. Diseases of the heart and thoracic aorta. Fig. -Dicrotic Pulse from a case of Rheitiuatic Fever. Degrees of dicrotism, and tlieir significance. — Variousdegrees of dicrotism occur, to which terms have been ap-plied indicating the relation of what is known as the dicroticnotch to the respiratory line of the tracing (Mahomed).^ Cantos Si(rge?y, vol. i. p. 56. The DicTotic Wave. 255 They may be said to represent the relative condition of theartery at the point where the sphygmograph is apphed, asregards its fulness or state of distention at the commence-ment, and at the termination of the ventr

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. Diseases of the heart and thoracic aorta. Fig. -Dicrotic Pulse from a case of Rheitiuatic Fever. Degrees of dicrotism, and tlieir significance. — Variousdegrees of dicrotism occur, to which terms have been ap-plied indicating the relation of what is known as the dicroticnotch to the respiratory line of the tracing (Mahomed).^ Cantos Si(rge?y, vol. i. p. 56. The DicTotic Wave. 255 They may be said to represent the relative condition of theartery at the point where the sphygmograph is apphed, asregards its fulness or state of distention at the commence-ment, and at the termination of the ventricular systole re-spectively. {a) When the dicrotic wave is well marked, but the aorticnotch C is above the base line A B (see fig. 90), the pulseis called dicrotic. In this condition the artery is more dis-tended at the end of the ventricular systole than it is at Fig. 90.—Dicrotic Pulse. (AfterMahomed.) A B,=base line ; C,=aortic notch.

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884