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management pulmonary diagnosis criticalcare delivery devices differential respiratory workup algorithm anesthesia anesthesiology checklist comparison intraoperative causes support acquired acute ards
Hypoxia and Hypoxemia - Overview Hypoxia - insufficient oxygen delivered to tissues to meet demands Hypoxemia - low
- insufficient oxygen ... - low oxygen in ... ) PIO2 - atmospheric ... oxygen (how much ... diagnosis #causes #pathophysiology
Mask Oxygen Delivery Devices Simple Mask aka Hudson's Mask: • Flow 6-10 LPM • FiO2 35-50% Face Tent:
Mask Oxygen Delivery ... 10-15 LPM • FiO2 ... small valve to mix oxygen ... increases delivered oxygen ... #Oxygen #Delivery
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 ... #FiO2 #Pulmonary
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
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
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) - Respiratory symptoms must have begun within one
of arterial oxygen ... fraction of inspired oxygen ... (PaO2/FiO2). ... severity of the hypoxemia ... mm Hg < PaO2 / FiO2
General schema for respiratory support in patients with COVID-19 Low flow nasal cannula • Typically set at
in more severe hypoxemia ... filter • N95 mask ... for refractory hypoxemia ... patients with PaO2/FiO2 ... #criticalcare #hypoxia
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
Hypophosphatemia and Hypoxia - Pathophysiology ↓ Phosphate leads to ↓ red cell 2,3-DPG and a reduction
Hypophosphatemia and Hypoxia ... - Pathophysiology ... DPG so that the oxygen ... left and makes oxygen ... #pathophysiology
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 ... : avoid hyperoxia ... desaturation prioritise FiO2
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