Investigations and Management

Question 1

What are the methods for diagnosing Asthma?

Answer 1

1. History
2. PEFR monitoring
3. Spirometry
4. Skin prick for allergies
5. Methacholine (synthetic histamine for hyperreactivity)

Question 2

What would PEFR show in an asthmatic?

Answer 2

Variation of at least 20% between morning and afternoon

Question 3

What would Spirometry show in an asthmatic?

Answer 3

Reduced FEV1, normal or reduced FVC

Ratio <0.8

Question 4

What would Methacholine show in an asthmatic?

Answer 4

Increased response suggestive of hypersensitivity

Question 5

What are some risk factors for asthma?

Answer 5

Low BW

FH

Smoking and pollutants

Hygeine hypothesis