NCLEX-RN
NCLEX RN Exam Preview Answers
1. Which of these statements is true regarding the use of Standard Precautions in the healthcare setting?
- A. Standard Precautions apply to all body fluids, except sweat.
- B. Alcohol-based hand rub should be used if hands are not visibly dirty.
- C. Standard Precautions are intended for use with all patients, regardless of their risk or presumed infection status.
- D. Standard Precautions are to be used only when non-intact skin, excretions containing visible blood, or expected contact with mucous membranes are present.
Correct answer: C
Rationale: Standard Precautions are designed to reduce the risk for transmission of microorganisms from both recognized and unrecognized sources. They are intended for use with all patients, regardless of their risk or presumed infection status. Standard Precautions apply to all body fluids, secretions, and excretions except sweat - whether or not they contain visible blood, non-intact skin, or mucous membranes. Hands should be washed with soap and water if visibly soiled with blood or body fluids. Alcohol-based hand rubs can be used if hands are not visibly soiled. Choice A is incorrect because Standard Precautions apply to all body fluids, secretions, and excretions except sweat. Choice B is incorrect because alcohol-based hand rub should be used when hands are not visibly dirty. Choice D is incorrect because Standard Precautions are not limited to situations involving non-intact skin, excretions with visible blood, or expected mucous membrane contact.
2. When evaluating the temperature of older adults, what aspect should the healthcare provider remember about an older adult's body temperature?
- A. The body temperature of the older adult is lower than that of a younger adult.
- B. An older adult's body temperature is approximately the same as that of a young child.
- C. Body temperature varies based on the type of thermometer used.
- D. In older adults, body temperature can fluctuate widely due to less effective heat control mechanisms.
Correct answer: A
Rationale:
3. When teaching a patient to use the three-point gait technique of crutch use:
- A. The injured leg moves ahead at the same time as both crutches.
- B. One crutch moves at a time and is then followed by the injured leg.
- C. Both crutches move ahead at the same time followed by both legs at the same time.
- D. None of the above are correct.
Correct answer: A
Rationale: The correct technique for a three-point gait involves the injured leg moving simultaneously with both crutches, followed by the uninjured leg. This gait pattern is utilized when the patient is unable to bear full weight on one of their legs. Choice A accurately describes the appropriate sequence of movements for the three-point gait technique. Choices B and C do not accurately reflect the correct pattern of movement during the three-point gait technique, making them incorrect. Choice D is incorrect as there is a correct option among the choices provided.
4. What type of blood pressure measurement error is most likely to occur if the nurse does not check for the presence of an auscultatory gap?
- A. Diastolic blood pressure may not be heard.
- B. Diastolic blood pressure may be falsely low.
- C. Systolic blood pressure may be falsely low.
- D. Systolic blood pressure may be falsely high.
Correct answer: C
Rationale: If an auscultatory gap is undetected, a falsely low systolic reading may occur. This gap can lead to an underestimation of the systolic blood pressure, causing potential misinterpretation of the patient's condition. The diastolic blood pressure may not be heard due to the gap, but the critical issue in this scenario is the risk of underestimating systolic blood pressure, which can impact clinical decision-making. Choices B, C, and D are incorrect because the key concern in this context is the potential for a falsely low systolic blood pressure reading when an auscultatory gap is not assessed.
5. The Sinoatrial Node (SA) is located within which of the following heart structures?
- A. Mitral Valve
- B. Right Ventricle
- C. Right Atrium
- D. Left Atrium
Correct answer: C
Rationale: The Sinoatrial (SA) Node, often called the heart's natural pacemaker, is situated within the upper wall of the Right Atrium. It initiates the electrical impulses that regulate the heartbeat. Choices A, B, and D are incorrect because the SA node is not located in the Mitral Valve, Right Ventricle, or Left Atrium. It is specifically positioned in the Right Atrium to coordinate the heart's rhythm and timing.
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