STATIC PULMONARY FUNCTION TEST     (static test)

1)      4 lung volumes:

-          Tidal volume(TV):

a)      Total 500 ml; 150 ml remains inside alveolar and 350 ml involve in gaseous exchanges

b)      Refers to the volume of inspiration and expiration at normal and rest condition

-          Inspiratory reserved volume(IRV):

a)      Total 3000 ml

b)      Refers to the volume of air that can be inhaled forcedly after normal tidal volume inspiration.

-          Expiratory reserved volume(ERV):

a)      Total 1000 ml

b)      Refers to the volume of air that can be exhaled forcedly at the end of tidal volume expiration.

-          Residual volume(RV):

a)      Total 1200 ml

b)      Refers the volume of air that remains inside the lungs after the maximum respiration.

2)      4 lung capacities:

-          Vital capacity(VC):

a)      IRV(3000ml) + TV(500ml) + ERV(1000ml)

b)      Total 4500 ml

c)       The volume of air that can be exhaled after the maximum inspiration

-          Inspiratory capacity

a)      TV(500ml) + IRV(3000ml)

b)      Total 3500 ml

c)       The amount of air that can be inhaled after the end of tidal volume expiration.

-          Functional residual capacity(FRC)

a)      ERV(1000ml) + RV(1200ml)

b)      Total 2200 ml

c)       The capacity of air that can be found or remained in the lungs after the normal tidal volume expiration.

-          Total lung capacity(TLC)

a)      TV(500ml) + IRV(3000ml) + ERV(1000ml) + RV(1200ml)

b)      Total 5700 ml

c)       The maximum capacity that can be found in the lungs after the maximum compulsive inspiration.

3)      Pulmonary ventilation:

-          Also known as minute respiratory rate

-          16 respiratory cycles occur in a minute throughout normal breathing

-          Formula: 16 times 500ml(TV) = 8 L/minute

4)      Dead space:

a)      The amount of air that be found in air-way passage but does not undergo gaseous exchanges.

b)      150 ml out of 500 ml tidal volume.

c)       3 types of dead space:

Types of dead space	Symptoms
Anatomic	Air conducting zone
Alveolar	Respiratory zone(non conducting zone)
Physiology	Refer to the mix of anatomic and alveolar  dead space