Nokea
A nurse is reviewing the laboratory values of a client who had a myocardial infarction 3 hours ago. The nurse should expect which of the following laboratory values to be elevated?
- A. Troponin
- B. Aspartate aminotransferase (AST)
- C. Serum amylase
- D. Unconjugated bilirubin
Correct Answer: A
Rationale: Troponin rises within 3-12 hours post-MI and is the most specific marker for myocardial injury.
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A nurse is reviewing the laboratory test results from a client who has acute kidney injury (AKI). Which of the following electrolyte imbalances should the nurse expect?
- A. Hypophosphatemia
- B. Hypercalcemia
- C. Hyperkalemia
- D. Hypernatremia
Correct Answer: C
Rationale: Hyperkalemia is expected in AKI due to impaired renal potassium excretion.
A nurse is caring for a client who has heart failure and a prescription for digoxin 125 mcg orally daily. Digoxin is available in 0.25 mg/tablet form. How many tablets should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 0.5
Rationale: Calculation: 125 mcg = 0.125 mg; 0.125 mg ÷ 0.25 mg/tablet = 0.5 tablets
A nurse is teaching the partner of a client who had an acute myocardial infarction (MI) about the reason blood was drawn from the client. Which of the following statements should the nurse make regarding cardiac enzyme studies?
- A. These tests will enable the provider to determine the heart structure and mobility of the heart valves.
- B. Cardiac enzymes will identify the location of the MI.
- C. Cardiac enzymes assist in diagnosing the presence of pulmonary congestion.
- D. These tests help determine the degree of damage to the heart tissues.
Correct Answer: D
Rationale: Cardiac enzymes (like troponin) indicate myocardial cell death and help quantify infarct size.
A nurse is caring for a client who has cirrhosis of the liver. Which of the following medications should the nurse anticipate may be ordered for this client? (Select all that apply.)
- A. Beta-blocking agent
- B. Diuretic
- C. Opioid analgesic
- D. Lactulose
- E. Sedative
Correct Answer: A,B,D
Rationale: Beta-blockers reduce portal pressure, diuretics manage ascites, and lactulose treats hepatic encephalopathy.
A nurse is reviewing the laboratory data of a client following a hemodialysis treatment. The nurse should expect to find a decrease in which of the following laboratory values?
- A. RBC count
- B. Protein
- C. Potassium
- D. Calcium
Correct Answer: C
Rationale: Potassium levels decrease after hemodialysis as it is effectively removed during the treatment.