Question

If following data belongs to an adult male
$Cardiacindex=\frac{cardiacoutput}{Totalbodysurfacearea}$
Total body surface area in adult = $1.7m^2$
Cardiac index - $4litre/mt./m^2$
Heart rate - $68/minute$
End systolic volume - $50ml.$
Total body surface area - $1.7m^2$
Then choose the correct set of option.

• A. Cardiac output = 5 litre/minute. ; stroke volume = 70 ml. ; EDV =120 ml.
• B. C.O. = 5 litre/minute. ; SV = 100 ml. ; EDV = 50 ml.
• C. C.O. = 6.8 litre/minute. ; SV = 50 ml. ; EDV = 50 ml.
• D. C.O. = 6.8 litre/minute. ; SV = 100 ml. ; EDV = 150 ml.

Answer 1

The correct option is D C.O. = 6.8 litre/minute. ; SV = 100 ml. ; EDV = 150 ml.

1.Cardiac output = Heartrate x Stroke volume OR Cardiac index x total body surface area = 4 x 1.7 = 6.8 liter per minute.

Now, stroke volume = cardiac output/heartrate = 6.8/68 = 0.1 liter = 100 mL

As stroke volume = EDV-ESV, EDV = Stroke volume + ESV = 100 + 50 = 150 mL

So, the correct answer is 'C.O. = 6.8 litre/minute. ; SV = 100 ml. ; EDV = 150 ml.'