Pulmonary functions testing

Question 1

Indications for pulmonary functions testing (PFT)

Answer 1

Evaluation of signs/symptoms, progression of people at risk of lung disease (cough, dyspnea, cyanosis, wheezing, hyperinflation, hypoxemia, hypercapnia)
Monitor effectiveness of therapy
Evaluate preoperative patients

Question 2

Contraindications for PFT

Answer 2

Contraindicated in patients w/o symptoms and who have congestive heart failure

Question 3

Obstructive patterns in the results of a PFT

Answer 3

A low FEV1/FVC ratio (the forced expiratory volume in 1 sec divided by the forced vital capacity) indicates an obstructive pattern

Question 4

Restrictive patterns in the results of a PFT

Answer 4

If the FEV1/FVC ratio is normal a low forces vital capacity value indicates a restrictive pattern

Question 5

Spirometry

Answer 5

Measurement of the air moving in and out of the lungs during various respiratory maneuvers. Determines how much air can be inhaled, exhaled and how fast.

Question 6

Spirometry

Answer 6

Measurement of the air moving in and out of the lungs during various respiratory maneuvers. Determines how much air can be inhaled, exhaled and how fast.

Question 7

The three most important measures are

Answer 7

The FVC, FEV1 and the FVC/FEV1 ratio