Four Types of Hypoxia

Question 1

Anoxic hypoxia or diffusion hypoxia

Answer 1

Due to lack of oxygen in the air, or due to a gas exchange problem at the alveolar membrane level

Question 2

Anemic hypoxia

Answer 2

Due to decrease in oxygen binding capacity, usually because of a low hemoglobin

Question 3

Stagnant hypoxia

Answer 3

Due to a decrease in blood circulation, as in cardiac arrest

Question 4

Histotoxic hypoxia

Answer 4

Due to decreased extraction of oxygen from circulation by the tissues, as in cyanide poisoning