Why the study?
Does increasing the concentration of epidural ropivacaine alter anesthetic properties and motor blockade in patients undergoing lower limb orthopedic surgery?
Population
15 patients scheduled for lower limb orthopedic surgery
Comparison
Epidural ropivacaine at 0.5%, 0.75%, and 1.0%… vs Different concentrations of ropivacaine compared…
Authors
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May support 0.5% ropivacaine to limit motor blockade duration; hypothesis-generating and should not change practice without randomized confirmation.
Does increasing the concentration of epidural ropivacaine alter anesthetic properties and motor blockade in patients undergoing lower limb orthopedic surgery?
Epidural ropivacaine provides satisfactory sensory anesthesia with minimal motor blockade at 0.5%, while higher concentrations result in more profound motor blockade and longer duration of anesthesia.
Concepcion et al. (1990) studied this question.
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