Flashcards in pulmpath2 Deck (7)
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1
What do obstructive diseases limit?
limitation of airflow
increase in resistance due to partial or complete obstruction
-have trouble letting the air out
2
What does a restrictive disease reduce?
reduces expansion of lung parenchyma
3
What are examples of obstructive airway diseases, how is the FEV1 affected?
Decreased FEV1
-increase in resistance to airflow due to obstruction at any level
EX:
1. emphysema
2. chronic bronchitis
3. bronchiectasis
4. asthma
5. tumor
6. foreign body
4
What are examples of obstructive airway diseases, how is the FEV1 and TLC affected?
Normal FEV1, Decreased TLC
-reduced expansion of lung parenchyma with decrease in total lung capacity
EX:
Chest wall disorders (polio, obesity, pleural disease, kyphoscoliosis)
Interstitial/ Infiltrative diseases (ARDS, dust disease, interstitial fibrosis)
5
What does a pulmonary function curve look like in obstructive vs. restrictive lung disease?
Obstructive-shift in curve but size remains the same
Restrictive-same shape but smaller
6
What are 4 key obstructive pulmonary diseases?
1. Asthma
2. chronic bronchitis
3. emphysema
4. bronchiectasis
7
