32 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Gradient = (Patient's Age ... gradient to normal age ... Hypoventilation: CNS of Respiratory ... Fibrosis, Interstitial ... Hypoxia #hypoxemia #differential
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
CT Patterns - Differential ... Hypersensitivity Pneumonitis, Respiratory ... Honeycombing: Idiopathic Pulmonary ... #CT #Patterns #Differential ... #Diagnosis #pulmonary
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
HRCT as seen in fibrosis ... disease (i.e. fibrosis ... predominance: Respiratory ... Diagnosis #Radiology #Pulmonary ... #GroundGlass #Differential
Causes of Pediatric Wheezing - Differential Diagnosis Algorithm
CXR Abnormal:
 • Pulmonary Sequestration
 • Congenital Adenoid Cystic
Pediatric Wheezing - Differential ... Abnormal: • Pulmonary ... Chloride: • Cystic Fibrosis ... Aspiration • GE ... Peds #Pediatrics #Pulmonary
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
Hypoxemic Respiratory ... Failure - Differential ... lung diseases, pulmonary ... failure • There are ... Failure #hypoxia #Differential
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
• Idiopathic pulmonary ... fibrosis (IPF), ... pneumonia (COP), Respiratory ... ILD #diagnosis #differential ... #pulmonary #causes
Hypoxemia vs Hypoxia
Hypoxemia - Partial pressure of arterial oxygen (PaO2) is below normal
Hypoxia - Insufficient oxygen
hypoxemia - Tissues are ... hypoxia #hypoxemia #differential ... #diagnosis #comparison ... #pulmonary
Asthma vs COPD Presentation and Diagnosis
Asthma:
 • Epidemiology: Age usually < 45, History (personal or family)
Epidemiology: Age ... curve, Low peak expiratory ... Epidemiology: Age ... #Asthma #COPD #comparison ... #Diagnosis #pulmonary
Asthma: immunopathogenesis. 
Allergens attach to, and are taken up by, dendritic cells that he the respiratory
attach to, and are ... cells that he the respiratory ... B cells. which differentiate ... and release IgE ... Pathophysiology #Pulmonary
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Respiratory or Metabolic ... Differentials? ... acidosis Step 5 - Differential ... Classically” noted with pulmonary ... Base #Gas #VBG #differential