Which among the following is an inappropriate management for Mr. Y with serum potassium 6.2 mEq/L?

GMCH Nursing Officer-2025

Medical Surgical Nursing

Medium

Appeared in: GMCH Nursing Officer-2025

Explanation

Spironolactone is a potassium-sparing diuretic, which means it blocks the action of aldosterone in the kidneys.
This action leads to the retention of potassium and the excretion of sodium and water.
Administering a potassium-sparing diuretic to a patient with pre-existing hyperkalemia (K+ > 5.0 mEq/L) is contraindicated because it will worsen the condition.
Elevating potassium further can lead to severe cardiac toxicity, including bradycardia, ventricular fibrillation, and asystole.

Option B: This is an appropriate and critical first-line intervention in severe hyperkalemia, especially with ECG changes.
Option C: This is an appropriate and rapid-acting intervention to lower serum potassium.
Option D: This is an appropriate intervention, particularly in specific clinical contexts.

Visual 1: ECG Strip - Showing the progression of ECG changes in hyperkalemia, from peaked T waves to widened QRS and sine wave pattern. This helps visualize the cardiac risk.
Visual 2: Flowchart - Illustrating the emergency management algorithm for hyperkalemia, showing the roles of calcium gluconate, insulin/dextrose, and other interventions based on ECG findings and potassium level.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Management of Hyperkalemia as background academic context rather than a clinical decision trigger.
A nurse's primary responsibility is to recognize critical lab values like a potassium of 6.2 mEq/L and immediately notify the physician.
Nurses must know which medications are contraindicated. Before administering any medication, especially diuretics, the nurse must check the patient's latest electrolyte levels.
Patient safety is paramount. Administering spironolactone in this scenario would be a serious medication error with potentially fatal consequences.

How to Approach the Question

First, identify the key information in the stem: the patient has a serum potassium of 6.2 mEq/L.
Recognize that this value is significantly elevated and indicates hyperkalemia (Normal: 3.5-5.0 mEq/L).
Note the lead-in keyword 'inappropriate'. This means you are looking for the action that should NOT be taken.
Evaluate each option based on its known effect on serum potassium levels.
Option A (Spironolactone) is a potassium-sparing diuretic; it increases potassium. This is contraindicated.
Options B, C, and D (Calcium gluconate, Insulin/Dextrose, Bicarbonate) are all standard treatments used to manage hyperkalemia. They are appropriate actions.

Concept Tested & Keywords

Concept Tested: Management of Hyperkalemia
Stem keywords: serum potassium 6.2 mEq/L, inappropriate management, hyperkalemia
Lead-in keywords: inappropriate
Clinical cues: Serum potassium of 6.2 mEq/L signifies moderate to severe hyperkalemia, requiring urgent intervention.
Negative lead-in flag: The question asks for an inappropriate action, which is a negative framing.

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