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Pulmonary Function Lecture

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Questions and Answers

What is the primary purpose of measuring FEV1 in a pulmonary function test?

To determine the total lung capacity of a patient
To assess the severity of lung disease (correct)
To evaluate the effectiveness of bronchodilator therapy
To diagnose obstructive lung disease

What is the significance of a low FEV/FVC ratio in a pulmonary function test?

It is indicative of an obstructive lung disease (correct)
It suggests a possible diagnosis of asthma
It indicates a restrictive lung disease
It is a sign of a mild obstructive lung disease

What is the purpose of measuring FEF 25-75 in a pulmonary function test?

To evaluate the effectiveness of bronchodilator therapy
To determine the total lung capacity of a patient
To measure the small airways and detect mild obstruction or early asthma (correct)
To diagnose obstructive lung disease

What is the significance of residual volume in patients with COPD?

It increases due to air trapping, leading to a higher total lung capacity (C) Signup and view all the answers

What is the instruction given to patients regarding short-acting inhalers before a pulmonary function test?

They should not take their medication the day of the test (D) Signup and view all the answers

What is the primary indication of a mixed restrictive and obstructive disorder?

FVC is lower than LLN and FEV1/FVC is less than 0.7 (D) Signup and view all the answers

What is the primary purpose of a full PFT in restrictive disorders?

To measure the total lung capacity and DLCO (B) Signup and view all the answers

What is the significance of a low DLCO in a patient with normal spirometry?

It is indicative of early interstitial lung disease (A) Signup and view all the answers

What is the primary indication of air trapping in a patient with COPD?

RV is greater than 120% of predicted (B) Signup and view all the answers

What is the primary purpose of a 6-minute walk test?

To measure the distance walked in 6 minutes (C) Signup and view all the answers

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