Humidification, types, methods, supplies, indications.


 Air is moistened because it is passed through the water vapour, Patient is asked to inspire the air by face mask or by the mouth piece. 

• Normally air passing through nose& pharynx is continuously moistening the respiratory mucous, if this is inefficient cilial action is impaired & secretions are viscid so need of humidifier to loosen viscid & thick secretions. 

• Humidification is moistening of air & gases, this is normal function of upper respiratory tract if this is inefficient then artificial humidifier is required

Indications-

1) Patient with tracheostomy/ endotracheal tube 

 2) patient with oxygen mask     

 3) when thick secretions

Choice of humidifier

Ultrasonic type- patient with dry gas

Disposal type- patient with respiratory failure like in chronic bronchitis, asthma, emphysema 

Method

Humidification given by wide boring tube,,,,, short period given before chest clearance done for patient who is not intubated but breathe freely. It is nebulizer method--- face mask, mouth piece,,,,,,,, patient with trachetube/ endotube Brompton tube( t tube) used , this is a plastic tube & can fit into humidification wide boring tube other one is disposable tracheostomy mask made by plastic which is flexible,,,,,, A patient with intermittent positive pressure ventilation also need humidification fitted with ventilators. So heated humidifiers of about 34° centigrade used & kept at endotracheal tube/ tracheostomy

Types

=Supplies  

•Ambient temperature vapour supplier  

•Heated vapour supplier s

• Ambient aerosol supplier

• heated aerosol suppliers

= Installation --

- water is added to the airways by syringe, dripset Or pump called installation

Supplies-

-- Ambient temperature vapour supplier---in this type humidification obtained through water with tiny gas bubbles at room temperature

Heated vapour suppliers---in this hot water is taken with gas & patient tube is heated in fischer- paykell device to prevent temperature loss. A thermometer is attached so it gives feed back about delivering gas at over 39° the thermometer has cuff off mechanism  if temperature is more than this as it will not be tolarated by patient

Ambient aerosol suppliers---this works on brrnouilli principle subtypes of aerosols are bird, Ohio, bard, inspiron. Mist of liquid water produced by 3ways-

a) high pressuregas jet on an anvil

b) high speed spinning disc

c) Ultrasonic vibratory crystal

Air is forced through film of water that produces dense must

Heated serosol suppliers- in this type heated water is used along with nebulizing drug, this also works on Bernouilli principle & care of thermal safety is taken 

Thank you 

Physioguide by divyaA

Physioguide by divyaA

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