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・ U Thong Style
・ U Tin
・ U Tin Thit
・ U to U
・ U Tong-chuk
・ U Train
・ U Turn (1997 film)
・ U tvojim molitvama – Balade
・ U tvojim očima
・ U Understand
・ U Vimala
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・ U výčepu
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U wave
・ U Wisara
・ U Wisara Monument
・ U with diaeresis
・ U with diaeresis (Cyrillic)
・ U with double acute
・ U with double acute (Cyrillic)
・ U with macron
・ U with macron (Cyrillic)
・ U with tilde (Cyrillic)
・ U word
・ U Zaboravu
・ U Škripcu
・ U&I
・ U'Bizchutan


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U wave : ウィキペディア英語版
U wave

The U wave is a wave on an electrocardiogram that is not always seen. It is typically small, and, by definition, follows the T wave. U waves are thought to represent repolarization of the papillary muscles or Purkinje fibers.
==Interpretation==
Prominent U waves are most often seen in hypokalemia, but may be present in hypercalcemia, thyrotoxicosis, or exposure to digitalis, epinephrine, and Class 1A and 3 antiarrhythmics, as well as in congenital long QT syndrome, and in the setting of intracranial hemorrhage.
An inverted U wave may represent myocardial ischemia (and especially appears to have a high positive predictive accuracy for left anterior descending coronary artery disease ) or left ventricular volume overload.
A U-wave can sometimes be seen in normal younger, athletic individuals.〔EKG-boken Ylva Lind, Lars Lind, Liber, 2011〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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