Activity 2- Answer questions below. a) What happens to the FEV 1% as the airway

Question

Activity 2- Answer questions below. a) What happens to the FEV 1% as the airway radius decreases? b) WHY did this happen? hat do you think would happen if to the FEV1% in a patient with COPD? a) What happens to the FEVi in the patient with emphysema? b) What happens to the FEV, in the patient with acute asthma attack? c) What happens to the FEVi after the patient with asthma used their inhaler medication? d) How did heavy exercise change TV compared to moderate exercise? e) Why did this occur? a) Why do premature infants often have breathing difficulties?

Explanation / Answer

Ans a) As the airway radius decreases the FEV1%, it leads to the proportionate decrease in the FEV. There is a reduction of the same.

Ans b) The FEV decreases proportionately because as the airway decreases, it leads to the increase in the resistance.

Ans a) In case of the patient suffering from emphysema the REV increases as the airway increases in its size. Also the process of the expiration is impaired.

Ans b) In case of a patient suffering from acute asthmatic attack, the REV increases as during the asthmatic attack, inspiration and expiration are impaired.

Ans c) During a condition when the patient is suffering from asthma and they use the inhaler medication, it leads to the dilation of the patient’s bronchioles leading to decrease in the overall REV as it reduce the airway resistance.

Ans d) During the heavy exercise and moderate exercise, it is found that the variable that changes rapidly is the tidal volume.

Ans e) The tidal volume changes during the exercise due to the change in the radius and the constant FEV change.

Ans a) the pre-mature infants find it difficult to breathe as they are do not produce surfactants or produce a very little of it. The surfactant helps in increasing the airflow due to reduced resistance. As the surface tension reduces in the alveoli, it helps the alveoli to increase the surface area for exchange of gas.

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