Question

What does bp and co change to in healthy patients : a. Blood pressure (BP) increases, cardiac output (CO) decreases

b. Blood pressure (BP) decreases, cardiac output (CO) increases
c. Blood pressure (BP) and cardiac output (CO) both increase
d. Blood pressure (BP) and cardiac output (CO) both decrease

Answer 1

In a healthy young adult, when heart rate increases above 160 bpm, cardiac output decreases.

Step-by-step explanation:

Cardiac output (CO) is the measurement of blood flow from the heart through the ventricles, and is usually measured in liters per minute. Any factor that causes cardiac output to increase, by elevating heart rate or stroke volume or both, will elevate blood pressure and promote blood flow. Conversely, any factor that decreases cardiac output, by decreasing heart rate or stroke volume or both, will decrease arterial pressure and blood flow. In a healthy young adult, when heart rate increases above 160 bpm, cardiac output decreases. This is due to decreased filling time of the ventricles, causing stroke volume to decrease faster than heart rate increases.