Cardiac output is -

Options

A. Stroke volume (SV) `xx` Heart rate (HR) = 5.3L/m
B. SV `xx` HR = 500 ml
C. SV `xx` HR = 72 ml/m
D. SV `xx` HR = 70 ml/m

Answer

**Step-by-Step Solution:**

1. **Understanding Cardiac Output**:
- Cardiac Output (CO) is defined as the amount of blood pumped by the heart (specifically the ventricles) in one minute.

2. **Formula for Cardiac Output**:
- The formula to calculate Cardiac Output is:
\[ \text{Cardiac Output} = \text{Stroke Volume} \times \text{Heart Rate} \]
- Here, Stroke Volume (SV) is the amount of blood pumped by the heart in one contraction, and Heart Rate (HR) is the number of heartbeats per minute.

3. **Values for Calculation**:
- In a normal individual, the Stroke Volume is approximately 70 ml (milliliters) per heartbeat.
- The average Heart Rate is about 72 beats per minute.

4. **Calculating Cardiac Output**:
- Plugging the values into the formula:
\[ \text{Cardiac Output} = 70 \, \text{ml/beat} \times 72 \, \text{beats/min} \]
- First, convert ml to liters for the final output:
\[ 70 \, \text{ml} = 0.07 \, \text{liters} \]
- Now, calculate:
\[ \text{Cardiac Output} = 0.07 \, \text{liters/beat} \times 72 \, \text{beats/min} = 5.04 \, \text{liters/min} \]
- Therefore, the Cardiac Output is approximately 5 liters per minute.

5. **Conclusion**:
- The final answer is that the Cardiac Output is approximately 5 liters per minute.