PFT


TLC
Rv
Vc
FEV1/FVC < 70 % (Normal) > 70% ( ↑ )
FEV Normal
 
OBSTRUCTIVE

RESTRICTIVE
DLco 90% (Normal) 40% ( ) 90% (Normal) 40% ( )
  Asthma VS Chronic Bronchitis Emphysema Extra-Pulmonary Restrictive Disease: Interstitial Lung Disease:

Bronchodilator Test (B2-agonist)
Old Pt
Young Pt
Restrictive lung Dz with NORMAL diffusion capacity
- Guillan Barre Syndrome
- ALS
- Kyphoscoliosis
- Morbid Obesity
Pneumoconeosis Sarcoidosis ARDS
- Fibrosis
- Silicosis
- Asbestosis > Mesothelioma, Bronchogenic CA
- Berylliosis
- non-caseating granuloma
- Ca
- ACE in blood
Diffuse Alveolar Damage
unresponsive to 100% O2

Cause:
Trauma, Sepsis, lung infection, pancreatitis

X-Ray: White out
Condition REVERSED NOT reversed Smoker Alpha-1 anti-trypsyn disease

PAS (+)
All have "ground glass pattern"
Test: CXR = Diffuse reticular pattern
Dx: High resolution CT
Confirm: Biopsy
ASTHMA Chronic Bronchitis/COPD
- Eosinophils & IgE 3 consec. Mo in at least 2 consec. Yrs.





 
DLco
Abnormal PFT  Normal PFT
TLC, Rv, Vc
FEV1/FVC < 80% (Normal)
FEV
TLC, Rv, Vc
FEV1/FVC > 90% ()
Normal FEV
Obstructive Lung Disease Restrictive Lung Disease Pulmonary Embolism
Emphysema Interstitial Lung Disease
  hypersensitivity pneumonitis