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that looks like 2 different things.

4 or more pvc's is considered "a run of vtach"

the other part would depend on the rhythm before the vtach...

ex. sinus tachycardia with a run of vtach

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12y ago

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If a person's heart rate is 72 beats per minute determine the number of QRS complexes that would have appeared on an ECG during the first 30 seconds?

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