Masui. The Japanese journal of anesthesiology
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Randomized Controlled Trial Clinical Trial
[Influence of injection speed of the spread of 4.0 ml of 0.5% isobaric bupivacaine in spinal anesthesia].
Influence of injection speed on the spread of isobaric 0.5% bupivacaine 4.0 ml was studied in 100 patients to analyze the correlation between analgesia levels and patient's characteristics. All patients (ASA PS I. II) were scheduled for orthopedic or urological procedures, and received no premedication. ⋯ The maximum sensory block was tested by pinprick method, and no significant difference in the height of sensory block was observed between the two groups. No significant correlation with patient's characteristics was observed except body weight in group 1. This study suggests that the speed of injection does not influence the spread of isobaric 0.5% bupivacaine 4.0 ml.
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We asked 31 anesthesiologists, who were on the Japanese Board of Anesthesiology, about inadvertent injection of drugs into the epidural space, and received answers from 28 (90%). Fifteen (54%) had an experience of inadvertent epidural injection, and five of them had two experiences. ⋯ No treatment was added after the inadvertent injections, except a patient with an epidural steroid injection following thiopental. No neurological complications were found in any patients.