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Break a leg" is an English-language idiom used in the context of theatre or other performing arts to wish a performer "good luck". An ironic or non-literal saying of uncertain origin (a dead metaphor), [1] "break a leg" is commonly said to actors and musicians before they go on stage to perform or before an audition. Though a similar and ...
This decreases the venous return, and so there will be decreased cardiac output, which ultimately causes systolic blood pressure to fall (hypotension). This hypotension may lead the subject to faint or to have other symptoms of hypotension. Standing requires about 10% more energy than sitting. [2] [better source needed]
Other terms that are used to describe the mechanical properties of arteries include elastance, or the reciprocal (inverse) of elastance, compliance. The relationship between arterial stiffness and pulse wave velocity was first predicted by Thomas Young in his Croonian Lecture of 1808 [ 11 ] but is generally described by the Moens–Korteweg ...
Why Do People Say 'Break a Leg'? Like many things, it all comes back to superstition . On the night of a big show, actors believe that wishing someone "good luck" is actually bad luck.
The major tissues affected are nerves and muscles, where irreversible damage starts to occur after 4–6 hours of cessation of blood supply. [4] Skeletal muscle, the major tissue affected, is still relatively resistant to infarction compared to the heart and brain because its ability to rely on anaerobic metabolism by glycogen stored in the cells may supply the muscle tissue long enough for ...
Other factors which may point to a diagnosis of critical limb ischemia are a Buerger's angle of less than 20 degrees during Buerger's test, a capillary refill of more than 15 seconds or diminished or absent pulses. [citation needed] Critical limb ischemia is different from acute limb ischemia. Acute limb ischemia is a sudden lack of blood flow ...
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The poor blood flow is often a result of atherosclerotic blockages more proximal to the affected area; [3] individuals with intermittent claudication may have diabetes — often undiagnosed. [4] Another cause, or exacerbating factor, is excessive sitting (several hours), especially in the absence of reasonable breaks, along with a general lack ...