HESI RN
HESI Fundamentals Practice Exam
1. The healthcare professional is preparing to administer 10 mL of liquid potassium chloride through a feeding tube, followed by 10 mL of liquid acetaminophen. Which action should the healthcare professional include in this procedure?
- A. Dilute each of the medications with sterile water prior to administration.
- B. Mix the medications in one syringe before opening the feeding tube.
- C. Administer water between the doses of the two liquid medications.
- D. Withdraw any fluid from the tube before instilling each medication.
Correct answer: C
Rationale: To maintain patency and ensure proper medication delivery, water should be instilled into the feeding tube between administering the two medications. This helps prevent clogging of the tube and ensures that both medications are delivered effectively without interference from remnants of the previous medication. Diluting the medications with sterile water before administration (choice A) is unnecessary and may alter the medication concentration. Mixing the medications in one syringe (choice B) could lead to interactions or chemical reactions between the medications. Withdrawing fluid from the tube before instilling each medication (choice D) is not required and may increase the risk of tube displacement or misplacement.
2. After surgery, a patient has decreased cardiac output. What is a likely observation by the nurse?
- A. Decreased urine output
- B. Increased urine output
- C. Flushing of the skin
- D. Hyperventilation
Correct answer: A
Rationale: A decrease in cardiac output can lead to decreased blood flow to the kidneys, resulting in decreased urine output. The kidneys rely on adequate blood supply to filter waste and produce urine. Therefore, a decreased urine output is a common observation when cardiac output is reduced. Choices B, C, and D are incorrect. Increased urine output is not typically associated with decreased cardiac output; flushing of the skin is more related to vasodilation, and hyperventilation is not directly linked to decreased cardiac output.
3. A client is receiving external radiation therapy for lung cancer. Which intervention is most important for the nurse to include in the client's plan of care?
- A. Encourage the client to use sunscreen when outdoors.
- B. Apply a heating pad to the radiation site.
- C. Instruct the client to avoid using deodorant on the skin near the radiation site.
- D. Advise the client to increase intake of green leafy vegetables.
Correct answer: C
Rationale: Instructing the client to avoid using deodorant on the skin near the radiation site (C) is crucial to prevent skin irritation and potential adverse reactions during external radiation therapy. Sunscreen (A), heating pad (B), and dietary changes (D) are less pertinent in this situation.
4. The nurse is preparing a client for surgery. What action is most important for the nurse to take?
- A. Ensure that the client signs the consent form.
- B. Review the client's allergies with the surgical team.
- C. Confirm the client's identity using two identifiers.
- D. Verify that the surgical site is marked.
Correct answer: A
Rationale: Ensuring that the client signs the consent form (A) is the most crucial action before surgery. The consent form is legally and ethically necessary for the procedure to proceed. While reviewing allergies (B), confirming identity (C), and verifying the surgical site (D) are essential steps, obtaining the client's informed consent takes precedence to protect the client's rights and ensure a safe surgical experience.
5. 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%.
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