Articles: nerve-block.
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Selective lumbosacral radiculography and block was performed on 106 patients, using 60% Conray or Dimer-X and 1% lidocaine mixed with corticosteroid. The technique of this method is reported, and the radiculographic findings and diagnostic value of this method are discussed. According to our experience, this method is technically simple and very useful in determining the limit of the lumbosacral nerve root lesion, and occasionally can be used to relieve radicular symptoms. We think it is an especially excellent diagnostic technique for disorders featuring nerve root entrapment in the lateral foraminal recess, in which accurate localization cannot be determined by the other auxiliary diagnostic measures.
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The anesthesic fluid is injected close to the intercostal nerve at the starting point of its course in the corresponding space. Its gives an easy analgesia for thoracic or upper abdominal areas.
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An anterior approach to the block of the sciatic nerve is described. The procedure has been applied in over 780 patients. It is quick, simple, safe and free from any serious complications.
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Comparative Study
Experimental evaluation of local anaesthetic solutions using rat infraorbital nerve block.
The analgesic effectiveness of various local anaesthetic solutions was measured in the distribution of the infraorbital nerve of the rat. Using Sprague-Dawley rats sedated with phenobarbitone 25 mg/kg intraperitoneally and a simple stereotactic technique, 0.2 ml of solution was deposited at the infraorbital notch. The onset and duration of analgesia were ascertained by timing the unilateral absence of aversive response to pinching the upper lip, tested at intervals of five minutes. ⋯ Solutions were tested on sets of eight animals weighing 500--600 g. The average duration (minutes +/- S. D.) of analgesia produced by the respective injectates was as follows: Lidocaine 0.5% -42+/-12 Lidocaine 1.0% -47+/-10 Mepivacaine 0.5% -58+/-13 Mepivacaine 1.0% -78+/-23 Procaine 0.5% -0+/-0 Procaine 1.0% -34+/-10 Procaine 1.5% -46+/-13 2-Chloroprocaine 1.5% -38+/-9 Bupivacaine 0.5% -100+/-40 Etidocaine 1.0% -59+/-25 Tetracaine 0.2% -0+/-0 Tetracaine 0.3% -0+/-0 Comparison with other animal models used to evaluate conduction block indicates that this technique affords an improved, standardized and reliable experimental guide to the clinical analgesic properties of local anaesthetic agents.
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Acta Anaesthesiol Belg · Jan 1980
Nerve blocking of the sciatic and femoral nerves. Continual block with vein catheter on 44 patients.
The accessibility of the sciatic nerve from three directions (anterior, lateral and posterior) has prevented many patients from being moved, especially those who would be endangered by a change of position. A vein catheter is introduced in accordance with the approved technique up to the selected point. The stylus is withdrawn, the catheter is fixed on the skin by a suture or adhesive plaster, and by the use of a precisely fitting syringe the chosen local anesthetic solution is perfused. By this technique we can reblock the patient.