Question

The unit of measurement of heart beat is
A. Beats per minute
B. Liters per minute
C. Beats per second
D. Beats per hour

Answer 1

Hint: Heart rate describes the pace of cardiac cycle. It starts at the initiation of one heartbeat and ends at the beginning of next. Heart rate varies as per the oxygen requirement and carbon dioxide excretion by the body.

Complete answer:
Heart beat examination refers to the measurement of the number of times a heart beats per minute (bpm). These aid medical professionals in diagnosing underlying medical conditions and to carry out their follow ups for the same.
In general, human heart rate ranges from 70 to 90 beats per minute. Athletes may have a lesser heart rate ranging from 40 to 60 beats per minute. However, under anxiety and stressful conditions, the heart rate is often raised. The heart rate can be measured in the body by locating the pulse and monitoring it. A pulse is felt whenever blood vessels are pumped with blood from the heart.
Unit of measurement of heart beat cannot be liters per minute, beats per second or beats per hour. Heart beat measurement refers to monitoring the number of times heart beats so this cannot be measured in liters. Also, measuring heart beat per second or per hour will be extreme as measuring it per second will be too less to provide any relevant or concluding result and measuring it for an hour will be too long and will only waste time of both patient and the examiner with no relevance. Hence, as a standard measurement, beats per minute is taken into account.
So, the correct answer is option “A” that is the unit of measurement of heart beat is beats per minute (bpm).

Note: Cardiac cycle is referred to as a sequential contraction and relaxation of the auricles and ventricles in an alternating fashion. It helps in pumping blood all through the body. Heart beat can be determined by recording the pace of these events. It can be detected with ease with the help of a stethoscope. Heart rate monitors and electrocardiograph (ECG) can also be employed for monitoring the heart rates or pulse rates.