Question

Given an end diastolic volume (EDV) of 120 ml / beat and an end systolic volume (ESV) of 50 ml / beat, the stroke volume (SV) would be ________?

A) 120 mL/beats
B) 50 mL/beats
C) 170 mL/beats
D) 70 mL/beats

Answer 1

The stroke volume (SV), calculated as the difference between end diastolic volume (EDV) and end systolic volume (ESV), would be 70 mL/beat given an EDV of 120 ml/beat and an ESV of 50 ml/beat.

Step-by-step explanation:

The stroke volume (SV) is calculated by taking the end diastolic volume (EDV) and subtracting the end systolic volume (ESV). In this case, if we have an EDV of 120 ml/beat and an ESV of 50 ml/beat, we would use the formula SV = EDV - ESV. Thus, the stroke volume for this student's question would be 120 ml/beat - 50 ml/beat which equals 70 mL/beat.

It is important to understand that stroke volume is a critical metric in assessing cardiac function. It is used in various calculations, such as determining ejection fraction, which is the percentage of blood ejected from the heart during systole. The normal range for a stroke volume in a resting individual is typically between 55-100 mL, and a resting heart rate (HR) usually falls between 60-100 beats per minute (bpm).