Relationship between stroke volume and pump rate?

The relationship between stroke volume and pump rate is directly proportional. This means that as stroke volume increases, pump rate also increases. Conversely, as stroke volume decreases, pump rate also decreases.

Stroke volume is the amount of blood that is pumped out of the heart with each beat. Pump rate is the number of beats per minute. The heart rate and stroke volume together determine the cardiac output, which is the amount of blood that is pumped out of the heart per minute.

The relationship between stroke volume and pump rate can be explained by the Frank-Starling law of the heart. This law states that the force of contraction of the heart muscle is determined by the preload on the heart. Preload is the amount of blood that is in the heart before it contracts.

As preload increases, the force of contraction of the heart muscle also increases. This leads to an increase in stroke volume. As stroke volume increases, the pump rate also increases. This is because the heart is able to pump out more blood with each beat, so it does not need to beat as fast to maintain the same cardiac output.

The relationship between stroke volume and pump rate is important for understanding how the heart works. By understanding this relationship, doctors can better diagnose and treat heart conditions.