When trying to explain the role of potassium and hydrogen related ...

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When trying to explain the role of potassium and hydrogen related to acid-base balance, which of the following statements is accurate?
 
  A)
  Hypokalemia stimulates H+ secretion.
  B)
  Hyperkalemia will cause the reabsorption of HCO3.
  C)
  Acidosis causes an increase in K+ elimination.
  D)
  Alkalosis tends to increase H+ elimination.

Question 2

A patient has been diagnosed with a brain tumor that cannot be removed surgically. During each office visit, the nurse will be assessing the patient for syndrome of inappropriate antidiuretic hormone (SIADH).
 
  Which of the following assessments would alert the clinic nurse that the patient may be developing this complication?
  A)
  Complaints that his urine output is decreased, no edema noted in ankles, and increasing headache
  B)
  Elevated blood glucose levels, dry mucous membranes, and severe projectile vomiting
  C)
  Fever, diarrhea, and nausea
  D)
  Muscle cramps, pins and needle sensation around the mouth/lips, and unexplained bruising

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Answer to Question 1

Ans:
A

Feedback:

Hypokalemia is a potent stimulus for H+ secretion and HCO3 reabsorption. Acidosis tends to increase H+ elimination and decrease K+ elimination, with a resultant increase in plasma potassium levels, whereas alkalosis tends to decrease H+ elimination and increase K+ elimination, with a resultant decrease in plasma K+ levels.

Answer to Question 2

Ans:
A

Feedback:

SIADH manifests as a dilutional hyponatremia. Decrease urine output, absence of edema, and headaches are signs of this. Answer choice B relates to s/s of diabetes insipidus; answer choice C is indicative of common flu s/s; answer choice D is relates to s/s of hypocalcemia.

[2125004343]

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