23 results
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... Diagnosis Algorithm ... neuromuscular disease ... (↑Shunting), ↓Perfusion ... #Diagnosis #Algorithm
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... - Differential Diagnosis ... Mismatch • Airway Disease ... • Parenchymal Disease ... #Diagnosis #Algorithm
Acute Hypoxemia - Differential Diagnosis
 • Hyperacute: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
- Differential Diagnosis ... Hemorrhage • Impaired Diffusion ... Pulmonary Embolism, Emphysema ... Shock • Airway Disease ... #Diagnosis #causes
Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
 -
Features of Pulmonary Diseases ... Atelectasis - Emphysema ... Pneumothorax - Effusion ... Reticular - Emphysema ... #Differential #Diagnosis
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
• Pleural effusion ... Parapneumonic effusion ... ; empyema, M.tuberculosis ... (NHL, primary effusion ... #differential #diagnosis
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
These include: - Emphysema ... Honeycombing Most diseases ... #Diagnosis #Radiology ... TractionBronchiectasis #Cysts #Emphysema ... #SignetRing #RadiologyAssistant
Pleural effusion is seen in:
1. Pulmonary edema
2. Lymphangitic spread of carcinoma - often unilateral
3. Tuberculosis
4. Lymphangiomyomatosis
Pleural effusion ... Asbestosis #Diagnosis ... Pulmonary #Pleural #Effusion ... #PleuralEffusion ... #Differential #RadiologyAssistant
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
- Differential Diagnosis ... Interstitial lung diseases ... direction leads to hypoxemia ... Respiratory #Failure #hypoxia ... #Differential #Diagnosis
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Smoking related diseases ... (centrilobular emphysema ... Pulmonary edema #Diagnosis ... #Upper #Lower #RadiologyAssistant
Causes of Dyspnea - Differential Diagnosis Algorithm
Cardiac:
 • Dysrhythmia
 • Ischemia
 • Cardiomyopathy
 • Valvular disease
- Differential Diagnosis ... Atelectasis • Emphysema ... Interstitial lung disease ... Pleura: • Pleural effusion ... #Differential #Diagnosis