korotkoff sounds are
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NCLEX-RN

NCLEX RN Actual Exam Test Bank

1. What are Korotkoff sounds?

Correct answer: B

Rationale: Korotkoff sounds are the sounds that occur when blood flows in an artery that has been temporarily compressed during a blood pressure measurement. These sounds result from the vibration of blood against the artery walls as the pressure cuff is released. There are five distinct phases of Korotkoff sounds, which healthcare providers are trained to identify during blood pressure assessment. The correct answer, choice B, accurately describes the nature of Korotkoff sounds and how they are generated. Choices A, C, and D are incorrect because Korotkoff sounds are not specific to diastole, not limited to skilled cardiologists, and categorized into five phases, not six.

2. When auscultating the blood pressure of a 25-year-old patient, the nurse notices that the phase I Korotkoff sounds begin at 200 mm Hg. At 100 mm Hg, the Korotkoff sounds muffle. At 92 mm Hg, the Korotkoff sounds disappear. How should the nurse record this patient's blood pressure?

Correct answer: A

Rationale: When auscultating blood pressure, it is crucial to note the points at which Korotkoff sounds change. In adults, the last audible sound indicates the diastolic pressure. In this case, the Korotkoff sounds muffle at 100 mm Hg and disappear at 92 mm Hg. Therefore, the blood pressure should be recorded as systolic/diastolic, which is 200/92. Choices B, C, and D are incorrect because they do not reflect the correct points where the Korotkoff sounds change during blood pressure measurement.

3. When evaluating the temperature of older adults, what aspect should the healthcare provider remember about an older adult's body temperature?

Correct answer: A

Rationale:

4. The nurse is unable to palpate the right radial pulse on a patient. What would the nurse do next?

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. For a patient with cirrhosis, which of the following nursing actions can the registered nurse (RN) delegate to unlicensed assistive personnel (UAP)?

Correct answer: B

Rationale: Providing oral hygiene after a meal is an appropriate task to delegate to unlicensed assistive personnel (UAP) as it falls within their scope of practice. UAP can assist with basic personal care activities like oral hygiene. Assessing the patient for jaundice and palpating the abdomen for distention involve making clinical assessments that require a higher level of education and training, typically performed by licensed practical/vocational nurses (LPNs/LVNs) or registered nurses (RNs). Assisting the patient to choose the diet also requires specialized knowledge and would be more appropriate for a nurse to address, considering the complexity of dietary requirements in cirrhosis.

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