In a few succeeding pages I give some directions to the nurse who acts under the doctor’s orders.
Ammoniacal liniments, and other washes and embrocations that are sufficiently irritating to produce redness when rubbed on the skin, should be rubbed on briskly so as to produce considerably increased circulation in the capillaries, &c. One of the most commonly used rubefacients is mustard. To make a mustard plaster, or sinapism, take one part of powdered mustard, and about three times the quantity of flour and mix into a paste with tepid water, and spread it evenly between two pieces of thin muslin. As hot water or vinegar weakens the active principle of mustard, tepid water is best, even if it seems cold when applied to the patient. Good sinapisms are conveniently made also by doubling brown paper several thicknesses, wetting it and sprinkling on the mustard alone.
The mustard must not be left on long enough to vesicate; usually it should be taken off within half an hour (or moved,) except when applied to the soles of the feet, when they may commonly be left on for several hours. Their action must be carefully watched upon an insensible or delirious patient, or a little child. In mixing the plaster for children glycerine may be used, and then the plaster may remain on longer. Confine in place by a bandage. If the patient complain of the burning or smarting after the plaster is removed, dust the part with starch or fine flour, or dress with vaseline to exclude the air.
You may make a cayenne pepper plaster in the same way that a mustard plaster is made, or you may sprinkle pepper upon a thin slice of pork. This makes good draughts for children and may be useful sometimes for sore throat if applied to the neck. But capsicum plasters, &c., can be bought at the drug store. In the country it is generally convenient to obtain and apply horse radish leaves; these are good rubefacients. In order to produce immediate VESICATION I have known a doctor to heat an iron spoon until it was sufficiently hot, and then rub it over a small space of skin; and a small blister may be quickly made by saturating a bit of cotton with hartshorn, putting it in a top thimble and applying it to the skin to remain seven or eight minutes. But the agent most commonly used to produce vesication is the CANTHARIDEAL PLASTER. If you are to produce a blister with this, the part should first be washed and dried, shaved if there is any hair upon it, then if you wish the blister to rise soon wet the plaster and also the skin with vinegar; apply, and secure the plaster in place by a bandage. Most commonly it will rise in from four to eight hours, but without waiting for it to rise fully you may remove the plaster and apply a poultice which will produce the desired effect. Do not tear the skin in taking the plaster off. When the blister is well raised make a slight incision or two for the escape of serum, and dress with vaseline or tallow. This is the usual way, but in some cases the physician may direct differently, perhaps may leave the blister undisturbed and allow the fluid to be reabsorbed.
Strangury and congestion of the kidneys sometimes follow the prolonged use of cantharides; to prevent this, it is sometimes recommended that tissue paper be well oiled and interposed between the plaster and skin. And as camphor corrects the action of cantharides upon the bladder, it is recommended that in case of a child particularly, a solution of camphor in ether be sprinkled upon the plaster. If a blister is applied to a young child, it should be carefully watched and not allowed to remain too long. In two or three hours the skin will be well reddened, and the plaster may be removed and a poultice applied.
Tincture of iodine is sometimes applied as a counter irritant, but several coats and repeated applications are necessary to produce a blister.
Local stimulation can be obtained from bits of cantharideal plaster kept on for an hour or two, and removed or changed before the point of vesication is reached. The same effect follows the rapid passage of a hot flat iron over a piece of brown paper or flannel laid upon the skin. It is generally best that the flannel should be wet first; and should an emergency arise when from hemorrhage or some other cause there is danger of immediate collapse, the application of heat in this way may rouse the sufferer and prevent immediate death. This or the actual cautery is sometimes used to relieve lumbago, or rheumatism. If you have thereby a slight burn, you may dress it in a solution of bicarbonate of soda and cover from air with rubber tissue.
If a SETON is inserted in the skin, the silk should be moved daily and the matter well cleared out.
Wet cups are applied to relieve congestion and to abstract blood, the skin being first scarified.
Dry cupping is most practiced for the relief of pain and to draw the blood away from an inflamed organ. Small tumblers may be used in the absence of cupping glasses, if the edges are smooth. When you apply the cups have at hand also a lamp, a saucer of alcohol, a bit of sponge or a wad of lint fastened to the end of a stick. Have the cups perfectly dry, dip the sponge in the alcohol which you will ignite from the lamp, (they being near the patient), and let it burn for an instant in the inverted glass, then withdraw and extinguish it, and rapidly place the cup over the intended spot. As the heated air in the glass condenses in cooling, the skin will be forcibly sucked up, and the blood drawn towards the surface. Each cup will remain on from three to five minutes. Do not attempt to apply them to a bony and irregular surface, and be very careful not to burn the patient by getting the edges of the glass too hot. To remove the cup press with the finger close to the cup so that air will be admitted.