Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice . bone in the direction indicated by thearrow. It is rather unsafe and inadvisable to attempt to reach itfrom in front (except by dissection) on account of the proximity ofthe ulnar vessels, which here lie slightly more superficial than the nerveand slightly to the radial side. Figure 36, VII and VIII, indicatethe extent of the resulting anesthesia after an injec
Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice . bone in the direction indicated by thearrow. It is rather unsafe and inadvisable to attempt to reach itfrom in front (except by dissection) on account of the proximity ofthe ulnar vessels, which here lie slightly more superficial than the nerveand slightly to the radial side. Figure 36, VII and VIII, indicatethe extent of the resulting anesthesia after an injection of i ofa per cent, cocain solution with 3 drops of adrenalin (i : 1000) aspracticed by Braun in the above-mentioned way. It may, however, 248 LOCAL ANESTHESIA be easier and preferable, instead of injecting the nerve at this pointto reach it back of the internal condyle. In thin subjects, wherethe nerve can be readily felt, a paraneural injection may be under-taken by first locating the nerve between the thumb and finger ofone hand while making the injection with the other; the inferiorprofunda artery, which lies in this position, is more deeply situatedin the muscle just over the bone. The following experiments by. Fig. 36.—Resulting areas of anesthesia of hand and fingers from subcutaneous andparaneural injections. (From Braun.) Braun illustrates the result obtained, while Experiment 9 is a para-neural injection of the ulnar and median nerves above the wrist: Experiment 8 (May 13, 1902, Dr. L.). oclock, injection of i of 2 percent, cocain solution in the previously mentioned way. No constriction. Immediatelyparesthesia and sense of warmth as far as the ends of the fourth and fifth fingers. .Aftersix minutes complete regional anesthesia of the skin occurred, as indicated in , I. Sensibility returned fifty minutes after the injection. Experiment 9 (Dec. 9, 1902, medical student). One cubic centimeter of i per cent,cocain solution with 3 drops of
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