. Diseases of the heart and thoracic aorta. Fig. 2-)0.—Sphygmographic tracing from a case of mitral disease, after theadministration of digitalis. The heart was much hypertrophied ; the pulse was intermittent, each of thepulse curves shown in the figure occupies the time of two ordinary cardiacrevolutions. The special characters of the pulse in aortic and mitral lesions are describedon pages 444, 492, 513, and 525. Hypertrophy of the Rig Jit Ventricle. 597 vessels (whether firmly contracted, atheromatous, etc.) ; thetidal wave is usually very prominent, and the systolic portionof the tracing m
. Diseases of the heart and thoracic aorta. Fig. 2-)0.—Sphygmographic tracing from a case of mitral disease, after theadministration of digitalis. The heart was much hypertrophied ; the pulse was intermittent, each of thepulse curves shown in the figure occupies the time of two ordinary cardiacrevolutions. The special characters of the pulse in aortic and mitral lesions are describedon pages 444, 492, 513, and 525. Hypertrophy of the Rig Jit Ventricle. 597 vessels (whether firmly contracted, atheromatous, etc.) ; thetidal wave is usually very prominent, and the systolic portionof the tracing more sustained than normal; in those casesin which the peripheral vessels are not very tightly constrictedthe up-stroke is taller than normal. The tracings shown infigs. 249, 250, and 251, illustrate some of these Pressure 2,% oz. Fig. 251.—Pulse tracing in a case of hypertropJiy of the left ventricle {proi?ably)depending upon cirrhosis of the kidney. HYPERTROPHY OF THE RIGHT VENTRICLE. Etiology.—Hypertrophy of the right ventricle is much morefrequently due to extrinsic than to intrinsic causes, to con-ditions without, rather than within, the right heart.^ More orless dilatation is almost always associated with hypertrophyof the right heart, and in the majority of cases the dilatationis in excess of the hypertrophy. In this respect, therefore,hypertrophy of the right ventricle dififers somewhat fromhypertrophy of the left. Cases are, however, occasionally metwith in which the right ventricle is greatly hypertrophied, andin which there is little or no dilatation. (I have before methe heart of a patient who suffered for many years—fromyouth upwards,—from chronic bronchitis and emphysema ; theright ventricle is enormously hypertrophied, but the cavity isnot dilated.) Cases of this des
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884
