Nursing Elites

1. A client is admitted with a possible myocardial infarction. Which laboratory test result is most indicative of a myocardial infarction?

• A. Serum creatine kinase (CK)
• B. Serum troponin
• C. Serum myoglobin
• D. C-reactive protein (CRP)

Correct answer: B

Rationale: Serum troponin is the most specific and sensitive indicator of myocardial infarction. Troponin levels rise within 3-4 hours after myocardial damage, peak at 10-24 hours, and remain elevated for up to 10-14 days. Creatine kinase (CK) and myoglobin can also be elevated in myocardial infarction, but troponin is more specific to cardiac muscle damage. C-reactive protein (CRP) is a marker of inflammation and is not specific for myocardial infarction.

2. A 65-year-old male client with a history of smoking and high cholesterol is admitted with shortness of breath and chest pain. Which diagnostic test should the nurse anticipate preparing the client for first?

• A. Electrocardiogram (ECG)
• B. Chest X-ray
• C. Arterial blood gases (ABGs)
• D. Pulmonary function tests (PFTs)

Correct answer: A

Rationale: The correct answer is an Electrocardiogram (ECG). An ECG should be performed first to assess for cardiac ischemia, especially given the client's symptoms and history. Chest X-ray (Choice B) may be ordered to evaluate the lungs but would not be the initial test for this client presenting with chest pain and shortness of breath. Arterial blood gases (ABGs) (Choice C) are used to assess oxygenation and acid-base balance but are not the primary diagnostic test for a client with suspected cardiac issues. Pulmonary function tests (PFTs) (Choice D) are used to assess lung function and would not be the first test indicated in this scenario.

3. The nurse is assessing a client with a small bowel obstruction who was hospitalized 24 hours ago. Which assessment finding should the nurse report immediately to the healthcare provider?

• A. Hypoactive bowel sounds in the lower quadrant.
• B. Rebound tenderness in the upper quadrants.
• C. Tympany with percussion of the abdomen.
• D. Light-colored gastric aspirate via the nasogastric tube.

Correct answer: B

Rationale: Rebound tenderness in the upper quadrants may indicate peritonitis, which requires prompt medical attention. Hypoactive bowel sounds are expected in small bowel obstruction and would not be a priority over signs of peritonitis. Tympany with percussion is a normal finding and not a cause for immediate concern. Light-colored gastric aspirate could indicate various issues but is not as urgent as peritonitis.

4. The nurse is caring for a client with a chest tube following a pneumothorax. Which assessment finding requires immediate intervention?

• A. Oxygen saturation of 94%
• B. Subcutaneous emphysema
• C. Crepitus around the insertion site
• D. Drainage of 50 ml per hour

Correct answer: B

Rationale: Subcutaneous emphysema is the correct answer as it is most concerning in a client with a chest tube following a pneumothorax. It may indicate a pneumothorax recurrence or air leak, requiring immediate intervention to prevent complications. Oxygen saturation of 94% is acceptable and does not require immediate intervention. Crepitus around the insertion site may be a normal finding after chest tube placement and does not necessarily indicate a complication. Drainage of 50 ml per hour is within the expected range for a chest tube and does not require immediate intervention.

5. In a client with cirrhosis admitted with jaundice and ascites, which laboratory value is most concerning?

• A. Serum bilirubin of 3.0 mg/dl
• B. Serum albumin of 3.0 g/dl
• C. Serum ammonia level of 80 mcg/dl
• D. Serum sodium level of 135 mEq/L

Correct answer: C

Rationale: A serum ammonia level of 80 mcg/dl is most concerning in a client with cirrhosis as it may indicate hepatic encephalopathy, requiring immediate intervention. Elevated ammonia levels are associated with impaired liver function and can lead to mental status changes. Serum bilirubin (Choice A) is elevated in cirrhosis but not as concerning for acute intervention as high ammonia levels. Serum albumin (Choice B) and serum sodium (Choice D) levels are important in cirrhotic patients but are not as directly associated with hepatic encephalopathy as ammonia levels.

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