Oxygenation and Mechanisms of Hypoxemia article Flashcards Preview

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3

Oxygenation is the process of oxygen diffusing passively from the ______ to the ________ ________, where it binds to _______ in red blood cells or dissolves into the plasma.

- alveolus

- pulmonary capillary

- hemoglobin

4

Oxygen delivery is the rate of oxygen transport from the ______ to the _______ tissues.

- lungs

- peripheral

5

Oxygen consumption is the _______ at which oxygen is removed from the blood for use by the tissues.

- rate

6

There are numerous ways to determine whether oxygenation is impaired and at risk of being insufficient to meet the metabolic requirements of the peripheral tissues. Name 4 of them.

- arterial oxygen saturation (SaO2)

- arterial oxygen tension (PaO2)

- alveolar to arterial (A-a) oxygen gradient

- PaO2/FiO2 ratio

7

A low partial pressure of oxygen in the blood is termed _______.

- hypoxemia

8

What are 5 causes of hypoxemia?

- hypoventilation

- ventilation-perfusion (V/Q) mismatch

- right-to-left shunts

- diffusion limitation

- reduced inspired oxygen tension