONS
Effect of nimodipine on regression of spinal analgesia
Department of Anaesthesia, St Savas Hospital, 171 Alexandras Ave, 11522 Athens, Greece
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