. Dental materia medica, therapeutics and prescription writing. ions. Aside from their function of repairing tis-sues, they have the power to destroy bacteria in the blood (phagocytosis)and thus they form a very important part of the body defenses. Inthis relation they are called phagocytes. PART REMEDIES. CHAPTER V. DEPLETIVES. Depletive measures are those employed to abstract blood or serumfrom an inflamed or hjqDeremic area, usually with the purpose of reliev-ing pain or pressure. The indications for their use are: 1. Inflammation that is painful or that threatens extension or dest
. Dental materia medica, therapeutics and prescription writing. ions. Aside from their function of repairing tis-sues, they have the power to destroy bacteria in the blood (phagocytosis)and thus they form a very important part of the body defenses. Inthis relation they are called phagocytes. PART REMEDIES. CHAPTER V. DEPLETIVES. Depletive measures are those employed to abstract blood or serumfrom an inflamed or hjqDeremic area, usually with the purpose of reliev-ing pain or pressure. The indications for their use are: 1. Inflammation that is painful or that threatens extension or destruc-tion of tissue. 2. Passive congestion of a part that interferes with its function orwith resolution of disease. .3. Simple hjperemia, when its continuance is likely to produce seriousdisturbance of tissue or function. 4. In local poisoning of tissues, as from the bite of an animal, orfrom local absorption of arsenic. i^ ^^4 ^ A depletive measm-e need not always remove blood or serum from thebody. It may draw it from the point of disease into another Fig. 1.—Dry cups applied to the chest, as in a case of puhnonar} edema, the earlystages of pneumonia, or diffuse bronchitis. (Hare.) Dry Cupping consists in the application, to the surface of the skin, ofglass cups from which the air has been exhausted. An alcohol flame 56 DEPLETIVES passed quickly into the cup immediately before applying, is the meanscommonly employed to exhaust the air. The vaciuun permits the skinand underlying tissue to bulge into the glass and to become congestedwith blood. In this way, with each cup nearly or quite a tablespoonfulof fluid may be drawn from deeper tissues to the skin and just beneathit. With the emplo\-ment of a number of cups a very decided influenceupon a deeper-lying inflammation is noticed, but no fluid is removed fromthe body. This method is of great value in conditions of pulmonarycongestion or pneimionia, and a number of cups may be applied, andrepeatedly, to the surface of
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