106 results
Oxygen Delivery by Device

Nasal Cannula 
• Indicated for low-flow, low-percentage supplemental oxygen. 
• Flow rate of
high percentage FiO ... retention of exhaled gases ... • Uses either ... desired FiO ... #FiO2 #Pulmonary
Mask Oxygen Delivery Devices

Simple Mask aka Hudson's Mask:
 • Flow 6-10 LPM
 • FiO2 35-50%
Face Tent:
Mask Oxygen Delivery ... uses a small valve ... reservoir increases delivered ... 10-15 LPM • FiO2 ... #Oxygen #Delivery
Oxygen Delivery Systems
Nasal Cannula:
 • Flow: 1 - 6 L/min
 • FiO2: 25 - 40% (-4%/L
Oxygen Delivery ... - 6 L/min • FiO2 ... of flow) Face Mask ... ~40% Venturi Mask ... rishikumarmd #Oxygen #Delivery
Oxygen Delivery Devices - Comparison
Low Flow:
 • Nasal cannula (1-6L, 24-40% FiO2)
 • Face mask (5-10L,
Oxygen Delivery ... ) • Face mask ( ... Face tent/shovel mask ... ) • Venturi mask ... iMedEducation #Oxygen #Delivery
Low O2 saturation that does not respond to supplemental O2
- Key diagnostic feature (sat < 85%
response to 100% FiO2 ... pulse oximeter causes ... response to 100% FiO2 ... of impaired O2 delivery ... impairment of O2 delivery
Oxygen Delivery Devices
1. Flow is a variable describing the movement of a volume of gas over
Oxygen Delivery ... Oxygen delivery ... resulting in an FiO2 ... more predictable FiO2 ... NRB) • Venturi Mask
Differential Diagnosis of Pleuritic Chest Pain:

Categorized by causes: Cardiac, Pulmonary, MSK, Drug/Toxins, Heme/Onc, Renal, Autoimmune

#Diagnosis #Pleuritic
Differential Diagnosis ... Categorized by causes ... Cardiac, Pulmonary, MSK ... Pleuritic #ChestPain #Causes ... #Differential #
Hypotension - Guidelines for Crises in Anaesthesia

Hypotension is commonly due to unnecessarily deep anaesthesia, the autonomic
hypovolaemia or combined causes ... adequate oxygen delivery ... Adequate oxygen delivery ... check measured FiO2 ... #Hypotension #Differential
Approach to Low Back Pain - Differential Algorithm
- Non-MSK
- Axial / Musculoskeletal
- Radicular
- Systemic Disease (Do
Low Back Pain - Differential ... Algorithm - Non-MSK ... #LowBackPain #Differential ... #Algorithm #Causes
Jaundice - Pathophysiology and Causes

- Amy Chung, MD, MSc @AmyChung 

#Jaundice #Pathophysiology #Differential #Unconjugated #Causes #Diagnosis
Pathophysiology and Causes ... Amy Chung, MD, MSc ... Pathophysiology #Differential ... #Unconjugated #Causes