. Diseases of the heart and thoracic aorta. Fig. so.—Outline figure showing point of differential maximum intensity!*)of the presystolic mitral murmur (mitral stenosis); and the direction in which it ispropagated. (The murmur is often best heard a little above and internal to theapex-beat, which in the diagram corresponds to the star.*) Aortic regurgitant {diastolic) murmurs are carried down-wards by the blood current which produces them, towardsthe apex of the heart ; but in consequence of the fact thatthe sternum is such a good conductor of sound, these These writers say that the murmur is n
. Diseases of the heart and thoracic aorta. Fig. so.—Outline figure showing point of differential maximum intensity!*)of the presystolic mitral murmur (mitral stenosis); and the direction in which it ispropagated. (The murmur is often best heard a little above and internal to theapex-beat, which in the diagram corresponds to the star.*) Aortic regurgitant {diastolic) murmurs are carried down-wards by the blood current which produces them, towardsthe apex of the heart ; but in consequence of the fact thatthe sternum is such a good conductor of sound, these These writers say that the murmur is not heard exactly over the pulmonaryarea, but a little outside it, viz., at a spot an inch and a half outside the sternum,in the third interspace, just at that spot at which the tip of the left auricularappendix comes forward from beneath the cover of the pulmonary artery. 184 Diseases of the Heart. murmurs are well conducted down that bone, and are oftenheard very distinctly at the xiphoid cartilage, as representedin fig. Fir,. 51.—Outline figure showing point of differential maximum intensity (*)of the diastolic murmur (aortic regurgitation) ; and the direction in which it ispropagated. Aortic direct {systolic) inurvnirs are carried upwards overthe course of the aorta, and the great branches which arisefrom it. Organic murmurs are more extensively carried inthese directions than functional, anaemic murmurs. (See fig- 52.) Pulmonary regurgitant (diastolic) nmrnncrs are so ex-tremely rare, that for practical purposes they may be almostignored, they are propagated downwards towards the lowerend of the sternum. Pulnionaiy direct {systolic) niurniurs, which, when organic,are extremely rare, are propagated upwards and outwards,over the course of the pulmonary artery. As a rule theycannot be traced for any distance over the surlace of thechest. (See fig. 53.) Direction of propagation of Murninrs. 1^5
Size: 1369px × 1825px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884
