Formulas

Question 1

What is the formula for VD/VT

Answer 1

PaCO2-PeCO2/PaCO2

Question 2

What is the formula for IBW?

Answer 2

Females: 105+5(H-60)/2
Males: 106+6(H-60)/2

Question 3

What is the formula for compliance?

Answer 3

Volume/pressure

Question 4

What is the formula for tubing compliance?

Answer 4

Lost volume = tubing compliance x PIP

Question 5

What is the formula for I:E ratio?

Answer 5

Inspiratory flow rate/Mve - 1

Question 6

What is the formula for TCT?

Answer 6

1 time = TCT/sum of I:E ratio parts

Question 7

What is the formula for airway resistance?

Answer 7

PIP - Pplat/Flow rate

Question 8

What is the formula for PF ratio?

Answer 8

PaO2/FiO2

Question 9

What is the formula for oxygen index?

Answer 9

FiO2 x MAP/PaO2

Question 10

What is the formula for desired FiO2?

Answer 10

PaO2 (D) x FiO2 (C)/PaO2 (C)

Question 11

What is the formula for desired rate?

Answer 11

Rate (C) x PaCO2 (C)/PaCO2 (D)

Question 12

What is the formula for desired (Ve)?

Answer 12

Ve (C) x CO2 (C)/ CO2 (D)

Question 13

What is the formula for Va?

Answer 13

(VT-VD) x RR

Question 14

What is the formula for Va?

Answer 14

Va (C) x CO2 (C)/CO2 (D)

Question 15

What is the formula for desired VT?

Answer 15

Vt (C) x CO2 (C)/CO2 (D)