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Updated: June 8, 2025
This may not be due to narrowing of the aortic orifice; it may be due to a sclerosis of the aorta. On the other hand, it may be due entirely to the hastened blood stream from the nervous excitability. This is probably the case if this sound disappears when the patient reclines. If it increases when the heart becomes slower and the patient is lying down, the cause is probably organic. Jour.
It should be remembered that the diastolic pressure represents the pressure which the left ventricle must overcome before the blood will begin to circulate, that is, before the aortic valve opens, while the pressure pulse represents the power of the left ventricle in excess of the diastolic pressure.
There were no other lesions except a small sacral bed-sore, a small fibromyoma of the uterine fundus, small slightly cystic ovaries, a slight dural thickening, and possibly a slight general cerebral atrophy. Patient was a Protestant iron-worker of 59 years, who had lost an eye and had become unable to work about three months before death. Aortic, cardiac, renal lesions at autopsy.
A man that knows men, in the street, at their work, human nature in its shirt-sleeves, who makes bargains with deacons, instead of talking over texts with them, a man who has found out that there are plenty of praying rogues and swearing saints in the world, above all, who has found out, by living into the pith and core of life, that all of the Deity which can be folded up between the sheets of any human book is to the Deity of the firmament, of the strata, of the hot aortic flood of throbbing human life, of this infinite, instantaneous consciousness in which the soul's being consists, an incandescent point in the filament connecting the negative pole of a past eternity with the positive pole of an eternity that is to come, that all of the Deity which any human book can hold is to this larger Deity of the working battery of the universe only as the films in a book of gold-leaf are to the broad seams and curdled lumps of ore that lie in unsunned mines and virgin placers, Oh!
Previously all the blood went from the auricle through the aortic arches into the gills, but now only part of it goes to the gills, the other part passing to the lungs through the new-formed pulmonary artery. From this point arterial blood returns to the left auricle of the heart, while the venous blood gathers in the right auricle.
In the Selachii an arterial cone is developed from the foremost end of the ventricle, as a special division, cut off by valves. On each side 5 to 7 arteries proceed from it. The junctures of the various aortic arches on the right and left are called the roots of the aorta.
As long as the circulation in the heart itself is good and not impaired by coronary sclerosis, and as long as this slowly developing chronic myocarditis has not advanced far, cardiac symptoms will not be in evidence; but if these conditions occur, or if the blood pressure is so greatly increased as to damage the aortic valve or strain and dilate the left ventricle, symptoms rapidly appear, and the heart must be carefully watched.
The first effect of this narrowing is to cause hypertrophy of the left ventricle, and as long as this ventricle is able to force the blood through the narrowed opening at the aortic valve, the general circulation is perfect. Nature again steps in to cause such a heart to heat deliberately, allowing time for the contracting ventricle to force the blood through the narrowed orifice.
In the silence of the room I could hear a dull humming and buzzing noise which proceeded from the same source. "Why," I cried, "you have an aortic aneurism!" "That's what they call it," he said, placidly. "I went to a Doctor last week about it, and he told me that it is bound to burst before many days passed. It has been getting worse for years.
A man that knows men, in the street, at their work, human nature in its shirt-sleeves, who makes bargains with deacons, instead of talking over texts with them, a man who has found out that there are plenty of praying rogues and swearing saints in the world, above all, who has found out, by living into the pith and core of life, that all of the Deity which can be folded up between the sheets of any human book is to the Deity of the firmament, of the strata, of the hot aortic flood of throbbing human life, of this infinite, instantaneous consciousness in which the soul's being consists, an incandescent point in the filament connecting the negative pole of a past eternity with the positive pole of an eternity that is to come, that all of the Deity which any human book can hold is to this larger Deity of the working battery of the universe only as the films in a book of gold-leaf are to the broad seams and curdled lumps of ore that lie in unsunned mines and virgin placers, Oh!
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