The art of anaesthesia . to advantage. It is not necessary that the patientfast. The most satisfactory site of injection is between thethird and the fourth lumbar vertebra? directly in the middleline (Fig. 117). The object of this site of injection is toimmediately engage the ligamentum muscle. This facili-tates the direct entrance into the canal. This point may be found as follows: With the patientsitting up in a slouching posture, draw a line connectingboth iliac crests. This line will cross the spinous processof the fourth lumbar vertebra (Fig. 116). The pointof injection is then just above
The art of anaesthesia . to advantage. It is not necessary that the patientfast. The most satisfactory site of injection is between thethird and the fourth lumbar vertebra? directly in the middleline (Fig. 117). The object of this site of injection is toimmediately engage the ligamentum muscle. This facili-tates the direct entrance into the canal. This point may be found as follows: With the patientsitting up in a slouching posture, draw a line connectingboth iliac crests. This line will cross the spinous processof the fourth lumbar vertebra (Fig. 116). The pointof injection is then just above this line. The site ofinjection having been located, the area is then paintedwith iodine and a slit sheet placed over all. The patientwith the arms folded across the abdomen is instructed tolearn forward bending the neck on the chest. This atti-tude serves to increase the spaces between the spines. Theskin is now sprayed with ethyl chloride and a small nickmade with a scalpel. The cannula with the mandril or stylet 265. Fig. 115.—The relations of the lumbar and dorsal interspaces to the crests of the ilia and lowerribs. (Steel, International Clinics.) THE ADMINISTRATION 267
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
