A text-book of physiology for medical students and physicians . Fig. 216.—Sphygmograms illustrating the effect of variations in blood-pressure, partic-ularly upon the position of the dicrotic wave and notch : n. The dicrotic notch ; d, thedicrotic wave. A, Sphygmogram while blood-pressure was relatively low. B, Sphygmo-gram with higher blood-pressure. (Mackenzie.) whether the pulse is large (pulsus magnus) or small (pulsus parvus),whether the wave rises and falls rapidly (pulsus celer) as happensin the case of insufficiency of the aortic valves, or whether in onephase or the other it is more p
A text-book of physiology for medical students and physicians . Fig. 216.—Sphygmograms illustrating the effect of variations in blood-pressure, partic-ularly upon the position of the dicrotic wave and notch : n. The dicrotic notch ; d, thedicrotic wave. A, Sphygmogram while blood-pressure was relatively low. B, Sphygmo-gram with higher blood-pressure. (Mackenzie.) whether the pulse is large (pulsus magnus) or small (pulsus parvus),whether the wave rises and falls rapidly (pulsus celer) as happensin the case of insufficiency of the aortic valves, or whether in onephase or the other it is more prolonged than normal (pulsus tardus).It seems obvious, however, that a more satisfactory conclusion maybe reached in all such cases by obtaining a sphygmographic the works devoted to clinical methods numerous such sphygmo-grams are described. By mere pressure upon the artery one candetermine also approximately whether the blood-pressure is high 520 CIRCULATION OF BLOOD AND LYMPH. or low by estimating the force with which the wave presses uponthe f
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