NCLEX-RN
NCLEX RN Predictor Exam
1. Each small square on the EKG paper is:
- A. 0.04 seconds long and 5mm tall
- B. 0.2 seconds long and 5mm tall
- C. 0.04 seconds long and 20mm tall
- D. 0.04 seconds long and 1mm tall
Correct answer: D
Rationale: Each small square on an EKG paper represents 0.04 seconds long and 1mm tall. This standardization is essential for accurate measurements. One large square on EKG paper consists of 5 small squares in length and 5 small squares in height, which equals 0.2 seconds long and 5mm tall (0.5 mV). Choice A is incorrect because while the duration is correct, the height mentioned is not accurate. Choice B is incorrect as it provides the correct height but the duration is inaccurate. Choice C is incorrect as the height mentioned is exaggerated, and the duration is correct but the height is not. Therefore, the correct answer is 0.04 seconds long and 1mm tall.
2. When assessing a patient's pulse, which of the following characteristics would the nurse also notice?
- A. Force
- B. Pallor
- C. Capillary refill time
- D. Timing in the cardiac cycle
Correct answer: A
Rationale: When assessing a patient's pulse, the nurse should observe characteristics such as rate, rhythm, and force. Force refers to the strength or amplitude of the pulse, which provides important information about cardiac output. Pallor is the paleness of the skin and is not directly related to pulse assessment. Capillary refill time is used to assess peripheral perfusion and is not specifically part of pulse assessment. Timing in the cardiac cycle is a broader concept and not a characteristic directly assessed during a pulse examination. Therefore, choice A, 'Force,' is the correct answer as it aligns with the standard parameters evaluated during pulse assessment.
3. Which contraindication should be assessed for prior to administering an immunization to a child?
- A. Mild cold symptoms
- B. Chronic asthma
- C. Depressed immune system
- D. Allergy to eggs
Correct answer: C
Rationale: Before administering immunizations to children, it is crucial to assess for contraindications. A depressed immune system, such as that seen in conditions like HIV or due to chemotherapy, is a significant contraindication. Immunizations may not be safe or effective in children with compromised immune systems. Mild cold symptoms, although not ideal, are not a contraindication for routine immunizations. Chronic asthma, while a consideration, is not a direct contraindication for routine immunizations. Allergy to eggs is a contraindication for specific vaccines, such as influenza vaccine that is grown in eggs, but it is not a contraindication for all immunizations.
4. The nurse is unable to palpate the right radial pulse on a patient. What would the nurse do next?
- A. Auscultate over the area with a fetoscope.
- B. Use a goniometer to measure the pulsations.
- C. Use a Doppler device to check for pulsations over the area.
- D. Check for the presence of pulsations with a stethoscope.
Correct answer: C
Rationale: When a nurse is unable to palpate a radial pulse, the next step is to use a Doppler device to check for pulsations over the area. Doppler devices are specifically designed to augment pulse or blood pressure measurements. Auscultating with a fetoscope is used to listen to fetal heart tones and is not relevant in this scenario. Goniometers are used to measure joint range of motion and are not used to assess pulses. Stethoscopes are primarily used to auscultate breath, bowel, and heart sounds, not to check for pulsations in peripheral pulses. Therefore, the correct course of action when unable to palpate a pulse is to utilize a Doppler device to assess for pulsations in the radial pulse area.
5. 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.
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