7.3 Measuring the process

Question 1

Measuring capacity of lungs

Answer 1

-peak flow meter=device measures rate at which air can be expelled from lungs
-vitalographs=more sophisticated version of peak flow, tested patient breathes out as quickly as they can through a mouthpiece and instrument produces graph of amount and how quickly air breathed out (forced expiratory volume)
-spirometer=measure different aspects of lung volume/investigate breathing patterns

Question 2

Tidal volume

Answer 2

-volume of air that moves in/out of lungs with each resting breath

Question 3

Vital capacity

Answer 3

-volume of air that can be breathed in when strongest possible exhalation is followed by deepest possible intake of breath

Question 4

Inspiratory reserve volume

Answer 4

-max volume of air you can breathe in over and above a normal inhalation

Question 5

Expiratory reserve volume

Answer 5

-extra amount of air you can force out of your lungs over and above normal tidal volume of air you breathe out

Question 6

Residual volume

Answer 6

-volume of air that is left in your lungs when you have exhaled as hard as possible

Question 7

Total lung capacity

Answer 7

Sum of vital capacity and residual volume

Question 8

Breathing rate

Answer 8

Number of breaths taken per minue

Question 9

Ventilation rate

Answer 9

Total volume of air inhaled in 1 minute
=tidal volume x breathing rate (per min)