. A practical treatise on medical diagnosis for students and physicians . THE HEART. Enlargement of the heart is due to hypertrophy or to dilatation. Inhypertrophy there is increased thickness of the muscular walls. This ma)rbe general or limited to the walls of one chamber. Hypertrophy isfurther divided into simple hypertrophy, in which the cavity or cavitiesare of normal size, and eccentric hypertrophy, in which, with increase inthe wall, there is enlargement of the cavities. This is hypertrophy withdilatation. The left ventricle is most frequently the seat of hyper-trophy when one chamber i
. A practical treatise on medical diagnosis for students and physicians . THE HEART. Enlargement of the heart is due to hypertrophy or to dilatation. Inhypertrophy there is increased thickness of the muscular walls. This ma)rbe general or limited to the walls of one chamber. Hypertrophy isfurther divided into simple hypertrophy, in which the cavity or cavitiesare of normal size, and eccentric hypertrophy, in which, with increase inthe wall, there is enlargement of the cavities. This is hypertrophy withdilatation. The left ventricle is most frequently the seat of hyper-trophy when one chamber is involved. The cause of hypertrophy isobstruction to the flow of blood; increased work is followed by increasedsize of the muscle. General hypertrophy occurs from over-action, from diseases of theheart itself, or from affections of the bloodvessels. A. Diseases of the Heart. 1. Disease of the aortic valves. 2. Peri-cardial adhesions. 3. Myocarditis of the fibrous variety. 4. Neuroseswith over-action and frequent palpitation, as in exophthalmic goitre and PLATE Pulmonary Insufficiency.
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