The cardiologist performed an ECG on the patient to record the _________.
2016
The cardiologist performed an ECG on the patient to record the _________.
- A.
flow of heart impulses
- B.
amount of blood circulating in the body
- C.
ventricular beat rate
- D.
heart rate (rhythm)
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Correct answer: D
The cardiologist performed an ECG on the patient to record the electrical activity of the heart. An electrocardiogram (ECG) measures the heart's electrical signals to assess heart rate and rhythm.