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 . Fig. 12.—Schematic representation of cross-section through forearm and method ofinfiltration from four points (Braun).. Fig. 13.—Method of producing a plane of anesthesia in subcutaneous or other tissues,when injecting beneath a tumor, etc. (Braun). The same plan is followed in anesthetizing a tract for aspirationor exploratory puncture—we will say, for illustr
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 . Fig. 12.—Schematic representation of cross-section through forearm and method ofinfiltration from four points (Braun).. Fig. 13.—Method of producing a plane of anesthesia in subcutaneous or other tissues,when injecting beneath a tumor, etc. (Braun). The same plan is followed in anesthetizing a tract for aspirationor exploratory puncture—we will say, for illustration of the pleuralcavity. This method of procedure is clearly shown in Fig. 14. i8o LOCAL ANESTHESIA In making an injection over a wide area subcutaneously, or inthe deeper planes of tissues, one, two, or more points are first anes-thetized on the overlying skin, and the needle advanced in various Skin . Muscle } Pleura -. ; ? ] Fig. 14.—Method of infiltrating successive planes of tissue for exploratory puncture or aspiration (Braun). directions, continuously injecting as the needle is pushed to deeperdepths, and withdrawing the needle only sufficiently to direct itspoint in another direction, thus avoiding repeated unnecessary punc- /
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