Quiz 4&5 Respiratory Physiology Flashcards
(89 cards)
Tidal volume (TV)
The amount of air inspired or expired during normal, quiet respiration
Inspiratory reserve volume (irv)
The amount of air which can be forcefully inspired above and be found that taken in during a normal inspiration
Expiratory reserve volume (erv)
The maximal amount of air which can be forcefully expired following a normal expiration
Residual volume (rv)
The amount of air which remains trapped in the lungs after a maximal expiratory effort
Total lung capacity (tlc)
The total amount of air the lungs can contain - the sum of all four volumes
Total lung capacity formula
=total volume + inspiratory reserve volume + expiratory reserve volume + residual volume
Vital capacity (vc)
The maximal amount air of that can be forcefully expired after a maximum inspiration
Vital capacity (vc) formula
=total volume plus inspiratory reserve volume plus expiratory reserve volume
Functional residual capacity (frc)
The amount of air remaining in the lungs after a normal expiration
Functional residual capacity (frc) formula
= residual volume plus expiratory reserve volume
Inspiratory capacity (ic)
The maximal amount of air which can be inspired after a normal expiration
Inspiratory capacity (ic) formula
= total volume plus inspiratory reserve volume
Normal adult male
Diagram on the first page
Spirometty
A pulmonary function test that is useful for evaluating changes in respiratory system, it can distinguish between restrictive and obstructive diseases
Restrictive diseases
Affect the lung capacity to expand
Obstructive pulmonary diseases
Cause the lungs to hyperinflate due to an increase in airway restriction
Spirometer
For measuring respiratory volumes
Respiratory minute volume (L/min)
Tells us the total amount of gas that flows into of out of the respiratory tract in 1 minute
Respiratory minute volume (L/min) formula
= tidal volume (mL) x respiratory rate (breaths/min)
Nomogram
For an predicting an individual’s vital capacity, probability of an event based on known relationships to best prescribe treatment and care
Heymer test of respiratory reserve
-a better index of respiratory reserve
-principal value in following volume changes caused either by disease or recovery from a disease
Decreased vital capacity
Individuals with left-sided heart
Individuals with paralytic polio
Poliomyelitis or polio
Virus that infects an individual’s spinal cord and causes paralysis
Breath-holding time
Gives an indication of individual’s functional respiratory reserve and efficiency of their respiratory system