MP324 - PULMONARY FUNCTION TESTING

Question 1

FEV1

Answer 1

volume of air expelled in the first second of a forced expiration

can determine the effects of bronchodilators on the airways

Question 2

FVC (forced vital capacity)

Answer 2

total volume of air exhaled with maximum effort

Question 3

FEV1/FVC

Answer 3

The ratio of the forced expiratory volume in the first one second to the forced vital capacity of the lungs

Question 4

grade 1 MRC dyspnoea scale

Answer 4

not troubled except on strenuous exercise

Question 5

grade 2 MRC dyspnoea scale

Answer 5

short of breath when hurrying on the flat or walking up a slight hill

Question 6

grade 3 MRC dyspnoea scale

Answer 6

walks slower than most on the flat, stops after about a mile, or stops after 15min at own pace

Question 7

grade 4 dyspnoea scale

Answer 7

stops for breath after walking 100 yards or a few min of the level

Question 8

grade 5 MRC dyspnoea scale

Answer 8

too breathless to leave the house, or when undressing

Question 9

spirometry is used in people with asthma or COPD to…

Answer 9

• diagnose airflow obstruction in patients with respiratory symptoms
• monitor disease progression, rehabilitation and treatment gains

Question 10

SVC (slow vital capacity)

Answer 10

maximal amount of air exhaled steadily from fill inspiration to maximal expiration

not time-dependent

Question 11

can help differentiate between restrictive and obstructive pulmonary disease

Answer 11

FEV1/FVC ratio

Question 12

spirometry values for obstructive disorder

Answer 12

FEV1 reduced <80% predicted
FEV1/FVC reduced <0.7

Question 13

spirometry values for restrictive disorder

Answer 13

FEV1 reduced <80%
FVC reduced <80%
FEV1/FVC normal >0.7

Question 14

PEFR (peak expiratory flow rate)

Answer 14

volume of air forcefully expelled from the lungs in one quick inhalation

used for asthma only but spirometry preferred for diagnosis