45 results
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Diagnosis Algorithm ... neuromuscular disease, ↓ chest ... Right-to-Left Shunt: Cardiac ... #Diagnosis #Algorithm ... #pulmonary #Aa
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... - Differential Diagnosis ... Abnormalities • Chest ... #Diagnosis #Algorithm ... #Causes #Pulmonary
Hyperacute Hypoxemia - Workup and Management
Differential Diagnosis: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
- Workup and Management ... Bronchospasm, Pulmonary ... STAT CXR, CTA Chest ... #Hypoxia #Workup ... #treatment #criticalcare
Chest Pain - Diagnosis and Workup Algorithm

History and Exam
Acute life-threatening causes:
 • Acute myocardial infarction
 •
Chest Pain - Diagnosis ... Pneumothorax • Pulmonary ... embolism • Cardiac ... EKG • Bedside ultrasound ... MatthewHoMD #Chest
Chest Pain - Differential Diagnosis Framework

Cardiovascular Causes of Chest Pain:
 • Myocardium:
	- Myocarditis
	- CAD/ACS
	- Valvulopathy
	- Myopericarditis
Chest Pain - Differential ... - Tamponade Pulmonary ... Causes of Chest ... Pain: • Chest ... • Pleura: - Effusion
An Approach to Acute Dyspnea - Diagnostic Framework

From the HPI, PMH, vitals, focused physical exam (e.g.
Acute Dyspnea - Diagnostic ... physical exam (e.g. cardiac ... , pulmonary, and ... exams), and the chest ... Dyspnea #Acute #Workup
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
- Differential Diagnosis ... Pericardial • Effusion ... • Cardiac Tamponade ... Thickening/Masses Chest ... #Differential #Diagnosis
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Weakness, Loss of Chest ... Elasticity (flail chest ... Disease and more • Diffusion ... #Hypoxia #hypoxemia ... #differential #diagnosis
Chest Pain - Differential Diagnosis Algorithm
Cardiovascular Causes:
 - Outflow Obstruction
     • Aortic
Chest Pain - Differential ... Diagnosis Algorithm ... Embolism (chest ... Hypertension - Chest ... • Pleural Effusion
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
Diagnosis is generally ... evidence of a chest ... e.g., CXR, CT, ultrasound ... production, pleuritic chest ... signs (tachypnea, hypoxemia