Lung Pathologies

Question 1

FEV1/FVC

Answer 1

Obstruction:
>100% = possible normal variant
70-100% = mild obstruction
60-70% = mod obstruction
50-60% = mod - severe obstruction
<50% = severe obstruction

Question 2

Obstructive Lung Disorder

Answer 2

difficulty getting air OUT

decr expiratory flows

Question 3

Restrictive Lung Disorder

Answer 3

difficulty getting air IN

Question 4

Primary indicator of obstructive impairment

Answer 4

FEV1/FVC <70%

Question 5

Restrictive ventilatory impairment is characterized by?

Answer 5

Reduced lung volumes:
TLC
FVC
FEV1

and relatively normal expiratory flow rates

Question 6

What value of FEV1/FVC indicates restrictive lung disorder?

Answer 6

Normal or >80%

Question 7

Examples of obstructive pathologies

Answer 7

Asthma
Emphysema
Chronic bronchitis
Cystic fibrosis

Question 8

Examples of restrictive lung disorders

Answer 8

Myasthenia gravis
Pulmonary fibrosis
Interstitial lung disease
Pleural diseases
Chest wall deformities
Obesity
Pregnancy
Neuromuscular disease
Tumor