Regional-Anaesthesie
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Regional-Anaesthesie · Sep 1990
Randomized Controlled Trial Comparative Study Clinical Trial[The effect of barbotage on the sensory spread in spinal anesthesia using isobaric and hyperbaric 0.5% bupivacaine].
The effect of spinal anesthesia with barbotage versus without barbotage on the spread of analgesia was investigated. For comparison, hyper- and isobaric bupivacaine 0.5% with adrenaline 1:200,000 was used. MATERIAL AND METHODS. ⋯ Sufficient analgesia was obtained with barbotage and without barbotage. Uncontrolled cephalad spread of spinal anesthesia was not observed. Barbotage has the advantage of shortening time for spread to highest dermatome and the time to onset of complete motor block.
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Regional-Anaesthesie · Sep 1990
Randomized Controlled Trial Clinical Trial[The effect of volume and dosage of isobaric bupivacaine on the sensory spread of spinal anesthesia].
There is some controversy about the relationship of volume, concentration and total dose of bupivacaine in the sensory spread of spinal anesthesia. In this study the effects of volume and dose were investigated. MATERIAL AND METHODS. ⋯ Earlier studies on the effects of changes in volume, concentration and dose of bupivacaine showed similar "jumps of blockade" between 2 ml and 3 ml injected volume. Assembling the results the relation between volume and total dose does not suggest a no linear dependence. The anatomic configuration of the spinal cord at the conus medullaris may affect the distribution of the solution.
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Regional-Anaesthesie · Sep 1990
Randomized Controlled Trial Clinical Trial[No effect of injection volume on sensory and motor blockade in isobaric spinal anesthesia].
The authors were interested to find whether the course of sensory and motor blockade in isobaric spinal anesthesia was determined by the dose or the volume of the anesthetic agent. In a randomized double-blind study in 60 patients, each underwent isobaric spinal anesthesia with 17.5 mg bupivacaine. In three groups of 20 patients, this dose was administered as 3.5 mg bupivacaine 0.5%, 7 ml bupivacaine 0.25% or 10 ml bupivacaine 0.175%. ⋯ The rate of development, the maximal spread or intensity, and the regression of sensory and motor blockade did not differ in the three groups. The only difference was that the complete regression was shorter following 10 ml bupivacaine 0.175% (P less than 0.05). It is therefore concluded that the dose, and not the volume, determines the course of sensory and motor blockade of isobaric spinal anesthesia.