[…] I did almoſt beleeve, that the motion of the Heart vvas knovvn to God alone: For neither could I rightly diſtinguiſh, vvhich vvay the Diaſtole and Systole came to be, nor vvhen nor vvhere the dilation and conſtriction had its exiſtence.
Source: wiktionary
In patients with rapid rates, diastole may be sufficiently shortened that the third and fourth heart sounds become superimposed and form a summation gallop.
Source: wiktionary
Of the total cardiac cycle at this rate, diastole accounts for 0.50 s, or 62% of the cycle, and systole accounts for 0.31 s, or 38%.
Source: wiktionary
During a short cycle or premature contraction, LV ejection begins before pressure in the aorta has completely decreased, and it remains higher than with longer diastoles [4, 5].
Source: wiktionary
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