From shifts in the economy to advances in technology, the career choices of Americans have changed dramatically since the 1900s. Since the days when “farmer” was a popular occupation, to the present when 50 percent of the top 20 fastest growing jobs are in healthcare, career choices have certainly shifted over…
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Under resting conditions, the ECG of healthy individuals exhibits periodic variation in R-R intervals. Heart rate variability refers to the beat-to-beat alterations in heart rate. This term has become widely accepted though in practice, one usually measures the variation in the beat-to-beat interval rather than the variation in the instantaneous heart rate. Heart rate variability is a measure of variation in…
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