NUR631 2023 January Week 3 Discussion (dq1+dq2) Latest

NUR631 Advanced Physiology and Pathophysiology

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Week 3 Discussion

DQ1 Select two of the following discussion questions for your discussion response. Indicate which questions you have chosen using the format displayed in the “Discussion Forum Sample.”

Explain how acid-base physiology leads to the regulation of fluid balance and extra cellular pH.

What is the equation for the carbonic acid/bicarbonate buffering system? How do actions at the lungs and kidneys affect this equation and thus compensate for alterations in plasma pH levels?

How do changes in plasma osmolality affect the physiology of erythrocytes?

DQ2 Use information provided and the “Discussion Forum Sample” to answer the following questions.

Scenario

A 75-year-old man was admitted with shortness of breath and lower extremity edema. He has been unwell for about a week and had multiple bouts of diarrhea over the previous 5 days. He does not take any medications. He was hyperventilating and was very distressed when EMS arrived. Admission arterial blood gas is listed below. He was on high concentration oxygen by mask on arrival to the emergency department.

Chemistry Results

Na+ = 127

HCO3- 20

HCO- = 30meq/L 3

K+ = 5.2

BUN 50.5

Glucose 9.5 mmols/l

Cl- 79

Creatinine 0.38

Anion gap 33 mmols/l

Arterial Blood Gases

pH 7.58

pCO2 21 mmHg

pO2 154 mmHg

HCO3 19 mmol/l

Questions

Answer the following questions:

What is this patient’s acid-base disorder?

Discuss why you how you came to that conclusion.

Is the patient compensating?

What are the pathophysiological responses that the body is attempting to use to compensate?

 

Explanation & Answer

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