Nokea
Hypervolemia is volume excess. Which of the following statements is(are) true regarding hypervolemia?
- A. Most fluid-volume excess is caused by drinking too much water and other fluids.
- B. Hypervolemia may be caused by infusion of too much sodium chloride intravenously.
- C. Generally, most hypervolemia is a result of retention of sodium and water in the extracellular fluid.
- D. Kidney, heart, or liver disease can cause hypervolemia.
- E. Overweight adults and newborns are the patients most susceptible to fluid volume excess.
Correct Answer: B,C,D
Rationale: Hypervolemia often results from excessive sodium chloride infusion, sodium and water retention, or organ dysfunction, not primarily from excessive drinking or specific susceptibility in overweight adults or newborns.
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Ionized calcium is needed for which of the following body functions?
- A. Delivery of glucose into the cells
- B. Transmission of electrical impulses along nerve pathways
- C. Normal oxygen saturation
- D. Normal bowel function
- E. Muscle contraction and relaxation
Correct Answer: B,E
Rationale: Ionized calcium is essential for nerve impulse transmission and muscle contraction/relaxation.
Your knowledge of which of the following pieces of data regarding potassium takes highest priority?
- A. Never give KCl IV push.
- B. Never administer potassium chloride by the direct intravenous route.
- C. $\mathrm{KCl}$ given IV push can cause fatal cardiac arrhythmias.
- D. Yes, this is a trick question. All of the above choices are essentially the same, but you probably will be able to remember to never give $\mathrm{KCl}$ direct IV push.
Correct Answer: D
Rationale: All statements emphasize the danger of administering potassium chloride IV push, which can cause fatal cardiac arrhythmias, making this knowledge critical.
If the patient's blood pH is 7.47, the patient is in
- A. Alkalosis.
- B. Acidosis.
- C. Hypovolemic shock.
- D. Tetany.
Correct Answer: A
Rationale: A blood pH of 7.47 is above the normal range (7.35-7.45), indicating alkalosis.
An older adult, or senior, with cardiac disease such as heart failure is at risk for fluid-volume overload. Which of the following interventions might be appropriate?
- A. Provide some coffee or tea as part of daily fluid intake.
- B. Restrict fluids.
- C. Increase salt intake.
- D. Monitor daily weights.
Correct Answer: B,D
Rationale: Fluid restriction and monitoring daily weights help manage fluid-volume overload in heart failure patients to prevent worsening of the condition.
Your patient is taking a thiazide diuretic routinely and tends to run a low serum K? level even though the physician has prescribed K? supplementation and the patient reports taking it faithfully. Which of the following foods would you recommend the patient add to his diet to assist in maintaining normal K? levels?
- A. Baked potatoes
- B. Whole-grain bread
- C. Bananas
- D. Oranges
- E. Apricots
- F. Halibut
- G. Green beans
Correct Answer: A,C,D,E,F
Rationale: Potassium-rich foods like baked potatoes, bananas, oranges, apricots, and halibut help maintain normal potassium levels.