Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Randomized Controlled Trial
Sympathectomy-mediated vasodilatation: a randomized concentration ranging study of epidural bupivacaine.
We tested the hypothesis that the development of sympathectomy-mediated vasodilatation is dependent on the concentration rather than the dose of epidural local anesthetic administered. ⋯ Our observations suggest that drug concentration is more important than drug dose in determining the degree of sympathectomy following lumbar epidural local anesthesia.