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The fourth heart sound or S 4 is an extra heart sound that occurs during late diastole, immediately before the normal two "lub-dub" heart sounds (S 1 and S 2).It occurs just after atrial contraction and immediately before the systolic S 1 and is caused by the atria contracting forcefully in an effort to overcome an abnormally stiff or hypertrophic ventricle.
A parasternal heave, lift, [1] or thrust [2] is a precordial impulse that may be felt (palpated) in patients with cardiac or respiratory disease. Precordial impulses are visible or palpable pulsations of the chest wall, which originate on the heart or the great vessels. [3]
The Body: A Guide for Occupants is a non-fiction book by British-American author Bill Bryson, first published in 2019. It is Bryson's second book of popular science, with the first being A Short History of Nearly Everything published in 2003. After a brief introduction, the book divides itself into several chapters, each of which describes a ...
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Enjoy a classic game of Hearts and watch out for the Queen of Spades!
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Schultz died on April 14, 1931 [10] [11] of a heart problem, a mitral lesion, though legends have persisted that he died as a result of poisoning by a white musician who was jealous of him. [ 1 ] [ 2 ] Less colorful reports indicate that he suffered a stroke while boarding a bus. [ 12 ]
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