Question

A patient has a strove volume of 70mL/beat and a heart rate of 80 beats/ minute. What is the CO:

A. 4.2 L/min
B. 5.9 L/min
C. 5.3 L/min
D. 5.6 L/min

Answer 1

Cardiac output (CO) is calculated by multiplying stroke volume (SV) by heart rate (HR). With a stroke volume of 70 mL/beat and a heart rate of 80 beats/minute, the CO is 5.6 L/min, making option D correct.

Step-by-step explanation:

The student is asking about calculating cardiac output (CO), which is the volume of blood the heart pumps per minute. To find CO, you multiply stroke volume (SV) by heart rate (HR). In this case, the stroke volume is 70 mL/beat, and the heart rate is 80 beats/minute. To calculate CO:

First, convert stroke volume to liters by dividing by 1000, since there are 1000 mL in a liter. This gives you 0.07 L/beat.

Then, multiply stroke volume by heart rate:
CO = HR × SV
CO = 80 beats/minute × 0.07 L/beat

The CO is then:
CO = 5.6 L/minute

Therefore, the correct answer is D. 5.6 L/min.