Hypoxia / Anoxia

Aasgaduli.blogspot.com

Hypoxia / Anoxia

Definition : Decrease oxygen level in blood or inadequate supply of oxygen to the tissues by the blood are known as Hypoxia.

Causes : 

1. Oxygen tension in arterial blood.
2. Oxygen carrying capacity of blood.
3. Velocity of blood.
4. Utilization of oxygen by the cell.

Classification :

1. Hypoxic hypoxia / Arterial hypoxia:  low oxygen tension in arterial blood.

2. Anemic hypoxia : low oxygen content of blood due to...

               I. Lack of Hb.

              II. CO poisoning. 

3. Stagnant hypoxia / Hypokinetic hypoxia:  decrease rate of blood flow due to its velocity.

4. Histotoxic hypoxia : tissue are unable to use oxygen.

Effects of hypoxia:

1. On nervous system - 

     i. Dullness.

     ii. Dizziness.

    iii. Confusion.

    iv. Convulsion.

2. On digestive system:

    i. Nausea.

   ii. Vomitting.

  iii. Vertigo.

   iv. Loss of appitite.

3. On circulatory system:

    i. Increase heart rate.

   ii. Increase cardiac output.

  iii. Increase blood pressure.

   iv. Cyanosis.

4. On respiratory  system: 

    i. Hyperpnoea.


Download book ( physiology symbulingum)