[RS] Q.12 Types of dead space.

Ans.

1)  Anatomical dead space: (By fowler’s method)

The volume of gas that remains in all space of respiratory system other than the alveoli and other closely related gas exchange areas, this space is called anatomical dead space.

2)    Physiological dead space: (By Bohr’s equation)

When the alveolar dead space is included with total measurement of dead space is called physiological dead space.

Normally the anatomical and physiological dead space are equal but in person with partially functional or nonfunctional alveoli is some parts of lungs, the physiological dead space will be greater than anatomical dead space. (10 times or 1 to 2 liters).