. Diseases of the heart and thoracic aorta. icially distended with fluid, isshown ; in fig. 159, the appearance which the sac may presentwhen greatly distended in disease. In fig. 160, the character-istic pear-shaped outline, which the dulness presents, is wellseen. Some recent writers differ from the usually received opinion, that theform of the area of cardiac dulness is characteristic of pericardial Dr Rotch, in the Supplement to Ziemssens Cyclopcedia of the Prac-tice of Medicine, page 363, says, Bauers opinion, that the triangular shapeof the area of dulness depends upon the
. Diseases of the heart and thoracic aorta. icially distended with fluid, isshown ; in fig. 159, the appearance which the sac may presentwhen greatly distended in disease. In fig. 160, the character-istic pear-shaped outline, which the dulness presents, is wellseen. Some recent writers differ from the usually received opinion, that theform of the area of cardiac dulness is characteristic of pericardial Dr Rotch, in the Supplement to Ziemssens Cyclopcedia of the Prac-tice of Medicine, page 363, says, Bauers opinion, that the triangular shapeof the area of dulness depends upon the shape of the pericardial sac, hasnot been substantiated by later observations, the theory of Duchek havingbeen found to be more correct, namely that in cases uncomplicated by 320 Diseases of the Heart. pleuritic adhesions it is the retraction of the edges of the lungs whichdetermines the shape of the absolutely dull area and that therefore theso-called triangular figure can be produced by an enlarged heart as wellas a pericardial Fig. 158. Fig. 159. Fig. 158.—Pericardium distended into fifteen ounces of fluid. (After Sibson.)Fig. 159.—Case of pericarditis in w/iick the sac contained 3^ lbs. of fluid. Altered Position of the Heart and Apex effusion at first collects at the sides of the heart, atthe bottom of the pericardial sac, and around the great Physical Signs of Ac2iie Pericarditis. ;2i
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884
