9 results
Flow Volume Loops - Common Patterns
A. Normal
B. Emphysema
C. Unilateral Main Stem Bronchial Obstruction
D. Fixed Upper Airway
Loops - Common Patterns ... Restrictive Parenchymal Lung ... Diagnosis #PFTs #Spirometry ... #FlowVolume #Loops ... #Patterns #pulmonary
First-line therapies for Asthma, Asthma-COPD Overlap and COPD

The diagnosis of COPD, asthma, and ACO initially requires
of the type and pattern ... symptoms, and spirometry ... summary of the differential ... agonist; LAMA = long-acting ... Overlap #FirstLine #Differences
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... includes abnormalities ... result in decreased lung ... - Emphysema - Lung ... LowAttenuation #Differential
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
of Hypoxemia- Differential ... Airway Disease (Asthma ... • Interstitial lung ... • Chest Wall Abnormalities ... Hypoxemia #Hypoxia #Differential
Abnormalities in Rate and Rhythm of Breathing 
Normal 
The respiratory rate is about 14—20 per min
Abnormalities in ... including restrictive lung ... may show this pattern ... Breathing In lung ... Causes include asthma
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
or interstitial lung ... location of the abnormalities ... in ground glass pattern ... #GroundGlass #Differential
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
hemorrhage (DAH), asthma ... pulmonary nodules, asthma ... sparing of the lung ... • IF staining patterns ... Renal #Syndromes #differential
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
pulmonary and renal abnormalities ... Eosinophilia, asthma ... Blood pressure difference ... - (C-ANCA) pattern ... - (P-ANCA) pattern
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis - Differential ... • Interstitial lung ... slow onset and pattern ... Conduction system abnormalities ... #rheumatology #differential