Lung Function Assessment Questions

This video tutorial covers various respiratory efficiency tests, starting with spirometry to measure lung volumes and capacities using the Hutchison spirometer. It explains how to measure tidal volume, expiratory reserve volume, inspiratory reserve volume, and vital capacity. The video also discusses additional tests like maximum breathing capacity, respiratory minute volume, breath holding test, expiratory pressure, and the 40 mm Hg endurance test, providing detailed instructions for each.

What is the primary purpose of using Hutchison's spirometer?

• To monitor heart rate

• To measure blood pressure

• To evaluate muscle strength

• To assess lung volumes and capacities

How is tidal volume defined?

• The volume of air that remains in the lungs after expiration

• The volume of air inspired or expired normally

• The volume of air expired after maximum inspiration

• The maximum volume of air that can be inspired

What is the normal range for expiratory reserve volume (ERV)?

• 2000 to 3200 ml

• 3200 to 4800 ml

• 750 to 1000 ml

• 350 to 500 ml

How do you calculate inspiratory reserve volume (IRV) using Hutchison's spirometer?

• Divide the reading by 2

• Multiply the reading by 2

• Add the reading to 6.5 liters

• Subtract the reading from 6.5 liters

What is the normal range for vital capacity (VC)?

• 3200 to 4800 ml

• 350 to 500 ml

• 750 to 1000 ml

• 2000 to 3200 ml

What does maximum breathing capacity measure?

• The air breathed out with maximum effort in one minute

• The air inspired with maximum effort in one minute

• The air expired normally in one minute

• The air inspired normally in one minute

How is respiratory minute volume calculated?

• Tidal volume multiplied by respiratory rate

• Tidal volume divided by respiratory rate

• Inspiratory reserve volume multiplied by respiratory rate

• Expiratory reserve volume divided by respiratory rate

What is the breaking point in the breath holding test?

• The point where the lungs are fully inflated

• The point where carbon dioxide levels stimulate normal respiration

• The point where oxygen levels peak

• The point where the heart rate stabilizes

What is the normal value for expiratory pressure?

• 50 mm Hg

• 150 mm Hg

• 100 mm Hg

• 200 mm Hg

During the 40 mm Hg endurance test, what is the normal duration a subject should maintain the mercury level?

• 60 seconds

• 30 seconds

• 50 seconds

• 40 seconds