NCLEX-RN
NCLEX RN Exam Review Answers
1. You are caring for an infant who is just about 12 months old. Which assessment data is normal for the infant at this age?
- A. The infant had doubled their birth weight at twelve months.
- B. The infant had tripled their birth weight at twelve months.
- C. The mother reports that the infant is drinking 60 mLs per kilogram of its body weight.
- D. The infant had grown ¼ inch since last month.
Correct answer: A
Rationale: The normal assessment data for the infant at 12 months of age is that the infant has doubled their birth weight at 12 months of age. The mother's reports that the infant is drinking 60 mLs per kilogram of its body weight and the fact that the infant had grown ¼ inch since last month are not normal assessment data. Infants are fed breast milk or formula every two to four hours with a total daily intake of 80 to 100 mLs per kilogram of body weight. As the neonate grows, they gain five to seven ounces during the first six months and then they double their birth weight during the first year; the head circumference increases a half inch each month for six months and then two tenths of an inch until the infant is one year of age. Similarly, the height or length of the newborn increases an inch a month for the first 6 months and then 1/2 inch a month until the infant is 1 year of age.
2. The nurse practicing in a maternity setting recognizes that the postmature fetus is at risk due to:
- A. Excessive fetal weight
- B. Low blood sugar levels
- C. Depletion of subcutaneous fat
- D. Progressive placental insufficiency
Correct answer: D
Rationale: A postmature or postterm pregnancy occurs when a pregnancy exceeds the typical term of 38 to 42 weeks. In this situation, the fetus is at risk due to progressive placental insufficiency. This occurs because the placenta loses its ability to function effectively after 42 weeks. The accumulation of calcium deposits in the placenta reduces blood perfusion, oxygen supply, and nutrient delivery to the fetus, leading to potential growth problems. Choices A, B, and C are incorrect because excessive fetal weight, low blood sugar levels, and depletion of subcutaneous fat are not the primary risks associated with postmature fetuses. The main concern lies in the compromised placental function and its impact on fetal well-being.
3. A client on lithium has diarrhea and vomiting. What should the nurse do first?
- A. Recognize this as a drug interaction
- B. Give the client Cogentin
- C. Reassure the client that these are common side effects of lithium therapy
- D. Hold the next dose and obtain an order for a stat serum lithium level
Correct answer: D
Rationale: Diarrhea and vomiting are manifestations of lithium toxicity. The priority action for the nurse is to hold the next dose of lithium and obtain an order for a stat serum lithium level to confirm toxicity. This ensures patient safety and prevents further harm. Recognizing it as a drug interaction is not the first step in this scenario. Cogentin is used to manage extrapyramidal symptoms (EPS) associated with antipsychotics, not lithium toxicity. Reassuring the client about these symptoms as common side effects of lithium therapy is inappropriate as they indicate a more serious issue than typical side effects like hand tremors, nausea, polyuria, and polydipsia.
4. The nurse is caring for a woman 2 hours after a vaginal delivery. Documentation indicates that the membranes were ruptured for 36 hours prior to delivery. What are the priority nursing diagnoses at this time?
- A. Altered tissue perfusion
- B. Risk for fluid volume deficit
- C. High risk for hemorrhage
- D. Risk for infection
Correct answer: D
Rationale: The correct answer is 'Risk for infection.' When membranes are ruptured for over 24 hours before delivery, there is a significantly increased risk of infection for both the mother and the newborn. Factors such as increased local cytokines, an imbalance in enzyme activity, and increased intrauterine pressure contribute to this risk. 'Altered tissue perfusion' is not the priority in this scenario as there is no indication of compromised blood flow. 'Risk for fluid volume deficit' is not the priority as there are no signs of excessive fluid loss. 'High risk for hemorrhage' is not the priority as the question does not suggest active bleeding as an immediate concern.
5. Which of the following interventions is necessary before insertion of an arterial line into the radial artery?
- A. Ensure that the client does not need surgery
- B. Assess the client's grip strength
- C. Perform an Allen test
- D. Check a serum potassium level
Correct answer: C
Rationale: Before inserting an arterial line into the radial artery, it is crucial to perform an Allen test. The Allen test assesses the collateral circulation to the hand by compressing both the radial and ulnar arteries. By occluding the radial artery and releasing the ulnar artery, the nurse can check if the ulnar artery can adequately supply blood to the hand if the radial artery is cannulated. This step ensures that there is adequate circulation to the hand post-insertion of the arterial line. Choice A, ensuring that the client does not need surgery, is not directly related to the insertion of an arterial line and is not a necessary step before the procedure. Choice B, assessing grip strength, is not specific to the vascular status of the hand and does not provide information about the adequacy of collateral circulation. Choice D, checking a serum potassium level, is unrelated to the assessment of radial artery patency and collateral circulation, which are the primary concerns before arterial line insertion.
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