Mathematics · ECG Interpretation Calculations
Using the 300 rule for a regular cardiac rhythm on standard ECG paper, how many large squares between two consecutive R waves corresponds to a heart rate of 75 bpm?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15 large squares
- 24 large squares✓
- 32 large squares
- 43 large squares
Correct answer
4 large squares
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