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Oxygen Delivery Systems and Approximate FiO2:
#Management #SupplementalO2 #Oxygen #Delivery #Devices #Interface #FiO2 #NonRebreather #HFNC #NasalCannula #Simple
Oxygen Delivery ... and Approximate FiO2 ... #Management #SupplementalO2 ... #Oxygen #Delivery ... Devices #Interface #FiO2
Oxygen Delivery by Device

Nasal Cannula 
• Indicated for low-flow, low-percentage supplemental oxygen. 
• Flow rate of
low-percentage supplemental ... higher percentage supplemental ... high percentage FiO ... retention of exhaled gases ... • Uses either
Oxygen delivery & ABG interpretation made easier with this simple colour-coded table. Please share, and print
Oxygen delivery ... #Management #SupplementalO2 ... #Oxygen #Delivery ... Devices #Interfaces #FiO2
Mask Oxygen Delivery Devices

Simple Mask aka Hudson's Mask:
 • Flow 6-10 LPM
 • FiO2 35-50%
Face Tent:
Mask Oxygen Delivery ... A venturi mask uses ... small valve to mix oxygen ... increases delivered oxygen ... nickmmark #Mask #Oxygen
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
DECREASED INSPIRED OXYGEN ... Improves with supplemental ... oxygen • Causes ... not improve with supplemental ... oxygen #Hypoxemic
Oxygen Delivery Systems
Nasal Cannula:
 • Flow: 1 - 6 L/min
 • FiO2: 25 - 40% (-4%/L
Oxygen Delivery ... - 6 L/min • FiO2 ... - 10 L/min • FiO2 ... - 15 L/min • FiO2 ... rishikumarmd #Oxygen
Nasal Oxygen Delivery Devices
Nasal cannula can be used to deliver supplemental O2. Conventional nasal cannula are
Nasal Oxygen Delivery ... used to deliver supplemental ... rates & moderate FiO2 ... achieving a higher FiO2 ... nickmmark #Nasal #Oxygen
Low O2 saturation that does not respond to supplemental O2
- Key diagnostic feature (sat < 85%
not respond to supplemental ... response to 100% FiO2 ... pulse oximeter causes ... response to 100% FiO2
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
of arterial oxygen ... fraction of inspired oxygen ... (PaO2/FiO2). ... mm Hg < PaO2 / FiO2 ... mm Hg < PaO2 / FiO2
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
- insufficient oxygen ... Hypoxemia - low oxygen ... type of hypoxia) PIO2 ... - atmospheric oxygen ... differential #diagnosis #causes