What is the normal stroke volume in milliliters per beat?

The normal stroke volume, which represents the amount of blood ejected by the heart with each contraction, is typically around 70 mL per beat for a healthy adult at rest. This value is an important physiological parameter, as it reflects the efficiency of the heart and its ability to pump blood effectively throughout the body.

Understanding stroke volume is crucial for evaluating cardiovascular function, particularly during exercise or in individuals with heart conditions. The figure of 70 mL/beat serves as a standard reference point in fields like exercise physiology and athletic training, where monitoring heart function can help optimize performance and prevent injury.

Other values, while they may be seen in certain contexts or populations, do not represent the average stroke volume in a healthy adult. Therefore, while their knowledge can be beneficial in specific situations, the most widely accepted stroke volume in clinical and athletic contexts is indeed approximately 70 mL per beat.