. Regional anesthesia : its technic and clinical application . ig. 48.—Maxillary block by the oral route (1). the needle inserted in the mucous reflection above the first uppermolar tooth. The needle is then advanced in a direction backward,upward, and inward, tangent to the tuberosity of the maxilla, andmaking with the sagittal plane of the head an angle of about 40 point of the needle loses contact with the bony surface at a dis-tance of from 3 to 4 cm. from its point of entrance. It is thenintroduced cm. further, and injection of 2 of the 2 per cent,solution made slowly
. Regional anesthesia : its technic and clinical application . ig. 48.—Maxillary block by the oral route (1). the needle inserted in the mucous reflection above the first uppermolar tooth. The needle is then advanced in a direction backward,upward, and inward, tangent to the tuberosity of the maxilla, andmaking with the sagittal plane of the head an angle of about 40 point of the needle loses contact with the bony surface at a dis-tance of from 3 to 4 cm. from its point of entrance. It is thenintroduced cm. further, and injection of 2 of the 2 per cent,solution made slowly (Figs. 48 and 49). BLOCKING OF CRANIAL NERVES 79 2. With a needle bent to an angle of 145 degrees, or with a straightneedle connected with the syringe by a curved adjustment, the maxil-lary nerve may be blocked by introducing the needle behind the lastupper molar tooth and directing it upward and a little inward, almostperpendicularly to the triturating surface of the teeth (Fig. 50). Theneedle passes laterally in the angle formed by the tuberosity of the. Fig. 49.—Maxillary block by the oral route (1). Direction of needle (a) in relationto skeleton. maxilla and the pterygoid process and at a depth of from to4 cm. reaches the sphenomaxillary fossa, where 2 of the 2 per cent,solution are injected slowly. Paresthesias obtained in the territory of the palatine nerves indi-cate that the point of the needle is in the correct direction. Injectionmay then be started while the needle is advanced about cm. further,in the same direction, toward the maxUlary nerve. The palatine gang- REGIONAL ANESTHESIA lion may be blocked the same way, although it will not be necessary togo deeper than 3 cm. from the site of puncture.
Size: 1623px × 1538px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidregionalanes, bookyear1922
