Diseases 1.1

What does Hypoxemia mean?

• Low O2 in the tissue

• Low O2 in the blood

The clinical assessment of oxygen transfer in the lung is a two part evaluation

• True

• False

Adequacy of oxygen transfer

• Assessment of hypoxemia

• PaO2 is sufficient enough to not suggest tissue hypoxia

• An assessment of pulmonary shunting

• Making sure the PaO2 is appropriate for the given FiO2

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Hypoxemia

• Below Normal PaO2

• Hypoxemia can lead to Hypoxia

• Above Normal PaO2

Efficiency of oxygen transfer

• An assessment of Pulmonary Shunting

• Making sure the PaO2 is appropriate for the given FiO2

• PaO2 is sufficient enough to not suggest tissue hypoxia

• Assessment of hypoxemia

Mechanisms of Hypoxemia are

• Decreased PiO2( Pressure of O2, Altitude, Equipment problems)

• Hypoventilation( Shallow breathing)

• Absolute shuntung

• Relative shunting

• Diffusion defects

Hypoventilation =

• No diffusion

• Non functional alveoli

• Low O2 transfer

• No exchange

Absolute shunt

• Non functional alveoli

• No diffusion

• Low O2 transfer

• No exchange

Relative Shunt

• Low O2 transfer

• No diffusion

• Non Functional alveoli

• No exchange

Diffusion Defect

• No exchange

• Low O2 transfer

• No functional alveoli

• No diffusion

Tags

NGSS.HS-LS2-5