Nursing Elites

1. What ECG changes are seen in hypokalemia?

• A. Flattened T waves on the ECG
• B. Elevated ST segments on the ECG
• C. Widened QRS complex
• D. Prominent U waves on the ECG

Correct answer: A

Rationale: The correct answer is A: Flattened T waves on the ECG. Flattened T waves are an early indicator of hypokalemia on an ECG. Choice B, Elevated ST segments, is not typically seen in hypokalemia but can be a sign of myocardial infarction. Choice C, Widened QRS complex, is more commonly associated with hyperkalemia. Choice D, Prominent U waves, is typically associated with hypokalemia, but flattened T waves are considered a more specific and early sign.

2. What is the preferred electrical intervention for a patient with ventricular tachycardia with a pulse?

• A. Synchronized cardioversion
• B. Defibrillation
• C. Pacing
• D. Medication administration

Correct answer: A

Rationale: The correct answer is A: Synchronized cardioversion. In ventricular tachycardia with a pulse, synchronized cardioversion is the preferred electrical intervention. Synchronized cardioversion is used to treat tachyarrhythmias where there is a pulse present. Defibrillation (choice B) is used in emergencies for pulseless ventricular tachycardia or ventricular fibrillation. Pacing (choice C) is more suitable for bradycardias or certain conduction abnormalities. Medication administration (choice D) may be used in stable cases or as an adjunct to other treatments, but synchronized cardioversion is the primary intervention for ventricular tachycardia with a pulse.

3. What are the expected findings in a patient experiencing hypokalemia?

• A. Flattened T waves on an ECG
• B. Elevated ST segments
• C. Prominent U waves
• D. Bradycardia

Correct answer: A

Rationale: The correct answer is A: Flattened T waves on an ECG. Hypokalemia is characterized by flattened T waves on an ECG, which is an early indicator of low potassium levels. Elevated ST segments (Choice B) are associated with conditions like myocardial infarction, not hypokalemia. Prominent U waves (Choice C) are typically seen in hypokalemia, but flattened T waves are more specific. Bradycardia (Choice D) can be a manifestation of severe hypokalemia but is not as specific as flattened T waves on an ECG.

4. What is the priority action when a healthcare professional misreads a glucose reading and administers excess insulin?

• A. Administer IV glucose
• B. Monitor for hyperglycemia
• C. Monitor for hypoglycemia
• D. Document the incident

Correct answer: C

Rationale: The priority action when a healthcare professional misreads a glucose reading and administers excess insulin is to monitor for hypoglycemia. Excess insulin can lead to dangerously low blood sugar levels (hypoglycemia), which can result in serious complications. Monitoring for hypoglycemia allows for timely identification and intervention to prevent harm. Administering IV glucose may be necessary if hypoglycemia occurs. Monitoring for hyperglycemia is not the priority in this situation, as excess insulin would lower blood sugar levels. Documenting the incident is important for reporting and quality improvement purposes but should not take precedence over ensuring patient safety by monitoring for hypoglycemia.

5. A nurse is assessing a client who has a sodium level of 122 mEq/L. Which of the following findings should the nurse expect?

• A. Decreased deep tendon reflexes
• B. Positive Chvostek's sign
• C. Hyperactive bowel sounds
• D. Dry mucous membranes

Correct answer: A

Rationale: Corrected deep tendon reflexes occur with hyponatremia. Other manifestations of hyponatremia include headache, confusion, lethargy, fatigue, seizures, and muscle weakness. Positive Chvostek's sign is associated with hypocalcemia, hyperactive bowel sounds are not typically related to hyponatremia, and dry mucous membranes are more commonly seen with dehydration.

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