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The second upward rise in the decline is called the recoil, or the dicrotic wave, and is due to the sudden closure of the aortic valves and the recoil of the blood wave. The interpretation of the jugular tracing, or phlebogram as the vein tracing may be termed, shows the apex of the rise to be due to the contraction of the auricle.
Killed off my first nurse out of hand good little boy, conscientious enough; took no care of himself; ate his meals in the sick-room against my wishes; off he went dicrotic pulse, diarrhea, vomiting, hospital, thrombosis of pulmonary artery, pouf, requiescat." "And Miss Wakeley?" "Knocked under yesterday, and she was fairly saturated with creolin night and morning.
The immediate following second rise not so high as that of the auricular contraction is known as the ventricular wave, and corresponds to the dicrotic wave in the radial. The next lesser decline shows ventricular diastole, or the heart rest. A tracing of the jugular vein shows the activity of the right side of the heart.
A comparison of the pulse in the artery beyond the seat of the aneurysm with that in the corresponding artery on the healthy side, shows that on the affected side the wave is smaller in volume, and delayed in time. A pulse tracing shows that the normal impulse and dicrotic waves are lost, and that the force and rapidity of the tidal wave are diminished.
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