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Cecilia ~ 21 ~ New York

medicalschool:

A normal heart rhythm is called normal sinus rhythm (NSR for short). An NSR will have a heart rate (this is the same as the pulse) between 50 and 100 beats per minute and a normal impulse formation from the SA node ( P wave). In the absence of any abnormalities, a completely normal rhythm will also have a normal PR interval (interval from the beginning of the P wave to the beginning of the QRS of .12-.20 seconds), a normal QRS width (time it takes for the ventricles to contract of .04-.10 seconds), a normal QT interval (interval from the beginning of the QRS to the beginning of the T wave of .30-.46 seconds). Also, all the waveforms must be of a normal shape with no ST changes.

(Source: equimedcorp.com)

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    NSR
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    Learning this very soon! :)
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