Question

1. What are the main components that predict lung volumes? Flow rates?

3. What factors could negatively affect peak expiratory flow?

4. What factors could positively affect forced vital capacity?

5. How is COPD typically diagnosed using PFT? What are the parameters, and what level of change is required for diagnosis?

6. Which of the measures you performed may be subject to changes with greater fitness? Why?

Answer 1

1. Lung volume can be predicted by determination of functional residual capacity (quantity of air that remained in the lungs after exhalation).

3. The diease like asthma and chronic obstructive pulmonary disease adversly affact respiratory flow arte.

4. The forced vital capacity is influnced by body built, gender and physiacl condition of the body.

5. Air is forcefully exhaled in the spirometer(forced vital capacity), After this peak expiratory flow rate is determined.

6. The concept of fitness is to be in the shape and size. The body remains healthy. Forced expiratory volume may be subjected to increase in a fit person.