Humidity

Question 1

Humidity

Answer 1

Water in gaseous state

Question 2

What is the amount of water vapor

Answer 2

Gas can

Question 3

Humidity is determined by

Answer 3

Temperature of gas & sometimes referred to as capacity

Question 4

When gas has reached its potential at that temperature?

Answer 4

Saturated

Question 5

Amount of water weight held in gas and expressed in mg/L

Answer 5

Absolute humidity

Question 6

What is the relative humidity equation

Answer 6

Absolute humidity divided by potential humidity x 100

Question 7

Facts of Alveolar gas

Answer 7

1. 100% relative humidity
2. At 37 C alveolar gas hold approximately 44 mg/L
3. At 37 C and 100% R.H. the pressure exerted by water vapor is 47mmHg

Question 8

Amount of humidity in alveolar gas minus the amount of humidity inspired

Answer 8

Humidity Deficit

Question 9

Humidity supplied to inspired gas by nasopharyngeal and oropharyngeal passages

Answer 9

If not supplied by the nose,moisture will be taken from tracheal mucosal blanket which dries and thickens secretions

Question 10

Inadequate humidification can cause

Answer 10

1. Decrease cilia activity
2. Decrease movement of mucous
3. Inflammation and necrosis of pulmonary epithelium
4. Retention of secretions
5. Bacterial culture media
6. Atelectasis
7. Pneumonia

Question 11

Indications for humidification

Answer 11

1. To prevent dry gas from drying mucosa

2. To provide near body humidity when upper airway function is impaired or bypassed

Question 12

T or F Humidity adds moisture to the respiratory tract

Answer 12

True