. Anaesthetics : their uses and administration. eflex remains keen and the corneal reflexis returning. In deep narcosis, that is short of overdosage,the lid reflex is quite abolished, the pupil may be semi-dilated, the ocular movements sluggish and the light reflexslow. Fixation of the eyeball seldom, if ever, occurs in ethernarcosis unless the ether is administered with oxygen, as inthat case the depth of the narcosis may be very profound. ISO ANESTHETICS. The respiration is often hurried in light but slower and moreshallow in deep narcosis while the breathing is gasping. Theruddiness of earl
. Anaesthetics : their uses and administration. eflex remains keen and the corneal reflexis returning. In deep narcosis, that is short of overdosage,the lid reflex is quite abolished, the pupil may be semi-dilated, the ocular movements sluggish and the light reflexslow. Fixation of the eyeball seldom, if ever, occurs in ethernarcosis unless the ether is administered with oxygen, as inthat case the depth of the narcosis may be very profound. ISO ANESTHETICS. The respiration is often hurried in light but slower and moreshallow in deep narcosis while the breathing is gasping. Theruddiness of early etherisation gives place to pallor withslight duskiness after prolonged or profound advent of returning consciousness is commonly shownby the patients efforts at swallowing, the initial act of thephysiological mechanism of vomiting ; by return of con-junctival reflex and by alteration in respiratory also pallor with sudden pupillary dilatation mayoccur. In all cases it must be remembered that the dilatation. Fig. 25.—Sheppards angular adjuster. of the pupils, variations in respiration, and circulation, maybe reflex and must not be mistaken for ether effects. It isthis fact which convinces me that students should avoidconsulting the pupil in ether narcosis until they have acquireda thorough mastery of the cycle of ether narcosis as awhole. When it becomes necessary to anaesthetise the patientin the prone or semiprone posture, a useful addition to theClovers regulating ether inhaler is the angular adjusterfigured above. This useful contrivance is the invention ofthe late Dr. Charles Sheppard-(see fig. 25). This inhaler was intended by Mr. Clover for the admin- ETHER. 151 istration ,of ether alone, but it has been adapted for theexhibition of that vapour in conjunction with nitrous oxidegas, and Mr. Clover himself, writing in 1877, says, byconnecting the bag with a supply of nitrous oxide it formsa tolerably efficient substitute for the gas a
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