Lung Volumes
- Created by: Klmcgonigle
- Created on: 01-02-18 14:17
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- Lung Volumes
- Spirometer
- A chamber of medical grade oxygen floating on a tank of water. A chamber of soda lime.
- Exhaled CO2 is absorbed by the soda lime, while allows the measure of 02 consumption
- Precautions
- Subject should be healthy (e.g. free from asthma)
- Soda lime should be fresh and functioning
- No air leaks in apparatus
- Sterile mouthpiece
- A chamber of medical grade oxygen floating on a tank of water. A chamber of soda lime.
- Vital capacity
- The maximum volume of air that can be moved by the lungs in one breath
- Depends on: Size, Age, Gender, Level of exercise
- 2.5-5dm^3
- Residual volume
- Volume of air that remains in the lungs after forced expiration
- 1.5dm^3
- Tidal volume
- Volume of air moved in and out of lungs with each resting breath
- 0.5dm^3
- Breathing rate
- Number of breaths per minute
- Can be measured by counting the peaks on a spirometer trace in one minute
- Oxygen uptake
- The volume of oxygen absorbed by the lungs in one minute
- Can be measured by the decrease in the volume of air in the spirometer
- An increase can result from an increased breathing rate and/or deeper breaths
- Spirometer
- A device that measures the movement of air in and out of lungs
- -the relationship between vital capacity, tidal volume, breathing rate and oxygen uptake -To include analysis and interpretation of primary and secondary data e.g. from a data logger or spirometer.
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