Articles: nerve-block.
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Superior laryngeal nerve anaesthesia is frequently used to facilitate endotracheal intubation in the awake patient. We have modified the transcutaneous approach to this nerve block to employ a short bevel needle. This improves tactile perception in performing the procedure thus simplifying identification of the correct depth of injection. ⋯ Resistance to the passage of the short bevel needle was provided by the lateral glossoepiglottic fold, not the thyrohyoid membrane as we had expected. Of 40 injections, 39 were deemed successful for a success rate of 97.5%. We conclude that this is a simple and highly successful technique for performing superior laryngeal nerve anaesthesia.
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Comparative Study
Quantitative assessment of differential sensory nerve block after lidocaine spinal anesthesia.
Recent technology allows for quantitative and selective measurement of A beta, A delta, and C fiber nerve transmission. To gain further insight into the physiology of differential block after lidocaine spinal anesthesia, the function of these different fibers was quantitatively measured over time, and these measurements were correlated with regression of anesthesia to pinprick, touch, cold, and tolerance of tetanic electrical current (equivalent to surgical incision). ⋯ Differential sensory block during spinal anesthesia is due to different recovery profiles of A beta, A delta, and C fibers. Return of A beta current perception thresholds to baseline correlated with duration of surgical anesthesia as assessed with an electrical stimulation model.
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Paediatric anaesthesia · Jan 1995
Randomized Controlled Trial Comparative Study Clinical TrialA comparison between ilioinguinal-iliohypogastric nerve block performed by anaesthetist or surgeon for postoperative analgesia following groin surgery in children.
A study was performed to compare postoperative analgesia in children undergoing groin surgery. Patients were randomly allocated to receive ilioinguinal-iliohypogastric (I-I) nerve blocks using 0.25% plain bupivicaine (0.5 ml.kg-1) performed either percutaneously by the anaesthetist after the induction of general anaesthesia, before surgery commenced, or intraoperatively, under direct vision, by the surgeon. ⋯ Statistical analysis of the results revealed no difference in pain score between groups treated either by anaesthetist or surgeon. However, children under two years of age had significantly higher pain scores than those over two.
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A new regimen for postoperative analgesia after thoracic surgery is proposed. Eight children received an interpleural infusion using bupivacaine 0.1% in a regimen from 0.5 ml.kg-1.h-1 up to 1 ml.kg-1.h-1, for 48 h according to the pain scores. The plasma levels after 24 h and 48 h were measured as well as the pleural level and in two patients the free fraction of plasma bupivacaine and the plasma PPX (a metabolite of bupivacaine) and one patient the orosomucoid (main plasma protein involved in bupivacaine protein binding) were also measured pre and postoperatively. The results shows the safety of such a regimen, for two days of postoperative analgesia.
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Reversible functional joint disorders (joint blockages, somatic dysfunction) of the intervertebral and rib joints can be treated using manual therapy, which improves the related segmental changes in both the dorsal and the ventral area [pseudoradicular syndrome, hyperalgesia zone (HAZ)]. This phenomenon is triggered by a decrease in the heightened nociceptor irritation in the joint capsule and in the surrounding tissues. ⋯ From our results we conclude that blocking of the peripheral nociceptors, rather than of the peripheral nerve bundles, is of primary significance for the effective treatment of anterior thoracalgia.