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Left axis deviation is between -30 and -90 degrees.
左轴偏移在-30和-90度之间。
The rest is known as northwest axis or extreme axis deviation.
其余称为西北轴或极端轴偏移。
Negative values of the QRS complex in both leads are indicative of extreme axis deviation.
两个导联的QRS波群均为负值,表明存在极端轴偏移。
A positive value in lead I and negative in lead aVF, place the axis in the upper left quadrant, which interprets as possible left axis deviation.
如果导联I为正值,导联aVF为负值,则将轴放置在左上象限,解释为可能是左轴偏移。
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