Definition.—Pulmonary incompetency is an imperfect closure of the pulmonary orifice of the right ventricle due to changes in the pulmonary valves.
Treatment.—Treat the same as for tricuspid incompetency.
Pulmonary Stenosis.
—Definition.—Pulmonary stenosis is an obstruction of the pulmonary opening of the right ventricle, due to congenital defects or to endocarditis.
Treatment.—Treat the same as for tricuspid incompetency.
Cardiac Thrombosis.
—Definition.—Cardiac thrombosis is the formation of blood clots in the cavities of the heart.
Pathology.—The blood clots are found most frequently in the right side of the heart. They vary in size, from that of a pin head to that of a hen's egg. When degeneration takes place, softening follows, and sometimes particles become dislodged and float off to set up thrombi in other viscera.
Treatment.—Remove the maximum amount of blood by drainage along with the injection of fluid. The fluid in this case should be not more than half strength for the first part of the injection, to be followed by enough normal fluid to secure preservation. If thrombi have lodged in any of the larger arteries, the circulation to the part reached by the branches of the artery will be affected. This can be overcome by injecting an artery close to the part which is not receiving the fluid. Massage the face downward to assist capillary circulation. Give a complete cavity injection. For transportation, govern yourself according to the provisions of the transportation rules.