18 results
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... Diagnosis Algorithm ... neuromuscular disease, ↓ chest ... #Hypoxia #Differential ... #pulmonary #Aa
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
- Differential Diagnosis ... Algorithm Ventilation ... Abnormalities • Chest ... #Hypoxia #Differential ... #Diagnosis #Algorithm
Hypoxemia / Hypoxia - Rapid Response Management Algorithm

Stridor - Upper airway pathology:
 • Anaphylaxis
 • Foreign
Response Management Algorithm ... pneumonia • Water: pulmonary ... #Hypoxia #differential ... Diagnosis #Management #Algorithm ... #rapid #pulmonary
COVID-19 Hypoxia Management

Indication for endotracheal intubation?
Tolerating supplemental oxygen?
Consider HFNC
Not tolerating HFNC or HFNC is not available?
Consider
COVID-19 Hypoxia ... CONSIDER: a trial ... management #schema #criticalcare ... #hypoxia #failure ... #algorithm #survivingsepsis
Hyperacute Hypoxemia - Workup and Management
Differential Diagnosis: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
and Management Differential ... Aspiration, Flash Pulmonary ... Bronchospasm, Pulmonary ... STAT CXR, CTA Chest ... Management #treatment #criticalcare
Proposed Respiratory Support Algorithm in COVID19

The ‘intubate early’ paradigm, where patients who “fail” low flow oxygen
Respiratory Support Algorithm ... Also, a low threshold ... management #schema #criticalcare ... #hypoxia #failure ... #algorithm
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Weakness, Loss of Chest ... Elasticity (flail chest ... Left Shunt - Anatomic ... #Hypoxia #hypoxemia ... #differential #
General schema for respiratory support in patients with COVID-19
Low flow nasal cannula
 • Typically set at
patients with COVID ... • Proning is a ... respiratory #support #COVID19 ... management #schema #criticalcare ... #algorithm
Diagnostic approach to the admitted patient with possible COVID-19

Initial evaluation
- Chest X-ray
- Lung ultrasound (thorough "lawn-mower"
with possible COVID ... evaluation - Chest ... look for focal a-lines ... - CBC with differential ... #algorithm #schema
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
consistent with pulmonary ... chest radiograph ... lung collapse, or pulmonary ... severity of the hypoxemia ... Criteria #Diagnosis #CriticalCare