the purpose of performing quality control is to
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Nursing Elites

NCLEX-RN

NCLEX RN Practice Questions With Rationale

1. What is the purpose of performing quality control?

Correct answer: B

Rationale: The primary purpose of performing quality control is to enhance the accuracy and reliability of test results. Quality controls are crucial for ensuring the reliability of each analyte tested. While quality control is not mandated by specific laws, accrediting bodies often require it to maintain accreditation. Creating a paper trail and legal requirements are not the primary objectives of quality control, making choices A and C incorrect. Therefore, the correct answer is to improve the accuracy and reliability of reported test results.

2. A nurse walks into a client's room to find the nursing assistant yelling, 'Sit back down or I won't help you eat, and then you will starve!' This type of behavior is known as:

Correct answer: A

Rationale: The correct answer is A: Psychological abuse. This behavior is classified as psychological abuse, which harms another person through words or threats. The nursing assistant's actions of yelling, making threats, and using food as a form of control fall under psychological abuse. Abandonment (choice B) refers to deserting or leaving a client without care, which is not the case in the scenario. Material exploitation (choice C) involves taking advantage of a person's assets or resources for personal gain, which is not evident here. Physical abuse (choice D) involves causing physical harm, which is not the primary issue in this situation. Therefore, the most appropriate classification for the behavior described in the scenario is psychological abuse.

3. A client with hyperkalemia may exhibit peaked T waves on an electrocardiogram. This manifestation is an early sign of high potassium levels, but the diagnosis should not be based on this aspect alone. Untreated, hyperkalemia can lead to progressively worsening cardiac instability.

Correct answer: B

Rationale: A lumbar puncture is performed to obtain cerebrospinal fluid for analysis to investigate various conditions affecting the client. During the procedure, the client is typically positioned on their side or sitting leaning over a table with their back rounded. The physician inserts a needle into the back around the L4-L5 vertebrae to collect the sample. Option A is incorrect because a lumbar puncture does not draw blood but instead collects cerebrospinal fluid. Option C is incorrect as the client should not necessarily lie flat for 24 hours post-procedure. Option D is incorrect as the common risks of a lumbar puncture include headache, back pain, and potential infection, not nausea, rash, or hypotension.

4. Which of the following situations might warrant a laboratory magnesium level?

Correct answer: C

Rationale: Ulcerative colitis can lead to symptoms such as abdominal pain, fever, diarrhea, and weight loss. This condition may impact the absorption of certain nutrients, including magnesium. Therefore, patients with chronic gastrointestinal conditions like ulcerative colitis should be screened for electrolyte imbalances related to impaired digestion. Hyperthyroidism, arthritis, and depression do not typically directly affect magnesium levels in the same way as gastrointestinal conditions like ulcerative colitis.

5. The healthcare professional needs to validate which of the following statements pertaining to an assigned client?

Correct answer: C

Rationale: Validation is the process of confirming that data are actual and factual. Data that can be measured can be accepted as factual, as in options 1, 3, and 4. The weight, blood pressure, and physical appearance of a lesion can be objectively verified. However, option C, the client reporting an infected toe, requires the nurse to directly assess the client's toe to confirm the statement. This choice involves subjective data that needs to be validated through direct observation, making it the correct answer. Options A, B, and D provide data that can be measured objectively and verified without the need for further assessment.

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