Pulmonary Eval pt 1 Flashcards
tidal volume (TV)
normal breathing
inspiratory reserve volume (IRV)
max inhale after quiet breathing
expiratory reserve volume (ERV)
max exhale after quiet breathing
vital capacity
IRV + ERV
4000 - 5000 ml
residual volume
air left over, keeps lungs inflated
what is normal FEV1/FVC?
0.75 - 0.8
it’s not official, but what is pre-obstruction FEV1/FVC?
0.7 - 0.75
what is restrictive lung disease FEV1/FVC, and what does it tell you?
> 0.8
-Tells you that too much air is coming out bc of the non-compliant lung
what is the FEV1/FVC for obstructive lung disease?
< 0.7
forced midexpiratory flow (FEF 25-75)
volume of air exhaled over middle half of FVC
DL / DLCO
diffusing capacity of lung aka the amount of gas entering pulmonary BF per unit time
if DLCO is really low, what does this mean?
something is wrong with the alveoli
peak flow
-max rate a person can reach breathing at any point
-used with asthmatics to determine exacerbation
-typically described as L/sec
what are some facial signs of distress?
nasal flaring
sweating
paleness
focused or enlarged pupils
signs of SNS kicking in
JVD is usually seen with what pulmonary condition?
cor pulmonale