In 130 surgical patients with diseases and injuries in the area of the perineum and lower extremities the clinical effects of three modern local anesthetics: 2% solution of lidocaine, 0.5% solution of bupivacaine, 0.75% solution of ropivacaine and their combinations (2% lidocaine and 0.25% bupivacaine solution 2% lidocaine and ropivacaine 0.375% solution) were followed with regard to the influence of increasing volumes of local anesthetics and different rates of drug administration. It is established that an effective caudal anesthesia is provided with all modern local anesthetics, with increasing use of local anesthetic solution to 40 ml provides duration and the prevalence of sensory and motor blocks, the use of mixture of local anesthetics optimizes the development and maintenance of the caudal blockade.
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