A text-book of practical therapeutics . ) of ethyl chloride are usually sufficient to produce an anesthesialasting from five to ten minutes. Larger amounts than this may beemployed when a longer anesthesia is desired. It is a noteworthyfact that the pupillary and corneal reflexes are not lost under itsinfluence except in children, and that this drug cannot be used asan anesthetic when muscular relaxation is indispensable. After themask is removed the patient rapidly recovers consciousness and oftenexperiences no unpleasant symptoms, although vomiting may occurin some cases. It is, so far as
A text-book of practical therapeutics . ) of ethyl chloride are usually sufficient to produce an anesthesialasting from five to ten minutes. Larger amounts than this may beemployed when a longer anesthesia is desired. It is a noteworthyfact that the pupillary and corneal reflexes are not lost under itsinfluence except in children, and that this drug cannot be used asan anesthetic when muscular relaxation is indispensable. After themask is removed the patient rapidly recovers consciousness and oftenexperiences no unpleasant symptoms, although vomiting may occurin some cases. It is, so far as is yet determined, a fairly safe anes-thetic, but it must be used with care. Thedeath-rate under its use is below that of chloro-form. In 2550 cases recorded by Lotheisen 1death occurred under its effects, but this mayhave been due to organic disease of the coronary m--:- \ wSL ^ m iUe 4C ill— |pp— -3( fk= -2( ;~:- #= -K -A Fig. 48.—The capunscrews and the drugescapes as a fine spray-through a small hole inthe end of the Fig. 49.—Showing use of a glass funnel as an inhaler forethyl chloride. arteries, which was present. Seitz has collected 1600 cases with 1death due to disease of the coronary arteries. Miller has collected43,796 cases with 5 deaths, or 1 in 8759 anesthesias. Ethyl chloride is often used to produce primary anesthesia beforegiving ether or chloroform. (See Chloroform.) Chloride of ethyl is contraindicated if there is any obstruction inthe air-passages, upper or lower. Serious valvular disease of theheart or myocardial degeneration also contraindicate it, and ether isprobably safer under these conditions. If cyanosis develops duringits use the drug must be withdrawn at once. It is noteworthy thatalarming symptoms when they occur develop with great rapidity. EUCAINE HYDROCHLORIDE AND LACTATE 287 The dose varies from 2 to 3 cc in a child to 4 or 5 cc for aman. The drug should not be pushed too freely at first and thepatient should not be deprived of
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