. Regional anesthesia : its technic and clinical application . Fig. 97.—Field-block for extensive suture of the scalp overlapping the midline: c, d,Front and lateral views. tures of the skull, extirpation of malignant growths, exploration orexcision of intracranial tumors, subtemporal decompression, removal 126 REGIONAL ANESTHESIA of epidural hematoma, and ligation of middle meningeal artery (). The same anesthetic procedures described for sutures of thescalp are used for craniectomies. Tumors of the Cerebellum.—The tissues overlying the occipitalregion and the upper part of the nec
. Regional anesthesia : its technic and clinical application . Fig. 97.—Field-block for extensive suture of the scalp overlapping the midline: c, d,Front and lateral views. tures of the skull, extirpation of malignant growths, exploration orexcision of intracranial tumors, subtemporal decompression, removal 126 REGIONAL ANESTHESIA of epidural hematoma, and ligation of middle meningeal artery (). The same anesthetic procedures described for sutures of thescalp are used for craniectomies. Tumors of the Cerebellum.—The tissues overlying the occipitalregion and the upper part of the neck are anesthetized by circum-ferential infiltration. These parts are supplied by branches given offby the three first cervical nerves, which can be reached by carrying. Fig. 98.—Field-block for subtemporal decompression or ligation of the middlemeningeal artery. Through 1 deep injections are made close to the skull, so as toreach the deep temporal nerves. the injections close to the posterior aspect of the transverse processesof the two first cervical vertebras and to the base of the skull, a littlebackward of the base of the mastoid process. The sensory nervesof the region are the greater occipital, lesser occipital, and posteriorauricular nerves. Figure 101 shows the area for injection, and the most convenientpoints for introducing the needle. Through 1, 2, 4, and 5 deep injec-tions are made close to the base of the skull and the posterior aspect OPERATIONS ON THE HEAD 127
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