Nursing Elites

1. What ECG changes are seen with hyperkalemia?

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

Correct answer: A

Rationale: Flattened T waves are an early ECG sign of hyperkalemia. Hyperkalemia affects the repolarization phase of the cardiac action potential, leading to changes such as peaked T waves, prolonged PR interval, widened QRS complex, and ultimately sine wave pattern. Elevated ST segments, prominent U waves, and widened QRS complex are not typically associated with hyperkalemia, making choices B, C, and D incorrect.

2. What should be the priority action when a patient is admitted with chest pain from acute coronary syndrome?

• A. Administer sublingual nitroglycerin
• B. Obtain IV access
• C. Check cardiac enzymes
• D. Administer aspirin

Correct answer: A

Rationale: The correct answer is to administer sublingual nitroglycerin. This is the priority action in treating chest pain associated with acute coronary syndrome as it helps to dilate blood vessels, improve blood flow to the heart, and reduce cardiac tissue damage. Administering nitroglycerin is crucial in managing the symptoms and potential complications of acute coronary syndrome. Obtaining IV access (Choice B) is important for administering medications and fluids but does not address the immediate symptom of chest pain. Checking cardiac enzymes (Choice C) and administering aspirin (Choice D) are essential steps in the management of acute coronary syndrome, but they should follow the administration of nitroglycerin to address the immediate symptom and improve blood flow to the heart.

3. What dietary recommendations should be provided for a patient with pre-dialysis end-stage kidney disease?

• A. Reduce phosphorus intake to 700 mg/day
• B. Increase sodium intake
• C. Restrict protein intake to 0.55-0.60 g/kg/day
• D. Limit potassium-rich foods

Correct answer: A

Rationale: The correct recommendation for a patient with pre-dialysis end-stage kidney disease is to reduce phosphorus intake to 700 mg/day. Excessive phosphorus can be harmful to individuals with kidney disease as the kidneys may not be able to effectively remove it from the body. Choices B, C, and D are incorrect. Increasing sodium intake is generally not recommended for patients with kidney disease as it can lead to fluid retention and high blood pressure. Restricting protein intake is important in later stages of kidney disease, but for pre-dialysis end-stage kidney disease, protein intake should be individualized based on the patient's condition. Limiting potassium-rich foods is more relevant for patients with advanced kidney disease or those on dialysis, as impaired kidney function can lead to high potassium levels in the blood.

4. A patient is receiving discharge instructions for GERD. Which of the following statements by the patient demonstrates an understanding of the teaching?

• A. I should take my medication with orange juice.
• B. Having a bedtime snack will prevent heartburn.
• C. I will lie down after meals.
• D. I will limit activities that require bending at the waist.

Correct answer: D

Rationale: The correct answer is D. Patients with GERD should avoid activities that increase intra-abdominal pressure, such as bending at the waist, as this can lead to reflux. Choice A is incorrect because medications for GERD are usually taken with water, not citrus juices. Choice B is incorrect as having a bedtime snack can worsen GERD symptoms. Choice C is incorrect because lying down after meals can also exacerbate reflux due to the effects of gravity.

5. What ECG changes are expected in a patient with hypokalemia?

• A. Flattened T waves
• B. Prominent U waves
• C. Widened QRS complexes
• D. Tall T waves

Correct answer: A

Rationale: Flattened T waves are an early indicator of hypokalemia on an ECG. Hypokalemia primarily presents with flattened T waves, not prominent U waves, widened QRS complexes, or tall T waves. Prominent U waves are associated with hypokalemia only in severe cases. Widened QRS complexes are more indicative of hyperkalemia, while tall T waves are seen in hyperkalemia as well.

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