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Non-invasive ventilation - Coggle Diagram
Non-invasive ventilation
Definition
Provision of ventilatory support
Via the upper airway
Classification
Face mask
Helmet
Nasal mask
NIV vs ETT
Advantages
Reduced VAP
Reduced airway complications
No requirement for induction /sedation
Reduced ICU/hospital LOS
Disadvantages
Pressure sores
Barotrauma
Can delay definitive management
NIV vs NHFO
Advantages
Can generate Fi02 1, PEEP 7 at 60 litres
MOre comfortable
Better compliance
Disadvantages
Variable PEEP - drops when patietns mouth is open
Epistaxis
Secretions
Gastric distension
Indications
COPD
pH<7.35
pC02 >6.5
RR >23
Post bronchodilator
NMD
RR>20
VC <1 litre
Obesity
Same as COPD
Daytime pac02 >6
Somnalence
Cardiogenic oedema
Contraindications
Abosolute
Facial deformity
Burns
Fixed upper airway obsruction
Relative
pH <7.15
GCS <8
Cognitive impairment
Vomiting
Multiorgan failure
GI haemorrhage