The art of anaesthesia . Fig. 115.—The relations of the lumbar and dorsal interspaces to the crests of the ilia and lowerribs. (Steel, International Clinics.) THE ADMINISTRATION 267. Fia. 116.—Localization of the spinal interspaces. With the patient bent forward, a towel stretchedbetween the iliac crests passes through the spine of the fourth lumbar vertebra. The first lumbar in-terspace is opposite the tip of the last rib. (Steel, International Clinics.) 268 ANAESTHESIA in place is then inserted. The needle is directed forwardand inward. One feels a sense of resistance followed by asudden pop
The art of anaesthesia . Fig. 115.—The relations of the lumbar and dorsal interspaces to the crests of the ilia and lowerribs. (Steel, International Clinics.) THE ADMINISTRATION 267. Fia. 116.—Localization of the spinal interspaces. With the patient bent forward, a towel stretchedbetween the iliac crests passes through the spine of the fourth lumbar vertebra. The first lumbar in-terspace is opposite the tip of the last rib. (Steel, International Clinics.) 268 ANAESTHESIA in place is then inserted. The needle is directed forwardand inward. One feels a sense of resistance followed by asudden pop as the needle enters the canal. The mandrilshould then be withdrawn. If the needle is in the canalfluid will escape. If no fluid escapes one should replacethe mandril again, insert and withdraw until, upon thepartial withdrawal of the mandril, fluid escapes. Ten orfifteen drops of cerebrospinal fluid may be permitted toescape out of the end of the cannula. The syringe, loadedwith the solution, novocaine or tropacocaine, is thenattached and a little of the cerebrospinal fluid is with-drawn (Fig. 119). The syringe with the mixture is thendetached to see that the needle is st
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
