. Diseases of the heart and thoracic aorta. Pressure 3| oz. Fig. ^b.^Trre^nlarity of the Pulse.—^. M., aet. 50, admitted to NewcastleInfirmarj- 30th November 1878, suffering from the usual symptoms ofmitral disease. The hearts action was extremely irregular The leftventricle much hypertrophied. There was no rheumatic history. Thesymptoms were of two months duration. I have attennpted in figs. 57, 58 to represent in a diagram-matic manner, the backward effects which mitral lesionsproduce on the heart and Fig. 57.—Representation of the eftects of a lesion of the mitral valve (mitra


. Diseases of the heart and thoracic aorta. Pressure 3| oz. Fig. ^b.^Trre^nlarity of the Pulse.—^. M., aet. 50, admitted to NewcastleInfirmarj- 30th November 1878, suffering from the usual symptoms ofmitral disease. The hearts action was extremely irregular The leftventricle much hypertrophied. There was no rheumatic history. Thesymptoms were of two months duration. I have attennpted in figs. 57, 58 to represent in a diagram-matic manner, the backward effects which mitral lesionsproduce on the heart and Fig. 57.—Representation of the eftects of a lesion of the mitral valve (mitralstenosis in this case) on the heart and circulation. The effects of mitralregurgitation are the same, but there is, in addition, hypertrophy of theleft ventricle. LV=left ventricle ; LA = left auricle ; PV=pulmonaryveins; L=Iungs ; PA=pulmonary artery ; RV=right ventricle ; RA=right auricle; V=ven£e cavse ; V^ = venous system; £ = termination ofthe venous system in the systemic capillaries; A=the aorta; Ai = thearterial system. The arrows show the direction of the backward dotted lines show the effects of the obstruction (dilatation) on thedifferent parts. 2l8 Diseases of the Heart.


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884