Physioex Exercise 10 Acid/Base Balance
Respiratory Acidosis and Alkalosis
Activity 1: Normal Breathing
1. At 20 seconds, pH = 7.4
2. At 40 seconds, pH = 7.4
3. At 60 seconds, pH = 7.4
4. Did the pH level of the blood change at all during normal breathing? If so, how?
No, the pH level of the blood did not change during normal breathing.
5. Was the pH level always within the “normal” range for the human body?
Yes, the pH level was always within the normal range for human body.
6. Did the PCO2 level change during the course of normal breathing? If so, how?
No, the PCO2 level did not change during the course of normal breathing.
Activity 2a: Hyperventilation – Run 1
1. At 20 seconds, pH = 7.45
2. At 40 seconds, pH = 7.53
3. At 60 seconds, pH = 7.65
4. Maximum pH = 7.66
5. Did the pH level of the blood change at all during this run? If so, how?
Yes, the pH level fluctuate from 7.40 to 7.66 during this run.
6. Was the pH level always within the “normal” range for the human body? If not, when was the pH value outside of the normal range, and what acid/base imbalance did this pH value indicate?
The pH level was not within the normal range for human body. The pH level was outside of the normal range after 20 seconds, pH level above 7.45. The pH value indicate state of alkalosis.
7. Did the PCO2 level change during the curse of this run? If so, how?
PCO2 level fluctuate from 19.7 to 40.
8. If you observed an acid/base imbalance during this run, how would you expect to renal system to compensate for this condition?
The renal system will respond by excreting more HCO3- from the body in urine causing a decrease in plasma pH.
9. How did the hyperventilation trace differ from the trace for the normal breathing? Did the tidal volumes change?
The trace from normal breathing was ranging within 2 to 3 liters and the hyperventilation trace was ranging from 1 to 4 liters. Hyperventilation trace moved faster than the normal breathing trace. Yes, the tidal volumes changed.
10. What might cause a person to
Activity 1: Normal Breathing
1. At 20 seconds, pH = 7.4
2. At 40 seconds, pH = 7.4
3. At 60 seconds, pH = 7.4
4. Did the pH level of the blood change at all during normal breathing? If so, how?
No, the pH level of the blood did not change during normal breathing.
5. Was the pH level always within the “normal” range for the human body?
Yes, the pH level was always within the normal range for human body.
6. Did the PCO2 level change during the course of normal breathing? If so, how?
No, the PCO2 level did not change during the course of normal breathing.
Activity 2a: Hyperventilation – Run 1
1. At 20 seconds, pH = 7.45
2. At 40 seconds, pH = 7.53
3. At 60 seconds, pH = 7.65
4. Maximum pH = 7.66
5. Did the pH level of the blood change at all during this run? If so, how?
Yes, the pH level fluctuate from 7.40 to 7.66 during this run.
6. Was the pH level always within the “normal” range for the human body? If not, when was the pH value outside of the normal range, and what acid/base imbalance did this pH value indicate?
The pH level was not within the normal range for human body. The pH level was outside of the normal range after 20 seconds, pH level above 7.45. The pH value indicate state of alkalosis.
7. Did the PCO2 level change during the curse of this run? If so, how?
PCO2 level fluctuate from 19.7 to 40.
8. If you observed an acid/base imbalance during this run, how would you expect to renal system to compensate for this condition?
The renal system will respond by excreting more HCO3- from the body in urine causing a decrease in plasma pH.
9. How did the hyperventilation trace differ from the trace for the normal breathing? Did the tidal volumes change?
The trace from normal breathing was ranging within 2 to 3 liters and the hyperventilation trace was ranging from 1 to 4 liters. Hyperventilation trace moved faster than the normal breathing trace. Yes, the tidal volumes changed.
10. What might cause a person to