The nurse is educating a client with hypokalemia on why it is important to maintain potassium balance. Which does the nurse include in the teaching?
optic function
cardiac function
auditory function
skeletal function
The Correct Answer is B
A. Optic function: While potassium plays a role in cellular processes, including those in the eyes, its primary effects are felt in areas like the cardiovascular system. The optic nerve and visual processing are not influenced by potassium levels.
B. Cardiac function: Potassium is crucial for maintaining normal cardiac function. It helps regulate the electrical activity of the heart, and its imbalance can lead to arrhythmias, which can be life-threatening. Hypokalemia can cause disturbances in the heart’s rhythm, making it the most critical aspect to address.
C. Auditory function: Potassium levels do not affect auditory function. Potassium is involved in bodily functions, including maintaining the electrochemical gradients necessary for nerve and muscle activity, but it does not have a role in hearing or auditory processes.
D. Skeletal function: Potassium is important for muscle function, including skeletal muscles. Potassium’s role in muscle contraction extends to both skeletal and smooth muscles, but its impact on the heart’s electrical system makes cardiac function the priority.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. hypermagnesemia: The magnesium level is 1.0 mmol/L (approximately 2.0 mEq/L), which falls within the normal range (1.5–2.5 mEq/L), so this is not consistent with hypermagnesemia.
B. hyponatremia: The sodium level is 138 mEq/L, which is within the normal range of 135–145 mEq/L, and does not indicate a sodium imbalance.
C. hypokalemia: The potassium level is 3.2 mEq/L, which is below the normal range of 3.5–5.0 mEq/L, indicating hypokalemia. This can cause muscle weakness, cardiac arrhythmias, and other complications.
D. hypercalcemia: The calcium level is 100 mg/dL (or 2.5 mmol/L), which is within the normal range of 8.5–10.5 mg/dL (or 2.1–2.6 mmol/L), so hypercalcemia is not present.
Correct Answer is A
Explanation
A. Sign each entry: Proper documentation requires each entry to be signed or initialed by the nurse to verify accountability and provide a clear record of who performed the care. This is essential for legal and professional standards.
B. Leave blank spaces in charting: Leaving blank spaces can lead to unauthorized additions or confusion and is discouraged. Documentation should be continuous and clear without gaps to maintain accuracy and integrity.
C. Identify each entry with AM/PM instead of military time (2400 hour cycle): Military time is a standard and accepted practice in healthcare settings for clarity and to avoid confusion between AM and PM. Changing to AM/PM is unnecessary and may increase error risk.
D. Use different color of ink to highlight medication administration: Using different ink colors is not a standard requirement and could complicate documentation consistency. Clear, legible, and accurate entries are more important than color coding.
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