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Airway Case Study

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1. Compute the MRV using the following formula: MRV = TV x BPM (breaths per minute). Show your work.
MRV=TV (500) * Breaths PM (15) MRV=7500 ml/min
2. Does Expiratory Reserve Volume (ERV) include Tidal Volume (TV)? Explain your answer.
No, Expiratory Reserve Volume is does not include in Tidal Volume. Expiratory Reserve Volume is the largest additional volume of air that can be forcibly expired.
3. Complete the chart
FEV1 AS 5 OF VC
RADIUS FEV1 VITAL
VAPACITY FEV1(%)
5.00 3541 4791 .739
4.50 2303 3143 .732
4.00 1422 1962 .724
3.50 822 1150 .714
3.00 436 621 .702

4. What happened to the FEV1(%) as the radius of the airway was decreased? Explain your answer.
The FEC1(%) decreased as the radius of the airway was decreased because of an obstructive airway. The results show that it is an obstructive airway because the airflow is constantly decreasing, if it was restrictive the volumes and capacities would have been affected more than what it was. …show more content…
What happens to PC02 during rapid breathing? Explain your answer.
During rapid breathing PC02 levels decrease because more carbon dioxide is removed from the blood than normal.
2. What happens to PCo2 during the entire time of the rebreathing activity? Explain your answer.
During the entire time of the rebreathing activity, PC02 increases during rebreathing. It increased because the air that was inhaled had increased amounts of exhaled CO2.
3. Did the depth of the breathing patter change during rebreathing? (carefully examine the tracing rate and depth changes; the changes can be subtle.) Explain your observations.
The depth and rate of respiration increased during rebreathing because increased CO2 in the blood causing stimulating of the respiratory centers in the brain stem. The depth and rate of respiration increased during rebreathing because incensed carbon dioxide in the blood causing stimulating of the respiratory centers in the

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