A text-book of practical therapeutics . ications for the use ofammonia in the first class of casesare all forms of sudden cardiacfailure where there is no time oropportunity to use the more stableand slowly acting drugs. Theseemergencies occur in snake poison-ing, in syncope from fright or othershock, or from indigestion, in suddencardiac failure during the courseof fevers and in pneumonia, and in all cases where prompt cardiacstimulation is needed. In the most pressing cases it should beinjected directly into a vein of the leg, so as to act more quickly. Ifput into the subcutaneous tissues, i
A text-book of practical therapeutics . ications for the use ofammonia in the first class of casesare all forms of sudden cardiacfailure where there is no time oropportunity to use the more stableand slowly acting drugs. Theseemergencies occur in snake poison-ing, in syncope from fright or othershock, or from indigestion, in suddencardiac failure during the courseof fevers and in pneumonia, and in all cases where prompt cardiacstimulation is needed. In the most pressing cases it should beinjected directly into a vein of the leg, so as to act more quickly. Ifput 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. It isclaimed, without much justification, that ammonia will aid in pre-venting heart-clot or thrombosis in cases of severe hemorrhage and Fig. 7. — Ammonia stimulates: A,the accelerator nerves; B, the heart-muscle itself, and so quickens pulse-rate and force. It stimulates the vaso-motor center C and the respiratorycenter D. AMMONIUM 95 In prolonged diseases the employment of ammonia is not particu-larly advisable, owing to its fugacious action, although it is largelyused, 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 spots stung by insects. The waters of
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttherape, bookyear1922
