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Would you use spirometry to measure RV and TLC


What is one of the main measurements attained from spirometry

FVC and FEV; compared to the tidal waves; Peak expiratory flow rate, Mid-maximal expiratory flow (FEF 25-75)

what does inert gas (He) dilution measure

FRC using the mass balance equation

what other pressure can you obtain by having a patient put her lips tights around a tube

alveolar pressure

what does plethysmography measure


what princple is plethysmopgraphy based on?

boyle's law

lung compliance and airway resistance can be measured by

a flow meter and an esophageal balloon

what does a normal result for a esophageal ballon test look like


What part of the the slope in the single breath nitrogen test indicates poor distribution of ventilation

Phase III

What does phase II of nitrogen elimination test show

50% dead space and 50% alveolar

What is the residual volume for a person with restricve disease


What is the residual volume for a person with obstructive disease


Who has a more difficult time expiring, a person with obstructive or restrictive disease


T/F obstructive disease maximal expiratoin begins and and ends at higher lung volumes than normal


What is the relationship of restrictive disease expiratory flow rate to normal flow rate


what is the hallmark of all obstructive disease

premature airway exposure

why is TLC increased in a patient with obstructive pulmonary disease despite the fact that their VC is decreased

increased "trapped air", increased FRC

why are crackles heard in people with asthma

crackles are produced by opening of airways that closed on the previous breath

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