The art of anaesthesia . s. Tissues, whose sensitiveness we know to beacute, should be carefully injected before they are touchedwith the knife or sponged (Fig. 114). LEAST SENSITIVE ST SENS|TIVE .5/0/7 pari eta/peritoneumnerves vejse/s periosteum•synovia/mucousmembrane(art/cu/ar Surface) Fig. 114.—Relative sensitiveness of tissues. (Modified from Cunninghams Anatomy. I The skin is everywhere sensitive. The fat, muscles, tendons and fascia where nervetrunks and blood vessels are not included, are insensi-tive. The parietal peritoneum is very sensitive, but the vis-ceral peritoneum is insensiti
The art of anaesthesia . s. Tissues, whose sensitiveness we know to beacute, should be carefully injected before they are touchedwith the knife or sponged (Fig. 114). LEAST SENSITIVE ST SENS|TIVE .5/0/7 pari eta/peritoneumnerves vejse/s periosteum•synovia/mucousmembrane(art/cu/ar Surface) Fig. 114.—Relative sensitiveness of tissues. (Modified from Cunninghams Anatomy. I The skin is everywhere sensitive. The fat, muscles, tendons and fascia where nervetrunks and blood vessels are not included, are insensi-tive. The parietal peritoneum is very sensitive, but the vis-ceral peritoneum is insensitive. Periosteum and synovial membranes are very sensi-tive. Bone and cartilage are not sensitive. The Administration or Conductive or RegionalAnaesthesia.—Conductive anaesthesia implies a preciseknowledge of the distribution of the nerves supplying thepart to be operated on. Permeurial injections are quiteeasily made. The time required for anaesthesia and thestrength of the solution depend upon the size of the nerve. 260 ANESTHESIA to be blocked. Strong solutions .5 to 1 per cent, cocaineare used about large trunks. By the employment of con-ductive anaesthesia, boils or ulcers may be blocked at a dis-tance and the incision or the excision of the same renderedpainless. In endoneural injections the nerve should bedissected out and the needle pointing centrally thrust intoit. The solution is then injected until the nerve the needle rjoints peripherally, pain from traction islikely to occur. Pain is not marked upon injection andthe conductivity is immediately and completely blocked. Healing in Both Conductive and TerminalMethods.—The accidental use of saturated saline solu-tion instead of normal saline has occasioned sloughing ofthe tissues. Some operators have reported delayed unionwhere quinine and urea have been employed. As a rule,however, the healing is rapid and entirely satisfactory. The combined Local and General Anaesthesia Technicof Anoci Association as a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
