American journal of physiology . A B C Figure 3. Three types of normal intraventricular pressure curves taken withmanometers of different degress of sensitiveness. Detailed description intext, a-h, auricular systolic, h-d, isometric period, d-J, ejection period, /-/,diastole. Calibration line cut off. The record in A was taken with a manometer in which avariation of i mm. was approximately equal to a like pressurechange in the ventricle. The details of this curve are contraction causes the slight rise of pressure from a to tricuspid closure occurs in the confused vibratio
American journal of physiology . A B C Figure 3. Three types of normal intraventricular pressure curves taken withmanometers of different degress of sensitiveness. Detailed description intext, a-h, auricular systolic, h-d, isometric period, d-J, ejection period, /-/,diastole. Calibration line cut off. The record in A was taken with a manometer in which avariation of i mm. was approximately equal to a like pressurechange in the ventricle. The details of this curve are contraction causes the slight rise of pressure from a to tricuspid closure occurs in the confused vibration at c. Thesteep pressure rise during the isometric period (Anspannungszeit)follows from c to d. Here the semilunar valves open and theejection period begins. This proceeds in two phases, viz., a riseof pressure {d to e) which is slower than that of the isometricperiod, changing after a rounded summit to the falling pressure{e to /). The closure of the semilunars causes the bend from /to g, after which the pressure drops rapidly
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