PHYSIOLOGY
GENERAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Heart rate × stroke volume
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Heart rate + stroke volume
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Heart rate + tidal volume
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Tidal volume × stroke volume
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Detailed explanation-1: -Cardiac output is the product of heart rate (HR) and stroke volume (SV) and is measured in liters per minute. HR is most commonly defined as the number of times the heart beats in one minute. SV is the volume of blood ejected during ventricular contraction or for each stroke of the heart.
Detailed explanation-2: -Cardiac output is calculated by multiplying stroke volume with heart rate.
Detailed explanation-3: -We can use this simple calculation to figure out cardiac output: Cardiac Output = Stroke Volume * Heart Rate, which is written CO = SV * HR. Remember, there are two variables that are used to determine the cardiac output. Those are the stroke volume and heart rate.
Detailed explanation-4: -Cardiac output is a measurement of the amount of blood pumped by each ventricle in 1 min. To calculate cardiac output, SV is multiplied by the HR, the number of cardiac cycles per minute. It can be represented mathematically by the following equation: CO = HR × SV (see Fig. 1.22).
Detailed explanation-5: -Cardiac output is logically equal to the product of the stroke volume and the number of beats per minute (heart rate).