Biology · Human Physiology
What is the duration of a normal PR interval in a standard electrocardiogram (ECG)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.45 - 0.60 seconds
- 20.25 - 0.40 seconds
- 30.12 - 0.20 seconds✓
- 40.02 - 0.05 seconds
Correct answer
0.12 - 0.20 seconds
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