. A text-book of practical therapeutics, with especial reference to the application of remedial measures to disease and their employment upon a rational basis . ty to use the more stable and slowly-acting drugs. These emer-gencies occur in snake poisoning, in syncope from fright or other shockor indigestion, in sudden cardiac failure during the course of feversand in pneumonia, and in all cases where rapid cardiac stimulationis needed. It is claimed, without much justification, that ammoniawill aid in preventing heart-clot or thrombosis in cases of severe hemor-rhage and in pneumonia. In the m
. A text-book of practical therapeutics, with especial reference to the application of remedial measures to disease and their employment upon a rational basis . ty to use the more stable and slowly-acting drugs. These emer-gencies occur in snake poisoning, in syncope from fright or other shockor indigestion, in sudden cardiac failure during the course of feversand in pneumonia, and in all cases where rapid cardiac stimulationis needed. It is claimed, without much justification, that ammoniawill aid in preventing heart-clot or thrombosis in cases of severe hemor-rhage and in pneumonia. In the most pressing cases it should beinjected directly into a vein of the leg, so as to act more put into the subcutaneous tissues, it is almost certain to cause aslough, and if injected into a vein of the arm, it may reach the heartin too concentrated form and cause cardiac depression. Ringer hasfound that the drug has the extraordinary power of causing a heartstopped or depressed by chloroform to resume its beating. In prolonged diseases the employment of ammonia is not particu-larly advisable, owing to its fugacious action, although it is largely. Ammonia stimulates: A, the acceleratornerves; B, the heart-muscle itself, and soquickens pulse-rate and force. It stimu-lates the vasomotor centre C, and therespiratory centre D. AMMONIAC. 79 used, for the frequent administration necessarily required is apt toproduce gastric disorder. Some writers claim that ammonia is usefulas a sedative in drunkenness, but this is doubtful. In gastric acidity due to fermentation, with the development ofabnormal acids, ammonia is the most active remedy we can employ,but it is not to be given if acute irritation of the stomach exists. Locally applied, strong ammonia-water may be used to produce ablister by placing a few drops on the skin under an inverted watch-glass. Ammonia-water may also be applied, often with great relief,to the spot stung by insects. The waters of ammonia are used exter-n
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