. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. here,is subject to a certain range of variations. Some of these, met withby Hartel, are shown in Fig. 194. This information is useful in the following way: If the needle isadvanced from in front through the cheek or mouth, and its pointcarried rather low, meeting the external pterygoid plate, it must beadvanced upward and backward along the smooth surface,
. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. here,is subject to a certain range of variations. Some of these, met withby Hartel, are shown in Fig. 194. This information is useful in the following way: If the needle isadvanced from in front through the cheek or mouth, and its pointcarried rather low, meeting the external pterygoid plate, it must beadvanced upward and backward along the smooth surface, feeling itsway to the foramen; if the point is directed high up, and first meets the THE HEAD, SCALP, CRANIUM, BRAIN, AND FACE 531 under surface of the sphenoid at the base of the pterygoid process, itmust be advanced backward and inward over the bone, and, as thissurface slopes downward, backward, and inward as the needle success-ively feels its way backward, it must be gradually withdrawn in follow-ing the downward slope of the bone. The posterior margin of the foramen is formed by a sharp ridge ofbone, which is directed downward, forward, and outward, runningfrom behind, near the foramen spinosum, forward and inward, to be I c ,1.
Size: 1396px × 1790px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1914
