Exercise 10: Acid/Base Balance Worksheet

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Exercise 10: Acid/Base Balance Worksheet
Assignment Due: Week 1

Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus.

Please make sure that your answers are typed in RED.

Please type your Name and Student ID Number here: Michael Rowland 4035527

Respiratory Acidosis and Alkalosis
Activity 1: Normal Breathing

1. At 20 seconds, pH = 7.40
2. At 40 seconds, pH = 7.39
3. At 60 seconds, pH = 7.38
4. Did the pH level of the blood change at all during normal breathing? If so, how? yes, it went down by .01 pH 5. Was the pH level always within the “normal” range for the human body? 7.35-7.45

6. Did the PCO2 level change during the course of normal breathing? If so, how? No

Activity 2a: Hyperventilation – Run 1

1. At 20 seconds, pH = 7.48
2. At 40 seconds, pH = 7.56
3. At 60 seconds, pH = 7.69
4. Maximum pH = 7.59
5. Did the pH level of the blood change at all during this run? If so, how? ,yes it went up .08 from 20 seconds to 40 seconds then 13 after 60 seconds 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? no, it indicated a rise in pH 7. Did the PCO2 level change during the curse of this run? If so, how? the max pco2 did not change but the minimum did. the min. went down by 8 then by 6 8. If you observed an acid/base imbalance during this run, how would you expect to renal system to compensate for this condition? by increasing pco2 level and decreasing pH levels 9. How did the hyperventilation trace differ from the trace for the normal breathing? Did the tidal volumes change? yes the tidal volumes were larger 10. What might cause a person to hyperventilate? stress and anxiety are the most common

Activity 2b: Hyperventilation – Run 2

1. What happened to the trace after the 20-second mark when you stopped the hyperventilation? Did the breathing return to normal immediately? Explain your observation. no it basically stopped for approximately 20 seconds

Activity 3: Rebreathing

1. At 20 seconds, pH = 7.32
2. At 40 seconds, pH = 7.3
3. At 60 seconds, pH = 7.24
4. Did the pH level of the blood change at all during this run? If so, how? yes it went down by .02 then .06 5. 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?no in indicated a decrease in pH level 6. Did the PCO2 level change during the course of this run? If so, how? yes it increase 7. If you observed an acid/base imbalance during this run, how would you expect the renal system to compensate for this condition? decreased pco2 level an increase pH levels 8. How did the rebreathing trace differ from the trace for normal breathing? Did the tidal volumes change? yes instead of remaining the same it increased slowly 9. Give examples of respiratory problems that would result in pH and PCO2 patterns similar to what you observed during rebreathing? depression

Renal System Compensation
Activity 4: Renal Response to Normal Acid/Base Balance

1. At normal PCO2 and pH levels, what level of H+ was present in the urine?normal 2. What level of [HCO3-] was present in the urine? normal 3. Why does the blood pH value change as PCO2 changes? because co2 dissolves in the blood forming carbonic acid - therefore lowering pH level 4. How does the blood pH value change as Pco2 changes? an increased pco2 decreases pH

Activity 5: Renal Response to Respiratory Alkalosis

1. What level of [H+] was present in the urine at each of these PCO2/pH levels? normal 2. What level of [HCO3-] was...
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