Nursing Elites

1. A client with a diagnosis of myocardial infarction (MI) is being treated. Which laboratory value would be most concerning?

• A. Troponin level of 0.5 ng/mL
• B. Creatine kinase-MB (CK-MB) of 5.0 ng/mL
• C. Serum potassium of 4.5 mEq/L
• D. Blood glucose of 180 mg/dL

Correct answer: A

Rationale: A troponin level of 0.5 ng/mL is elevated, indicating myocardial damage, making it the most concerning finding in a client with a myocardial infarction (MI). Troponin is a highly specific marker for cardiac muscle damage, and elevated levels suggest ongoing injury to the heart muscle. While Creatine kinase-MB (CK-MB) is also a cardiac enzyme, troponin is more specific and sensitive for myocardial damage. Serum potassium and blood glucose levels are important parameters to monitor in MI patients, but in this scenario, the elevated troponin level takes precedence as it directly reflects cardiac injury.

2. A client with congestive heart failure (CHF) is receiving furosemide (Lasix). Which laboratory value should the LPN monitor closely while the client is taking this medication?

• A. Sodium
• B. Potassium
• C. Calcium
• D. Magnesium

Correct answer: B

Rationale: The LPN should monitor potassium levels closely while the client is taking furosemide (Lasix) due to the medication's potential to cause hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss through increased urine output. Hypokalemia can result in serious complications such as cardiac dysrhythmias. Monitoring sodium levels (choice A) is important but not as critical as monitoring potassium in this context. Calcium (choice C) and magnesium (choice D) levels are not typically affected by furosemide and are not the priority for monitoring in this scenario.

3. When admitting a 5-month-old who has vomited 9 times in the past 6 hours, what should the healthcare provider observe for signs of which overall imbalance?

• A. Metabolic acidosis
• B. Metabolic alkalosis
• C. Increased serum hemoglobin levels
• D. Decreased serum potassium levels

Correct answer: B

Rationale: When a 5-month-old infant vomits multiple times, there is a risk of developing metabolic alkalosis due to the loss of stomach acid. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. It is caused by the loss of hydrogen ions from the body, often through vomiting. Metabolic acidosis (choice A) is unlikely in this scenario because it is more commonly associated with conditions like renal failure or diabetic ketoacidosis. Choice C, increased serum hemoglobin levels, is not typically a direct consequence of vomiting. Choice D, decreased serum potassium levels, may occur with vomiting but is not the primary concern when a patient is vomiting excessively.

4. The nurse is caring for a client who is post-operative following a cholecystectomy. Which assessment finding would require immediate intervention?

• A. Absent bowel sounds
• B. Pain level of 8/10
• C. Temperature of 100.4°F
• D. Saturated abdominal dressing

Correct answer: D

Rationale: A saturated abdominal dressing may indicate active bleeding or other complications that require immediate intervention, such as ensuring hemostasis and preventing further complications. Absent bowel sounds are common in the immediate post-operative period and may not require immediate intervention unless accompanied by other symptoms. A pain level of 8/10 can be managed with appropriate pain medication and is not typically considered an immediate priority unless other indications suggest complications. A temperature of 100.4°F is slightly elevated but may not be a cause for immediate concern unless it is associated with other signs of infection or distress that would warrant urgent attention.

5. A client is to receive cimetidine (Tagamet) 300 mg q6h IVP. The preparation arrives from the pharmacy diluted in 50 ml of 0.9% NaCl. The LPN plans to administer the IVPB dose over 20 minutes. For how many ml/hr should the infusion pump be set to deliver the secondary infusion?

• A. 150
• B. 50
• C. 100
• D. 75

Correct answer: A

Rationale: Setting the infusion pump to 150 ml/hr ensures the correct administration rate of the IVPB dose over 20 minutes. To calculate the infusion rate, consider that the total volume to be infused is 50 ml over 20 minutes. To convert this to ml/hr, the calculation is (50 ml / 20 minutes) x 60 minutes/hr = 150 ml/hr. Choices B, C, and D are incorrect as they do not reflect the correct calculation for the infusion rate needed to deliver the secondary infusion over the specified time.

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