Humidification adds water vapor and sometimes heat to inspired gas to achieve normal inspiratory conditions. It is important to ensure proper mucociliary function and avoid hypothermia, atelectasis, thick secretions, and impaired cilia. The ideal humidification delivers gas at 32-36°C with 30-43 g/m3 of water vapor unaffected by gas flows. Passive humidifiers like heat and moisture exchange filters recycle heat and moisture from expiration to inspiration while active humidifiers have a heated water source. Indications include short term ventilation in hydrated patients; contraindications include thick secretions, low body temperature, or high spontaneous minute ventilation.

1. HUMIDIFIER
PATEL.YASH.GIRISHBHAI

2. WHAT IS HUMIDIFICATION
 It is water vapor and at time, heat added to inspired gas
of achieving near normal inspiratory condition when gas
enters the airway.

3. WHAT IS IT IMPORTANT
 Adequate level of humidity and heat are necessary to
ensure function of mucocillary transport system.
 During mechanical ventilation, humidification is crucial to
avoid-
1. Hypothermia
2. Atelectasis
3. Inspissation of airway secretion
4. Depressed ciliary function

4. WHAT IS IDEAL HUMIDIFICATION
 Inspired gas is delivered into trachea at 32-36 degree C
with content of 30-43 g/m3
 Set temp. remains constant
 Humidification and temperature remain unaffected by
large of fresh gas flows
 Device-simple to use

5. TYPE OF HUMIDIFIERS
 ACTIVE
 Heated humidifier
 Active source of heart and water
 PASSIVE
 Heat and moisture exchange filter (HMEF)
 Passively retains and humidity leaving trachea during
expiration and recycle during next inspiration

6. PASSIVE HUMIDIFIERS
 Device that collects the patients expired heart and
moisture and returns during the following inspiration
“artificial noses”
 Heat and moisture exchangers: device which uses the
principle of heat and moisture exchange only
 Hygroscopic heat moisture exchanger: HHME

7.  HHME-
 Most popular style of artificial nose
 Comprised of a paper or propylene to enhance moisture
conservation

10. INDICATION
 Most useful during short term ventilation, in pt who are
adequately hydrated
 Can be use as o2 therapy device in intubated pt.

11. CONTRAINDICATION
 Pt with thick, copious, or bloody secretion
 Pt with body temp < 32 degree C
 Pt with spontaneous MV > 10L/min
 It should be removed during aerosol treatment

12. HOT WATER HUMIDIFIER
 Water bath temp – thermostatically controlled
 Heated wire may be sited in inspiratory tubing – to
maintain gas temp. and humidity

14. USE
 It is placed in inspiratory tubings
 Care should be taken – inspiratory and not expiratory
tubing
 It should be lower than pt.- to void risk of water running
down tube in to pt.
 Clear tubing should be used – so water can be seen

15. DISADVANTAGE
 Bulky and complex
 More costly than HMEs
 Electrical hazards
 Maintenance cost- control of temp, refilling of reservoir,
cleaing and sterilization after sued

16. COLD WATER HUMIDIFIIER
 Simple, inexpensive
 Inefficient
 Potential source of microbiological contamination
 May cause bronchoconstriction

17. OTHER METHODS OF HUMIDIFICATION
 SYSTEMIC HYDRATION: regular fluid intake prevents
secretions to become tenacious
 STEAM INHALATION: inhalation of the steam is helpful if
they are encouraged to breath deeply.