NCLEX-RN
NCLEX RN Predictor Exam
1. Specific gravity in urinalysis:
- A. compares the concentration of urine to that of distilled water
- B. is useless when the patient is dehydrated
- C. can only be measured using a refractometer
- D. None of the above
Correct answer: A
Rationale: Specific gravity in urinalysis measures the concentration of solutes in urine compared to that of distilled water. This comparison helps in assessing the kidney's ability to concentrate urine properly. It is a valuable test even in dehydrated patients as it provides insights into renal function. Specific gravity can be measured using various methods, including a refractometer or reagent strips. Normal specific gravity readings of human urine typically range from 1.005 to 1.030. Choice A is correct as it accurately describes the purpose of specific gravity in urinalysis. Choices B and C are incorrect as specific gravity remains relevant in dehydrated patients and can be measured using different techniques, not solely a refractometer.
2. To collect timely, specific information, the nurse is most likely to ask which of the following questions?
- A. Would you describe what you are feeling?
- B. How are you today?
- C. What would you like to talk about?
- D. Where does it hurt?
Correct answer: A
Rationale: The correct answer is, 'Would you describe what you are feeling?' This open-ended question prompts the patient to provide subjective data, offering specific information about their current health status and human responses. This information can help identify actual or potential health issues. Choices B and C are more likely to yield general, nonspecific information. Choice D may lead to a brief response or nonverbal indication of pain location. A more effective approach to gather specific information about pain would be to ask, 'Can you describe any pain you are experiencing?'
3. What is the BEST blood collection location for a newborn?
- A. the AC
- B. the veins of the forehead
- C. the heel
- D. the fingertips
Correct answer: C
Rationale: When collecting blood from newborns, it is safest and most commonly done by collecting blood from the lateral or medial aspect of the baby's heel. This location is preferred due to the accessibility of the veins and the minimal discomfort caused to the newborn. Veins in the forehead are not commonly used for blood collection in newborns. The fingertips are not optimal for blood collection in newborns due to their small size and the potential for causing discomfort. The AC (antecubital) area, typically used in adults for blood collection, is not recommended for newborns due to the size of their veins and the potential risk of injury.
4. The rehabilitation nurse wishes to make the following entry into a client's plan of care: 'Client will reestablish a pattern of daily bowel movements without straining within two months.' The nurse would write this statement under which section of the plan of care?
- A. Nursing diagnosis/problem list
- B. Nursing orders
- C. Short-term goals
- D. Long-term goals
Correct answer: D
Rationale: The correct answer is 'Long-term goals.' Long-term goals are designed to describe changes in client behavior expected over a time frame greater than one week. In this case, the goal of reestablishing a pattern of daily bowel movements without straining within two months falls under a long-term goal. Long-term goals are aimed at restoring normal functioning in a problem area and are beneficial for healthcare workers caring for the client across different settings. Choices A, B, and C are incorrect because nursing diagnosis/problem list, nursing orders, and short-term goals do not encompass the desired timeframe or level of expected change in this scenario.
5. In the Gram Stain procedure, which component acts as the mordant?
- A. Crystal violet
- B. Methyl alcohol
- C. Iodine
- D. Safranin
Correct answer: C
Rationale: In the Gram Stain procedure, the mordant is Gram's Iodine. The purpose of the mordant is to form a complex with the crystal violet, enhancing its ability to bind to the cell wall. Crystal violet is actually the primary stain used in the Gram Stain procedure to initially color all cells. Methyl alcohol is the decolorizer that removes the crystal violet from certain cell types. Safranin is the counterstain used to stain those cells that did not retain the crystal violet stain after the decolorization step.
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