. Diseases of the heart and thoracic aorta. Fig. 164. Fig. 165. Fig. 164.—Early endocarditis of the ao7-tic ; and Fig. idz^, of the mit7-al valve. — [After Green.) c, a, bead-like fringe of vegetations. vegetations on the valves is probably also to some extentdetermined by the distribution of the blood-vessels. Whenthe endocardium, covering the chordae tendineae or walls ofthe heart, is implicated, vegetation may of course also be seenin these situations. At first the vegetations are of small size, and give theaffected portion of the membrane a beaded or roughenedappearance,—as the case progre
. Diseases of the heart and thoracic aorta. Fig. 164. Fig. 165. Fig. 164.—Early endocarditis of the ao7-tic ; and Fig. idz^, of the mit7-al valve. — [After Green.) c, a, bead-like fringe of vegetations. vegetations on the valves is probably also to some extentdetermined by the distribution of the blood-vessels. Whenthe endocardium, covering the chordae tendineae or walls ofthe heart, is implicated, vegetation may of course also be seenin these situations. At first the vegetations are of small size, and give theaffected portion of the membrane a beaded or roughenedappearance,—as the case progresses they may become larger,and sometimes attain to considerable dimensions, forming fun-gating projections which may be sufficiently large to produceconsiderable obstruction of the valvular orifice.^ (See fig. 166.) That mechanical causes exert a very decided influence in determining themaximum position of the inflammation, vegetations, etc., is very clearly seen insome cases of fungating and ulcerative endocarditis,—as Wilks and
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884
