. A practical treatise on medical diagnosis for students and physicians . in determining the diagnosis. Mitral insufficiency or regurgitation has more serious effect upon thjpulmonic and arterial circulation than any other valvular disease. The?effects must be understood in order to appreciate the symptoms of niitrcincompetence, which are as follows : MITRA L REG UR GIT A T10N. 949 1. With each systolic contraction, on account of the insufficiency ofthe mitral leaflets, the blood flows back to the auricle, where if soonmeets a volume of blood coming from the lungs. The combined volumesof blood
. A practical treatise on medical diagnosis for students and physicians . in determining the diagnosis. Mitral insufficiency or regurgitation has more serious effect upon thjpulmonic and arterial circulation than any other valvular disease. The?effects must be understood in order to appreciate the symptoms of niitrcincompetence, which are as follows : MITRA L REG UR GIT A T10N. 949 1. With each systolic contraction, on account of the insufficiency ofthe mitral leaflets, the blood flows back to the auricle, where if soonmeets a volume of blood coming from the lungs. The combined volumesof blood over-distend the auricle. Dilatation ensues, and because ofincreased work to get rid of the increased contents, hypertrophy hypertrophy of the left auricle is the first effect. 2. As a result of the above, a larger amount of blood is forced fromthe left auricle into the left ventricle; in order to remove the increasedamount of fluid, dilatation and subsequent hypertrophy of this chamberfollow. Fig. 350. Lungs Congested Portal Congestion Gastric Catarrh. SpleenCongested and,Enlarged Hemorrhoids Showing the congestions following valvulitis with failure of compensation. 3. On account of the over-distended auricle the pulmonary veins arenot fully emptied during the diastole of that chamber. The veins aretherefore engorged and interfere with the flow of blood through the pul-monary circuit. In consequence of the impeded flow of blood the vesselsin the pulmonary circuit are dilated and over-distended. The right ven-tricle is compelled to act more vigorously, and even then can not emptyitself freely. Dilatation and hypertrophy of the right ventricle ensue. 4. This condition causes obstruction to the flow7 of the blood from 950 DISEASES OF THE HEART, BLOODVESSELS, ASD MEDIASTINUM. the right auricle to the right ventricle : dilatation and hypertrophy of theright auricle follow. If perfect compensation ensues through hypertrophy of both ventricles,engorgement in the lung
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