HESI RN
HESI Fundamentals
1. The healthcare provider attaches a pulse oximeter to a client's fingers and obtains an oxygen saturation reading of 91%. Which assessment finding most likely contributes to this reading?
- A. BP 142/88 mmHg
- B. 2+ edema of fingers and hands
- C. Radial pulse volume is +3
- D. Capillary refill time is 2 seconds
Correct answer: B
Rationale: Edema in the fingers and hands can impede the proper functioning of the pulse oximeter, leading to a falsely low oxygen saturation reading. Edema alters the transmission of light through the tissues, affecting the accuracy of the measurement. Therefore, the presence of edema in the fingers and hands is the most likely factor contributing to the low oxygen saturation reading of 91%.
2. When assessing a client with wrist restraints, the nurse observes that the fingers on the right hand are blue. What action should the nurse implement first?
- A. Loosen the right wrist restraint.
- B. Apply a pulse oximeter to the right hand.
- C. Compare hand color bilaterally.
- D. Palpate the right radial pulse.
Correct answer: A
Rationale: The priority nursing action is to restore circulation by loosening the restraint (A) because blue fingers (cyanosis) indicate decreased circulation. Comparing hand color bilaterally (C) and palpating the right radial pulse (D) are important assessments to gather more information, but they do not have the priority of addressing the decreased circulation by loosening the restraint. Applying a pulse oximeter (B) is not indicated in this scenario as it measures the saturation of hemoglobin with oxygen, which is not relevant when cyanosis is related to mechanical compression from the restraints.
3. The father of an 11-year-old client reports to the nurse that the client has been 'wetting the bed' since the passing of his mother and is concerned. Which action is most important for the nurse to take?
- A. Reassure the father that it is normal for a child to wet the bed after a traumatic event
- B. Inform the father that nocturnal emissions are abnormal and his son is developmentally delayed
- C. Inform the father that it is crucial to let the son know that bedwetting is a normal response to trauma
- D. Refer the father and the client to a psychologist
Correct answer: C
Rationale: Bedwetting after trauma, such as losing a parent, is common in children. The nurse should inform the father that it is crucial to let the son know that bedwetting is a normal response to trauma. Reassurance and understanding are essential in addressing the child's emotional needs during this difficult time. Choice A is incorrect as it focuses on puberty rather than trauma as the underlying cause. Choice B is incorrect as it provides inaccurate information about nocturnal emissions and developmental delay. Choice D is premature as the first step should be to provide education and support before considering a referral to a psychologist.
4. The client with chronic obstructive pulmonary disease (COPD) is being taught pursed-lip breathing by the nurse. What is the purpose of this technique?
- A. To promote oxygenation by removing secretions.
- B. To reduce the amount of air trapped in the lungs.
- C. To increase the amount of carbon dioxide exhaled.
- D. To slow the respiratory rate and improve air exchange.
Correct answer: C
Rationale: Pursed-lip breathing is used to increase the amount of carbon dioxide exhaled (C) in clients with chronic obstructive pulmonary disease (COPD). By doing so, it helps prevent air trapping and enhances gas exchange, ultimately improving respiratory efficiency. While removing secretions (A) and reducing air trapping (B) can be associated benefits to some extent, the primary goal of pursed-lip breathing is to optimize carbon dioxide elimination and enhance breathing mechanics. Slowing the respiratory rate (D) is not the primary purpose of pursed-lip breathing.
5. A client with cirrhosis and ascites is receiving furosemide 40 mg BID. The pharmacy provides 20 mg tablets. How many tablets should the client receive each day? [Enter numeric value only]
- A. 4 tablets
- B. 3 tablets
- C. 2 tablets
- D. 1 tablet
Correct answer: A
Rationale: To calculate the total daily dose of furosemide needed, 40 mg BID (twice a day) is 80 mg/day. Since each tablet is 20 mg, the client should receive a total of 4 tablets per day (80 mg ÷ 20 mg per tablet = 4 tablets). Therefore, the correct answer is 4 tablets. Choice B (3 tablets) is incorrect because it does not provide the correct total daily dose. Choice C (2 tablets) is incorrect as it would not meet the required dose of 80 mg/day. Choice D (1 tablet) is incorrect as it would be insufficient to achieve the prescribed daily dose.
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