Question

Considering the stroke volume of an adult healthy human being is 70 mL, identify the cardiac output in one hour from the following :

• A. 50.40 Lit/hour
• B. 504.0 Lit/hour
• C. 30.24 Lit/hour
• D. 302.4 Lit/hour

Answer 1

The Correct Option is D

The correct answer is (D) : 302.4 Lit/hour.

Answer 2

The correct answer is: (D) 302.4 Lit/hour.

Cardiac output (CO) refers to the volume of blood pumped by the heart per minute. It is calculated as the product of stroke volume (SV) and heart rate (HR). The formula is:

Cardiac Output (CO) = Stroke Volume (SV) × Heart Rate (HR)

Given data:

• Stroke volume (SV) = 70 mL (The amount of blood pumped by the heart with each beat)
• Heart rate (HR) = 72 beats per minute (The number of heartbeats per minute)

Step 1: Calculate the cardiac output in mL/min:

CO = 70 mL × 72 beats/min = 5040 mL/min

Step 2: Convert mL to Liters:

CO = 5040 mL/min ÷ 1000 = 5.04 L/min

Step 3: Convert L/min to L/hour:

Cardiac Output (1 hour) = 5.04 L/min × 60 = 302.4 L/hour

Therefore, the correct cardiac output in one hour is 302.4 Lit/hour.