Pulm Normal Values

Question 1

Normal F_{I O2} =

Answer 1

Normal F_{I O2} = 0.21

(Fraction of inspired oxygen)

Question 2

Standard atmospheric pressure at sea level is _____ mmHg_

Answer 2

Standard atmospheric pressure at sea level is 760** **mmHg

Question 3

Normal F_{I CO2} =

Answer 3

Normal F_{I CO2} = 0

(Fraction of inspired CO2)

Question 4

Normal resting RQ =

Answer 4

Normal resting RQ = 0.8

Question 5

Normal P_{A O2} =

Answer 5

Normal P_{A O2} = 100 mmHg

(Partial pressure of oxygen in the alveoli)

Question 6

Normal P_{A CO2} =

Answer 6

Normal P_{A CO2} = 40 mmHg

(Partial pressure of CO2 in the alveoli)

Question 7

Normal P_{a O2} =

Answer 7

Normal P_{a O2}​ = 80-100 mmHg

(Partial pressure of oxygen in the alveoli)

Question 8

Normal P_{a CO2} =

Answer 8

Normal P_{a CO2} = 40 mmHg

(Partial pressure of CO2 in the arteries)

Question 9

Normal [HCO₃^-]_a =

Answer 9

Normal [HCO₃^-]_a​ = 24 mEq/L

(Concentration of HCO₃^- in the arteries)

Question 10

Normal pH_a =

Answer 10

Normal pH_a = 7.4

(pH in the arteries)

Question 11

Normal P_vO2 =

Answer 11

Normal P_vO2 = 40 mmHg (35-45 mmHg is normal)

(Partial pressure of O2 in the venous blood)

Question 12

Normal P_vCO2 =

Answer 12

Normal P_vCO2​ = 45 mmHg

(Partial pressure of CO2 in the venous blood)

Question 13

At P_aO2 = 100 mmHg, normal Hb saturation = ______

Answer 13

At P_aO2 = 100 mmHg, normal Hb saturation = 98%

Question 14

At P_aO2 = 60 mmHg, normal Hb saturation = ______

Answer 14

At P_aO2 = 60 mmHg, normal Hb saturation = 90%

Question 15

At P_aO2 = 40 mmHg, normal Hb saturation = ______

Answer 15

At P_aO2 = 40 mmHg, normal Hb saturation = 75%

Question 16

At P_aO2 = 27 mmHg, normal Hb saturation = ______

Answer 16

At P_aO2 = 27 mmHg, normal Hb saturation = 50%

Question 17

What is the normal P₅₀ for hemoglobin saturation?

Answer 17

27 mmHg

Question 18

Normal FRC ~ ______

Answer 18

Normal FRC ~ 2L

Question 19

Normal RV ~ ______

Answer 19

Normal RV ~ 1L

(Residual volume)

Question 20

Normal V_T =

Answer 20

Normal V_T​ = 500 mL

(Tidal volume)

Question 21

Normal V_D =

Answer 21

Normal V_D = 150 mL

(Anatomic dead space volume)

Question 22

Normal breathing frequency at rest =

Answer 22

12-15/min

Question 23

Normal P_IP ~ ____ cm H2O

Answer 23

Normal P_IP​ ~ -5 cm H2O

(Intrapleural pressure)

Question 24

Nomal V̇_CO2 =

Answer 24

Nomal V̇_CO2 = 200 mL/min

Question 25

Nomal V̇_O2 =

Answer 25

Nomal V̇_O2 = 250 mL/min

Question 26

Normal TLC ~ _______

Answer 26

Normal TLC ~ 5 - 6 L

(~ 2*FRC)

Question 27

Normal Vital Capacity ~ _______

Answer 27

Normal Vital Capacity ~ 3.5 - 4.5 L