63 results
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Erythrocytosis) - Differential ... Positive - Low/Normal ... Cyanosis without Pulmonary ... Apnea • Chronic Pulmonary ... Erythrocytosis #Differential
Diffuse consolidation
The most common cause of diffuse consolidation is pulmonary edema due to heart failure.
This is
consolidation is pulmonary ... cardiogenic edema, to differentiate ... may still have a normal ... a superimposed pulmonay ... Consolidation #Differential
Noncardiogenic Pulmonary Edema - Differential Diagnosis Framework

NCPE Pathophysiology:
Noncardiogenic pulmonary edema occurs because of excessive pulmonary capillary
Edema - Differential ... • Heart size: Normal ... ECHO: • Normal ... chamber size • Normal ... #edema #NCPE #differential
Causes of Hemoptysis - Differential Diagnosis Algorithm
Massive Hemoptysis (>I00 mL in 24 hours)
 • Malignancy
 •
of Hemoptysis - Differential ... Malformation Normal ... Bronchiectasis • Pulmonary ... Vascular • Pulmonary ... #Hemoptysis #Differential
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... A-a Gradient Normal ... Hypoxemia #Hypoxia #Differential ... Diagnosis #Algorithm #pulmonary
Causes of Pediatric Wheezing - Differential Diagnosis Algorithm
CXR Abnormal:
 • Pulmonary Sequestration
 • Congenital Adenoid Cystic
Pediatric Wheezing - Differential ... Algorithm CXR Abnormal ... : • Pulmonary ... Wheezing #Wheeze #Differential ... Peds #Pediatrics #Pulmonary
Causes of Pleural Effusion - Differential Diagnosis Algorithm
Exudative Effusion:
 - Pulmonary
     •
Pleural Effusion - Differential ... Effusion: - Pulmonary ... , SLE) • Pulmonary ... Upper Limit of Normal ... Pleural #Effusion #Differential
Shock - Differential Diagnosis Algorithm
Warm Extremities
 - Distributive Shock - Low JVP
Shock - Differential ... Obstructive Shock - Normal ... Sounds • Pulmonary ... #Hypotension #Differential
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
/0.8)] - PaO2 Normal ... A-a gradient to normal ... Intracardiac, Pulmonary ... V/Q Mismatch: Pulmonary ... Hypoxia #hypoxemia #differential
Hypoxemia vs Hypoxia
Hypoxemia - Partial pressure of arterial oxygen (PaO2) is below normal
Hypoxia - Insufficient oxygen
PaO2) is below normal ... hypoxia #hypoxemia #differential ... diagnosis #comparison #pulmonary