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Pulmonary Gas Pressures Video
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Video at a Glance
- This video discusses pulmonary gas pressures.
- The two main gaseous measurements are fraction of inspired particle and partial pressure.
- The fraction of inspired particle will match the atmospheric make-up. The air is made up of 76% nitrogen, 20% oxygen, 3% water vapor, and .04% carbon dioxide.
- The partial pressure is the percentage of gas multiplied by the total pressure.
- For gas to travel into the blood, gas particles dissolve in a liquid and diffuse through the thin alveolar membrane into the bloodstream.
- Carbon dioxide is very soluble in water and dissolves and diffuses five times faster than oxygen.
- A patient with hypoventilation will have rapidly rising CO2 levels.
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