28 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
- Differential Diagnosis ... Algorithm Ventilation ... • Interstitial lung ... Abnormalities • Chest ... #Hypoxia #Differential
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... A-a Gradient Normal ... neuromuscular disease, ↓ chest ... #Hypoxia #Differential ... #pulmonary #Aa
Hypoxemia / Hypoxia - Rapid Response Management Algorithm

Stridor - Upper airway pathology:
 • Anaphylaxis
 • Foreign
Response Management Algorithm ... atelectasis • Lung ... MG, ALS) • ↓ chest ... compliance (e.g., flail chest ... #Hypoxia #differential
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
Chronic Cough - Differential ... Diagnosis Algorithm ... i.e. cancer) • Dyspnea ... (underlying lung ... lymadenopathy, clubbing, chest
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Weakness, Loss of Chest ... Elasticity (flail chest ... , Interstitial Lung ... #Hypoxia #hypoxemia ... #differential #
Pulmonary Function Tests (PFTs) - Interpretation Algorithm
 • Normal
 • Pulmonary Hypertension, Anemia, Carboxyhemoglobinemia
 • Chest
Interpretation Algorithm ... • Normal • ... Carboxyhemoglobinemia • Chest ... • Interstitial Lung ... Interpretation #Algorithm
Hyperacute Hypoxemia - Workup and Management
Differential Diagnosis: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
and Management Differential ... Bronchospasm, Pulmonary ... (JVP, edema), Lung ... POCUS (B-lines, lung ... STAT CXR, CTA Chest
Pediatric Dyspnea - Differential Diagnosis Algorithm
Stridor:
 • Croup
 • Foreign Body
 • Tracheitis
 • Epiglottitis
 •
Pediatric Dyspnea ... - Differential ... Pneumothorax Normal ... Ketoacidosis • Pulmonary ... #Causes #Peds #
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Erythrocytosis) - Differential ... Diagnosis Algorithm ... Chest X-Ray, Shortness ... Snoring Chronic Chest ... #Diagnosis #Algorithm
Asthma vs COPD Presentation and Diagnosis
Asthma:
 • Epidemiology: Age usually < 45, History (personal or family)
Symptoms: Cough, Dyspnea ... , Wheeze, Chest ... Hyperresonance, Hypoxemia ... Cyanosis, Barrel chest ... comparison #Diagnosis #pulmonary