Answer
Answer
Normal values for waves and intervals are as follows:
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RR interval: 0.6-1.2 seconds
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P wave: 80 milliseconds
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PR interval: 120-200 milliseconds
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PR segment: 50-120 milliseconds
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QRS complex: 80-100 milliseconds
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J-point: N/A
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ST segment: 80-120 milliseconds
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T wave: 160 milliseconds
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ST interval: 320 milliseconds
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QT interval: 420 milliseconds or less if heart rate is 60 beats per minute (bpm)
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