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What indicate average heart rate with audible beep?

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in Biomedical Instrumentation by (76.6k points)
What indicate average heart rate with audible beep?

(a) disposable electrodes

(b) heart rate meter

(c) amplifier

(d) cathode ray tube

The question was asked in an online interview.

My doubt stems from Arrhythmias Monitor topic in section Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

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Correct option is (b) heart rate meter

Easy explanation: ‘Cardioscopes’ and comprise of disposable type pregelled electrodes to pick up ECG signal. Amplifier and a cathode ray tube (CRT) for the amplification and display the ECG which enable direct observation of the ECG waveform.A heart rate meter to indicate average heart rate with audible beep or flashing light or both with each beat.

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