. Diseases of the heart and thoracic aorta. Fig. no.—Pulsus Fig. 111.—Pulsus trizeniinnts. Irregularity in w///w^. —Irregularities in volume (seefig. 112) depend upon the fact that unequal quantities ofblood are discharged into the arterial system at differentcontractions of the left ventricle. The condition is usuallyassociated with irregularity in time, for when the timebetween the ventricular contractions varies, the amount of Irregularity of the Pulse. 271 blood which the left ventricle has to discharge will be apt tovary too.

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectheart, bookyear1884