Notes from NEET topper
Hypoxia:
Definition: Hypoxia refers to a condition where there is an inadequate supply of oxygen to body tissues, leading to oxygen deficiency at the cellular level.
Types of Hypoxia:
a. Hypoxic Hypoxia: This occurs when there is a decrease in the partial pressure of oxygen (PaO2) in the arterial blood, often due to reduced oxygen levels in the air or high altitudes.
b. Anemic Hypoxia: It results from a reduced oxygen-carrying capacity of the blood, typically due to conditions like anemia or reduced hemoglobin.
c. Circulatory Hypoxia: This type of hypoxia is caused by poor circulation, preventing adequate oxygenated blood from reaching the tissues.
d. Histotoxic Hypoxia: It happens when the cells are unable to utilize the oxygen delivered to them, often due to the presence of toxins or metabolic inhibitors.
