A system of practical medicine. By American authors. Vol. 2

by Unknown

2. By mechanical causes which interfere with the portal circulation.

3. In connection with certain constitutional states, such as gout, rheumatism, phthisis, renal disease, certain eruptive diseases, and as a sequence of malarious fevers.

4. By the excessive use of alcohol and other gastric irritants.

5. By errors of diet, especially excessive alimentation.

6. By decomposition of ingested aliment owing to deficiency of gastric juice.

7. By all causes that weaken the digestive power and lower the general tone of the system.

Of all these causes, errors of diet are most apt to produce it, and to perpetuate it when once established. And next to this, in the order of importance, is the immoderate use of alcohol, especially by persons whose general health and digestive power are below a healthy standard. Such persons are apt to suffer from irritative and inflammatory forms of dyspepsia, which, in various degrees of intensity, alternate with the acuter forms of embarras gastrique.

The injudicious use of drugs may also be mentioned. There can be no doubt that many transient and functional forms of indigestion merge into the more chronic inflammatory forms of dyspepsia from the abuse of stimulants, tonics, and purgatives. Anxious for relief, and urged on by hope of recovery, the victims of functional dyspepsia are apt to have recourse to every grade of quacks and to be subjected to every form of harassing and mischievous treatment. Indeed, the use of potential and irritating drugs, administered for all kinds of ailments, real or imaginary, enters largely into the etiology of chronic gastric catarrh.

Mechanical causes deserve also special consideration. These are mainly such as offer impediment to the return of blood from the stomach to the heart. In acute cases the congestion may be very intense. Congestion of the same kind, but more gradual in its occurrence and less in degree, may be present from all conditions affecting the circulation of venous blood through the liver. General anæmia, by producing weak heart-action, disturbs the normal adjustment between the arterial and venous sides of the circulation. Blood accumulates in the veins and capillaries, and morbid action propagates itself in a direction contrary to the circulation. Hence in all conditions of general anæmia there is tendency to dyspnoea, pulmonary oedema, bronchorrhoea, special forms of liver disease, gastric catarrh, and even temporary albuminuria. All mechanical obstructions to the free transit of blood through the heart, lungs, or liver are followed by the same results. A free secretion of mucus into the stomach is one of the most commonly recognized. It is often vomited in large quantities. This alkaline mucus, while it dilutes the digestive juices of the stomach, furnishes favorable conditions for the development of low micro-organisms, which contribute to the fermentative process. We may not duly estimate the effects of these organisms on a mucous membrane softened by long-continued passive hyperæmia.

Malarious fevers, from their congestive tendency, give rise to the more acute forms of gastro-enteric inflammation. In the more chronic forms of intermittent and remittent fevers more or less gastric inflammation is invariably present. Indeed, in all forms of fever gastric inflammation is a complicating element, and the recognition of the fact has an important bearing on the treatment.