19 results
Oxygen Delivery Systems
Nasal Cannula:
 • Flow: 1 - 6 L/min
 • FiO2: 25 - 40% (-4%/L
of flow) Face Mask ... : 40 - 60% Device ... ~40% Venturi Mask ... respiratory #support #devices ... #management #pulmonary
Mask Oxygen Delivery Devices

Simple Mask aka Hudson's Mask:
 • Flow 6-10 LPM
 • FiO2 35-50%
Face Tent:
Devices Simple ... 6-10 LPM • FiO2 ... oxygen ambient air ... Oxygen #Delivery #Devices ... #management #pulmonary
Oxygen Delivery by Device

Nasal Cannula 
• Indicated for low-flow, low-percentage supplemental oxygen. 
• Flow rate of
Oxygen Delivery by Device ... high percentage FiO ... entrainment of room air ... Pulmonary #Equipment #Devices ... #Management
Oxygen Delivery Devices
1. Flow is a variable describing the movement of a volume of gas over
Oxygen Delivery Devices ... resulting in an FiO2 ... more predictable FiO2 ... NRB) • Venturi Mask ... Flow #Comparison #management
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = [FiO2 ... (assumes Room Air ... chest) • Low PiO2 ... Elevation, Low Fio2 ... Disease and more • Diffusion
Nasal Oxygen Delivery Devices
Nasal cannula can be used to deliver supplemental O2. Conventional nasal cannula are
Oxygen Delivery Devices ... rates & moderate FiO2 ... entrain ambient air ... Oxygen #Delivery #Devices ... #management #pulmonary
CPAP Troubleshooting Tips
1. Wrong size/style mask → try a different mask, nasal pillows
2. Trouble getting used
tolerating forced air ... → use device with ... noise → check air ... filter, device ... Troubleshooting #Tips #management
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
Diagnosis and Management ... 1) or anatomic shunt ... Arterial blood gas (ABC ... older) on room air ... SpO2 > 88% • Management
Increased Airway Pressure - Guidelines for Crises in Anaesthesia

Using these steps from start to end should
check measured FiO2 ... Confirm airway device ... whether airway device ... rate, rhythm, perfusion ... Checklist #Diagnosis #Management
Intraoperative Hypertension - Guidelines for Crises in Anaesthesia
Hypertension is most commonly due to inappropriate depth of
check measured FiO2 ... position of airway device ... Confirm airway device ... rate, rhythm, perfusion ... Checklist #Diagnosis #Management