Respiratory terms

Question 1

What does Qc represent?

Answer 1

Cardiac output (L/min)

Question 2

What does VE represent?

Answer 2

Minute ventilation (L/min)

Question 3

What does VA represent?

Answer 3

Alveolar ventilation (L/min)

Question 4

What does VO2 represent?

Answer 4

Oxygen consumption (L/min)

Question 5

What does VCO2 represent?

Answer 5

Carbon dioxide production (L/min)

Question 6

What does PB represent?

Answer 6

Barometric pressure (mmHg)

Question 7

What does PO2 represent?

Answer 7

Partial pressure of oxygen (mmHg)

Question 8

What does PCO2 represent?

Answer 8

Partial pressure of carbon dioxide (mmHg)

Question 9

What does PN represent?

Answer 9

Partial pressure of nitrogen (mmHg)

Question 10

What does PA(GAS) represent?

Answer 10

Gas pressure in the alveolar

Question 11

What does Pa(GAS) represent?

Answer 11

Gas pressure in the arteries

Question 12

What does PV(GAS) represent?

Answer 12

Gas pressure in the veins

Question 13

What does VT or TV represent?

Answer 13

Tidal volume

Question 14

What does f represent?

Answer 14

Respiratory rate

Question 15

What does VD represent?

Answer 15

Anatomic dead space

Question 16

What does IRV represent?

Answer 16

Inspiratory reserve volume

Question 17

What does ERV represent?

Answer 17

Expiratory reserve volume

Question 18

What does RV represent?

Answer 18

Residual volume

Question 19

What does FRC represent?

Answer 19

Functional residual capacity

Question 20

What does IC represent?

Answer 20

Inspiratory capacity

Question 21

What does VC represent?

Answer 21

Vital capacity

Question 22

What does TLC represent?

Answer 22

Total lung capacity

Question 23

Minute ventilation definition

Answer 23

How much is inhaled and exhaled in a minute

Question 24

Tidal volume definition

Answer 24

Volume of air moved into and out of the lungs during a single respiratory cycle

Question 25

Anatomic dead space definition

Answer 25

Volume of air in respiratory passageways where no gaseous exchange occurs

Question 26

Alveolar ventilation definition

Answer 26

Total volume of gas per unit time that reaches the alveoli

Question 27

Eupnoea definition

Answer 27

True breathing | When breathing is normal/unlaboured

Question 28

Apnoea definition

Answer 28

Cessation of breathing

Question 29

Hypoxia definition

Answer 29

Deficiency in the amount of oxygen reaching the tissues

Question 30

Hypercapnia definition

Answer 30

Abnormally high PaCO2 levels

Question 31

Hypocapnia definition

Answer 31

Abnormally low PaCO2 levels

Question 32

Inspiratory reserve volume definition

Answer 32

Extra air than can be inspired in addition to normal tidal inspiration

Question 33

Expiratory reserve volume definition

Answer 33

Extra air than can be expelled actively after passive expiration

Question 34

Residual volume definition

Answer 34

The amount of air left in the lungs that cannot be expelled

Question 35

Functional residual capacity definition

Answer 35

Lung volume at the end of normal quiet breathing

Question 36

How do you calculate functional residual breathing?

Answer 36

= Expiratory reserve volume + Reserve volume | = ERV + RV

Question 37

Inspiratory capacity definition

Answer 37

The volume that can be inspired from the end of normal quiet expiration to maximal inspiration

Question 38

How do you calculate inspiratory capacity?

Answer 38

= Tidal volume + inspiratory reserve volume | = TV(VT) + IRV

Question 39

Vital capacity definition

Answer 39

From maximal inspiration to maximal expiration

Question 40

How do you calculate vital capacity?

Answer 40

= Inspiratory reserve volume + Tidal volume + Expiratory reserve volume = IRV + TV(VT) + ERV

Question 41

Total lung capacity definition

Answer 41

From maximal inspiration to residual volume

Question 42

How do you calculate total lung capacity?

Answer 42

= Inspiratory reserve volume + Tidal volume + Expiratory reserve volume + Residual volume = IRV + TV(VT) +ERV +RV

Question 43

How do you calculate alveolar ventilation?

Answer 43

= Respiratory rate * (Tidal volume + Anatomic dead space) | = f * (VT + VD)