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Oxygen delivery (Categories of hypoxia (Problems with transport across…
Oxygen delivery
Categories of hypoxia
Hypoxic hypoxia (low fi02/ventilation)
Identify fi02/vent adequacy, auscultate lungs
Increase fi02/vent
Problems with transport across lung
Too much/too little PEEP/CPAP
Too low BP for lung perfusion
Suction
Anaemic hypoxia
Low Hb for transport - Hb level and transfuse
Stagnant hypoxia - reduced blood flow
Monitor CO, lactate, consider inotropes
Cytotoxic hypoxia - problem with utilization
Choosing an oxygen delivery device
fi02 required
Factors that influence the fi02 delivered to the patient by device
Patient factors
Presence of respiratory pause
Tidal volume
Inspiratory flow rate
Device factors
Volume of mask
Air vent size
Tightness of fit
Oxygen flow rate
Patient factors
Pre existant conditions
Ventilatory patterns
Age neonates/paeds
Patient comfort/preference
Anaesthetics/ICU
Humidification
02 requirements
Setting/resources available
Surgery
Neurosurgery
Abdominal surgery
ENT
Options available for 02 therapy postop
Variable performance/low flow 02 delivery devices
Fixed performance/high flow 02 delivery devices