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Oxygen delivery & ABG interpretation made easier with this simple colour-coded table. Please share, and print
Devices #Interfaces #FiO2 ... FaceMask #NRB #FlowRates
Mask Oxygen Delivery Devices

Simple Mask aka Hudson's Mask:
 • Flow 6-10 LPM
 • FiO2 35-50%
Face Tent:
Flow 6-10 LPM • FiO2 ... 10-15 LPM • FiO2 ... Flow 2-15 LPM • FiO2 ... 10-15 LPM • FiO2 ... 10-15 LPM • FiO2
Oxygen Delivery Systems
Nasal Cannula:
 • Flow: 1 - 6 L/min
 • FiO2: 25 - 40% (-4%/L
- 6 L/min • FiO2 ... of flow) Face Mask ... - 10 L/min • FiO2 ... - 15 L/min • FiO2 ... ~40% Venturi Mask
Oxygen Delivery by Device

Nasal Cannula 
• Indicated for low-flow, low-percentage supplemental oxygen. 
• Flow rate of
high percentage FiO ... Venturi Mask (venti-mask ... set to desired FiO2 ... deliver desired FiO ... Oxygen #Delivery #FiO2
Oxygen Delivery Devices - Comparison
Low Flow:
 • Nasal cannula (1-6L, 24-40% FiO2)
 • Face mask (5-10L,
(1-6L, 24-40% FiO2 ... ) • Face mask ( ... 5-10L, 35-60% FiO2 ... Face tent/shovel mask ... ) • Venturi mask
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
week of a known clinical ... inspired oxygen (PaO2/FiO2 ... mm Hg < PaO2 / FiO2 ... mm Hg < PaO2 / FiO2 ... Severe - PaO2 / FiO2
Mechanical ventilation in obese patients according to the i-STAR Algorithm
Intubate
 • Anticipate difficult airway management and
and difficult mask ... Gradually lower Fi02 ... recruitment • FiO2 ... desaturation prioritise FiO2
Hypotension in Anesthesiology - Differential Diagnosis and Management 

Initial checklist: 
 - Verify BP (e.g. surgeon
Inform surgeon (ask ... - Increase FiO2
Clarke's Test (Patellar Grind Test)

Indicates Patellofemoral dysfunction.
 - Patient with knee in extension. Push posterior on
of patella then ask ... Patellar #Grind #clinical ... Patellofemoral #msk
5th metatarsal distal shaft fracture - Fracture detection on MSK ultrasound

The Ultrasound Site - MSK ultrasound
Fracture detection on MSK ... Ultrasound Site - MSK ... shaft #fracture #MSK ... POCUS #Ultrasound #Clinical