the purpose of performing quality control is to

NCLEX-RN

NCLEX RN Practice Questions With Rationale

1. What is the purpose of performing quality control?

A. Create a paper trail to show that the laboratory is compliant with OSHA standards for quality control.
B. Improve the odds that the results reported for any given test are as accurate and reliable as possible.
C. Be required by law to be part of a quality assurance program.
D. All of the above

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. All of the following are essential components of supervision EXCEPT:

A. All tasks to be delegated or supervised are within the nurse's scope of practice
B. The necessary tasks require repeated assessments
C. The nurse has adequate time to develop staff assignments
D. Policies have been developed that govern nursing practice

Correct answer: B

Rationale: Supervision in nursing requires key components to ensure effective management. Tasks to be delegated or supervised must align with the nurse's scope of practice to maintain safety and quality care. Adequate time for staff assignment development is essential for efficient workflow. Policies governing nursing practice provide a framework for safe and standardized care. However, the statement 'The necessary tasks require repeated assessments' is not an essential component of supervision. Tasks should be clear, achievable, and not necessitate repeated assessments, as this would impede delegation and efficient completion. Repeated assessments may indicate unclear task delegation or inadequate initial assessment, which should be avoided in effective supervision.

3. While planning care for a toddler, the nurse teaches the parents about the expected developmental changes for this age. Which statement by the mother shows that she understands the child's developmental needs?

A. "I want to protect my child from any falls."?
B. "I will set limits on exploring the house."?
C. "I understand the need to use those new skills."?
D. "I intend to keep control over our child."?

Correct answer: C

Rationale: The correct answer is: "I understand the need to use those new skills."? This response indicates that the mother recognizes the importance of allowing the toddler to practice and develop new skills, supporting autonomy and exploration. Setting limits, protecting from falls, and intending to keep control go against the toddler's developmental needs. Toddlers at this stage require opportunities to explore, practice new skills, and gain independence to foster healthy development.

4. A client with asthma is being admitted for breathing difficulties. His arterial blood gas results are pH 7.26, PCO2 49, PaO2 90, and HCO3- 21. Which of the following best describes this condition?

A. Uncompensated respiratory acidosis
B. Compensated respiratory alkalosis
C. Uncompensated metabolic acidosis
D. Compensated metabolic alkalosis

Correct answer: A

Rationale: In this case, the client's arterial blood gas results show a pH of 7.26 and a PCO2 of 49, both of which are abnormal. A pH below the normal range of 7.35-7.45 indicates acidosis. The elevated PCO2 of 49 mmHg suggests respiratory acidosis as the primary issue. The normal range for PCO2 is 35-45 mmHg, so a value of 49 indicates the retention of excess CO2, leading to acidosis. The low HCO3- level of 21 also supports the presence of metabolic acidosis; however, the primary abnormality is respiratory, making this an uncompensated respiratory acidosis. Therefore, the correct answer is 'Uncompensated respiratory acidosis.' Choice B, 'Compensated respiratory alkalosis,' is incorrect because the client's pH is acidic, not alkalotic. Additionally, there is no compensation occurring for the primary respiratory acidosis indicated by the elevated PCO2. Choice C, 'Uncompensated metabolic acidosis,' is incorrect because while the HCO3- level is low, the primary issue indicated by the elevated PCO2 is respiratory acidosis. Choice D, 'Compensated metabolic alkalosis,' is incorrect since the arterial blood gas results do not support a metabolic alkalosis. The low HCO3- level would typically be seen in metabolic acidosis, but in this case, the primary issue is respiratory acidosis.

5. A nurse is caring for a 3-day old infant who needs an exchange transfusion. Which of the following statements is appropriate for teaching the child's parents about this procedure?

A. The registered nurse will be performing the procedure
B. The procedure takes approximately 1 ? hours.
C. The nurse will draw out 250cc of blood and then immediately replace it with 250cc
D. The infant will continue to receive phototherapy during the procedure.

Correct answer: B

Rationale: : An exchange transfusion is a method of controlling high bilirubin levels in infants when traditional phototherapy is unsuccessful. During an exchange transfusion, the physician removes 5-10 cc of blood and then replaces it with donor blood. The parents of this infant should know that the procedure is always performed by a physician and will take approximately 1 � hours to complete.