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A client with acute renal failure is prescribed a low-potassium diet. Which food should be avoided?
- A. Bananas.
- B. Rice.
- C. Apples.
- D. Bread.
Correct Answer: A
Rationale: Bananas are high in potassium, unsuitable for a low-potassium diet.
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The nurse evaluates that the client correctly understands how to report signs and symptoms of bleeding when the client makes which of the following statements?
- A. Petechiae are large, red skin bruises.'
- B. Ecchymoses are large, purple skin bruises.'
- C. Emmum is an open cut on the skin.'
- D. Abrasions are small pinpoint red dots on the skin.'
Correct Answer: B
Rationale: Ecchymoses are large, purple bruises caused by bleeding under the skin, a common sign of thrombocytopenia. This statement shows correct understanding. Petechiae are small, pinpoint red dots, not large bruises; 'emmum' is not a medical term; and abrasions are superficial skin injuries, not bleeding signs.
Blood pressure in the systemic circulation is highest in the:
- A. Arterioles
- B. Capillaries
- C. Aorta
- D. Venules
Correct Answer: C
Rationale: Blood pressure is highest in the aorta, where blood is ejected directly from the left ventricle during systole, generating peak pressure (systolic pressure). As blood flows through arterioles, capillaries, and venules, pressure progressively decreases due to resistance and vessel compliance. This makes the aorta the correct answer.
Which intervention is appropriate for a client on hemodialysis?
- A. Check fistula for a thrill.
- B. Restrict all fluids.
- C. Administer heparin post-dialysis.
- D. Encourage high-protein diet.
Correct Answer: A
Rationale: Checking for a thrill ensures fistula patency for dialysis.
A client's arterial blood gas values are as follows: pH, 7.31; PaO2, 80 mm Hg; PaCO2, 65 mm Hg; HCO3ˆ’, 36 mEq/L. The nurse should assess the client for?
- A. Cyanosis.
- B. Flushed skin.
- C. Irritability.
- D. Anxiety.
Correct Answer: C
Rationale: The ABG shows uncompensated respiratory acidosis (low pH, high PaCO2) with adequate oxygenation (PaO2 80). Irritability is a symptom of CO2 retention. Cyanosis requires lower PaO2. Flushed skin and anxiety are less specific.
Which of the following are expected outcomes for a client with pulmonary disease?
- A. A relatively matched ventilation-to-perfusion ratio.
- B. A low ventilation-to-perfusion ratio.
- C. A high ventilation-to-perfusion ratio.
- D. An equal PaO2 and PaCO2 ratio.
Correct Answer: A
Rationale: A matched ventilation-to-perfusion ratio is the goal in pulmonary disease for efficient gas exchange. Low or high ratios indicate mismatch. Equal PaO2 and PaCO2 is not a standard outcome.