As the result of irritation at calving or by the withered cord, or by licking with the rough tongue of the cow, inflammation may attack the loose connective tissue of the navel to the exclusion of the urachus and veins, and go on to the formation of matter. In this case a firm swelling appears as large as the fist, which softens in the center and may finally burst and discharge. The opening, however, is usually small and may close prematurely, so that abscess after abscess is formed. It is distinguished from hernia by the fact that it can not be returned into the abdomen, and from inflammations of the veins and urachus by the absence of swellings forward and backward along the lines of these canals.
Treatment consists in an early opening of the abscess by a free incision and the injection twice a day of an astringent antiseptic (chlorid of zinc one-half dram, water 1 pint).
INFLAMMATION OF THE NAVEL VEINS (UMBILICAL PHLEBITIS).
In this affection of the navel the inflammation may start directly from mechanical injury, as in either of the two forms just described, but on this are inoculated infective microbes, derived from a retained and putrefying afterbirth, an abortion, a metritis, a fetid discharge from the womb, an unhealthy open sore, a case of erysipelas, from overcrowding, from filthy floor or bedding, or from an offensive accumulation of manure, solid or liquid. As the microbes vary in different cases, given outbreaks will differ materially in their nature. One is erysipelatoid; another purulent infection with the tendency to secondary abscesses in the joints, liver, lungs, etc.; another is from a septic germ and is associated with fetid discharge from the navel and general putrid blood poisoning. In estimating the causes of the disease we must not omit debility of the calf when the mother has been underfed or badly housed or when either she or the fetus has been diseased.
Symptoms.—The symptoms vary. With the chain-form germs (streptococci) the navel becomes intensely red, with a very firm, painful swelling, ending abruptly at the edges in sound skin and extending forward along the umbilical veins. The secondary diseases are circumscribed, black engorgements (infarctions) or abscesses of the liver, lungs, kidneys, bowels, or other internal organs, and sometimes disease of the joints.
With the ordinary pus-producing germs (Staphylococcus pyogenes aureus and Streptococcus pyogenes) the local inflammation in the navel causes a hot, painful swelling, which rapidly advances to the formation of matter (pus), and the raw, exposed surface, at first bright red, becomes dark red or black, soft, friable, and pultaceous. If the pus is white, creamy, and comparatively inoffensive in odor, the secondary formations in internal organs and joints are mainly of the same purulent character (secondary abscesses).
If, on the other hand, the discharge is very offensive and the pus more serous, watery, or bloody, there is reason to suspect the presence of some of the septic bacteria, and the results on the general system are a high fever and softening of the liver and spleen and no tendency to abscesses of the internal organs. Diarrhea is a common symptom, and death ensues early, the blood after death being found unclotted.
Complicated cases are common, and in all alike the umbilical veins usually remain open and can be explored by a probe passed at first upward and then forward toward the liver.
Prevention is sought by applying a lotion of carbolic acid or iodin solution to the navel string at birth, or it may be smeared with common wood tar, which is at once antiseptic and a protective covering against germs. In the absence of either a strong decoction of oak bark may be used.
Local treatment consists in the application of antiseptic to the surface and their injection into the vein. As a lotion carbolic acid, 1 ounce in a quart of strong decoction of oak bark, should be used, or salicylic acid or salol may be sprinkled on the surface. The interior of the vein should be swabbed out with a probe wrapped around with cotton wool and dipped in boracic salicylic acid.