NCLEX-RN
NCLEX RN Practice Questions Questions
Question 1 of 5
Cataracts result in opacity of the crystalline lens. Which of the following best explains the functions of the lens?
Correct Answer: C
Rationale: The lens focuses light rays onto the retina to produce a clear image.
Question 2 of 5
A nurse is preparing to administer a MMR vaccine to a 35-year-old male. The nurse should
Correct Answer: D
Rationale: MMR is an intramuscular vaccine, requiring a 90-degree angle injection (typically deltoid). Dorsogluteal is not preferred, and pinching is for subcutaneous injections.
Question 3 of 5
The client is admitted with chronic obstructive pulmonary disease. Blood gases reveal pH 7.36, CO2 45, O2 84, bicarb 28. The nurse would assess the client to be in:
Correct Answer: C
Rationale: Normal pH with elevated CO2 and bicarbonate indicates compensated respiratory acidosis, typical in COPD.
Question 4 of 5
A nurse starts an IV medication for a client. It is ordered as IV push, and she pushes the medication slowly over two minutes. The client then becomes restless, complains of chest pain, has difficulty breathing, and becomes cyanotic. The nurse recognizes this is most likely caused by
Correct Answer: D
Rationale: Rapid onset of chest pain, dyspnea, cyanosis, and restlessness after IV push suggests pulmonary embolism, likely from air or thrombus introduced during administration.
Question 5 of 5
Which of the following is NOT considered a risk factor for developing breast cancer?
Correct Answer: C
Rationale: Early menarche, nulliparity, and uterine cancer history increase breast cancer risk due to prolonged estrogen exposure or shared risk factors. Early menopause reduces risk by decreasing estrogen exposure.