Exam-style question
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Which segment of the ECG waveform indicates the time between atrial and ventricular depolarization?.
- A.P-R interval
- B.Q-T interval
- C.S-T segment
- D.T wave
Model answer
What a good answer should say
- P-R interval
Explanation
Why this works
The P-R interval measures the time from the beginning of atrial depolarization to the beginning of ventricular depolarization, indicating conduction through the AV node.
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