Nursing Elites

1. The nurse is caring for a client with decreased cardiac output secondary to heart failure with fluid volume overload. The effects of diminished renal perfusion will have which physiologic response?

• A. Diuresis
• B. Increased fluid retention
• C. Elevated bicarbonate level
• D. Paroxysmal idiopathic narcosis

Correct answer: B

Rationale: When there is diminished renal perfusion due to decreased cardiac output, the kidneys receive less blood flow. This leads to a decrease in urine output and an increase in fluid retention, as the kidneys are not able to effectively filter and excrete excess fluid. Elevated bicarbonate level and paroxysmal idiopathic narcosis are not typically associated with diminished renal perfusion in heart failure. Therefore, the correct answer is 'Increased fluid retention.'

2. A client arrives in the emergency department after severely lacerating the left hand with a knife. HR 96, BP 150/88, R36. The client is extremely anxious and crying uncontrollably. Based on this assessment, the nurse anticipates that this client would be in which acid-base imbalance?

• A. Respiratory acidosis
• B. Respiratory alkalosis
• C. Metabolic acidosis
• D. Metabolic alkalosis

Correct answer: B

Rationale: The correct answer is respiratory alkalosis. Hyperventilation due to anxiety, pain, shock, severe infection, fever, or liver failure can lead to respiratory alkalosis. In this scenario, the client is extremely anxious and crying uncontrollably, indicating an increased respiratory rate and CO2 loss. Respiratory acidosis (choice A) is incorrect as it is characterized by an increase in CO2 levels, not a loss. Metabolic acidosis (choice C) involves a decrease in blood pH due to an accumulation of acids or loss of bicarbonate, which is not the case here. Metabolic alkalosis (choice D) results from excess bicarbonate or a loss of acids, not from increased CO2 loss due to hyperventilation.

3. In a client with asthma who develops respiratory acidosis, what should the nurse expect the client's serum potassium level to be?

• A. normal
• B. elevated
• C. low
• D. unrelated to the pH

Correct answer: B

Rationale: In respiratory acidosis, the serum potassium level is expected to be elevated. This occurs because potassium shifts from cells into the bloodstream as a compensatory mechanism to maintain acid-base balance. Choices A, C, and D are incorrect. A normal potassium level is not expected in respiratory acidosis. A low potassium level is more commonly associated with alkalosis, not acidosis. The potassium level is indeed related to pH changes in respiratory acidosis, leading to the expected elevation.

4. A client goes to the Emergency Department with acute respiratory distress and the following arterial blood gases (ABGs): pH 7.35, PCO2 40 mmHg, PO2 63mmHg, HCO3 23, and oxygenation saturation (SAO2) 93%. Which of the following represents the best analysis of the etiology of these ABGs?

• A. tuberculosis (TB)
• B. pneumonia
• C. pleural effusion
• D. hypoxia

Correct answer: D

Rationale: A combined low PO2 and low SAO2 indicates hypoxia. The pH, PCO2, and HCO3 are normal. ABGs are not necessarily altered in TB or pleural effusion. In pneumonia, the PO2 and PCO2 might be low because hypoxia stimulates hyperventilation, but the best analysis in this case is hypoxia due to the combination of low PO2 and low SAO2.

5. Which of the following should not be included in the teaching for clients who take oral iron preparations?

• A. Mix the liquid iron preparation with antacids to reduce GI distress.
• B. Take the iron with meals if GI distress occurs.
• C. Liquid forms should be taken with a straw to avoid discoloration of tooth enamel.
• D. Oral forms should be taken with juice, not milk.

Correct answer: A

Rationale: The correct answer is to mix the liquid iron preparation with antacids to reduce GI distress. This statement is incorrect because iron should not be mixed with antacids as it can significantly reduce the absorption of iron. Choice B is a good recommendation as taking iron with meals can help reduce gastrointestinal distress. Choice C is also correct as liquid forms of iron should be taken with a straw to prevent the discoloration of tooth enamel. Choice D is incorrect as iron preparations can be taken with juice or water, but not with milk, as calcium in milk can inhibit iron absorption.

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