. Anaesthetics : their uses and administration. wheal resulting is again injected at itsperiphery, and this is injected in like manner until a linearzone of skin is rendered oedematous by the fluid injections are made hypodermically, each onebeing made into the wheal and deeply into the subdermicstructures, and when thedeeper structures are to beoperated upon these are alsoinjected. It is advisable towait for some twenty minutes,or longer, between the timeof injection and the perform-ance of the operation. Whenthe structures are cut, muchof the oedema fluid flowsaway, but
. Anaesthetics : their uses and administration. wheal resulting is again injected at itsperiphery, and this is injected in like manner until a linearzone of skin is rendered oedematous by the fluid injections are made hypodermically, each onebeing made into the wheal and deeply into the subdermicstructures, and when thedeeper structures are to beoperated upon these are alsoinjected. It is advisable towait for some twenty minutes,or longer, between the timeof injection and the perform-ance of the operation. Whenthe structures are cut, muchof the oedema fluid flowsaway, but the tissues re-main analgesic for abouttwenty minutes. Repeatedinjections are made as theoperation is in quantities of thesolution may be is usual to scheme theline of injections in such away that all skin areas whichare to be cut are madeanalgesic. The nerves sup-plying them, and the deeperstructures also, are renderedincapable of transmittingpainful impressions by in-jections made into the tissuessurrounding PiG. 80.—Syringe for use in localanalgesia. Tissue Infiltration : Brauns Method. The solution, syringe, and needles are sterilised in plainwater or saline, since soda destroys the analgesic effect: andthe skin is cleansed. A 05 per cent, novocain and adrenine 422 AN/liSTHETICS. solution is employed.* A fine hollow needle is fixed to thesyringe (fig. 8o), and introduced into the deep tissues, carebeing taken to avoid the proximity of blood-vessels. As theneedle is slowly withdrawn the solution is injected so that thesubcutaneous tissues are the last to permeated. Ifthe whole area cannot be reached by deviating the directionof the needle fresh punctures are made in the requireddirection, but always within the area already rendered anal-gesic. It will be found that for practically all areas a schemeof intersecting lines can be made which will intercept thenerves running from the area to the centripedal nerve may be neces
Size: 1067px × 2344px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidanaestheticsthei1914buxt
