HESI LPN
HESI Fundamentals Test Bank
1. A nurse receives a report about a client who has 0.9% sodium chloride infusing IV at 125 mL/hr. When the nurse performs the initial assessment, they note that the client has received only 80 mL over the last 2 hrs. Which of the following actions should the nurse take first?
- A. Check the IV tubing for obstruction
- B. Increase the infusion rate
- C. Administer a bolus of fluid
- D. Replace the IV catheter
Correct answer: A
Rationale: The correct first action for the nurse to take in this situation is to check the IV tubing for obstruction. By doing this, the nurse can assess if there is any blockage or kink in the tubing that is impeding the flow of the IV solution. This step is crucial as it helps in identifying the reason for the inadequate infusion rate. Increasing the infusion rate (Choice B) without first checking for obstructions can lead to potential complications if there is a blockage. Administering a bolus of fluid (Choice C) may not be appropriate without addressing the cause of the decreased infusion rate. Similarly, replacing the IV catheter (Choice D) is not the initial priority unless obstruction is ruled out and other troubleshooting measures have been taken.
2. A client with a diagnosis of myocardial infarction (MI) is being treated. Which laboratory value would be most concerning?
- A. Troponin level of 0.5 ng/mL
- B. Creatine kinase-MB (CK-MB) of 5.0 ng/mL
- C. Serum potassium of 4.5 mEq/L
- D. Blood glucose of 180 mg/dL
Correct answer: A
Rationale: A troponin level of 0.5 ng/mL is elevated, indicating myocardial damage, making it the most concerning finding in a client with a myocardial infarction (MI). Troponin is a highly specific marker for cardiac muscle damage, and elevated levels suggest ongoing injury to the heart muscle. While Creatine kinase-MB (CK-MB) is also a cardiac enzyme, troponin is more specific and sensitive for myocardial damage. Serum potassium and blood glucose levels are important parameters to monitor in MI patients, but in this scenario, the elevated troponin level takes precedence as it directly reflects cardiac injury.
3. When reviewing a client’s fluid and electrolyte status, what should the nurse report to the provider?
- A. Potassium 5.4
- B. Sodium 140
- C. Calcium 8.6
- D. Magnesium 2.0
Correct answer: A
Rationale: The correct answer is A: 'Potassium 5.4'. A potassium level of 5.4 is elevated (normal range is typically 3.5-5.0 mEq/L) and may indicate hyperkalemia, which can have serious cardiac implications. Elevated potassium levels can lead to life-threatening arrhythmias, so immediate reporting and intervention are necessary. Choice B, 'Sodium 140', falls within the normal range (135-145 mEq/L) and does not require immediate reporting. Choice C, 'Calcium 8.6', falls within the normal range (8.5-10.5 mg/dL) and is not an immediate concern. Choice D, 'Magnesium 2.0', is within the normal range (1.5-2.5 mEq/L) and does not need urgent reporting. Therefore, the nurse should prioritize reporting the elevated potassium level as it poses the most immediate risk.
4. The healthcare professional is preparing to administer an intramuscular injection to an adult client. Which site is most appropriate for the LPN/LVN to use?
- A. Deltoid muscle
- B. Ventrogluteal site
- C. Dorsogluteal site
- D. Rectus femoris site
Correct answer: B
Rationale: The ventrogluteal site is the most appropriate and safest site for administering an intramuscular injection to an adult client. It is preferred due to its thick muscle mass and fewer major blood vessels and nerves in the area, reducing the risk of injury or complications. The deltoid muscle is commonly used for vaccines and small-volume injections but may not be suitable for larger volumes. The dorsogluteal site has fallen out of favor due to the risk of injury to the sciatic nerve and other underlying structures. The rectus femoris site is not typically used for intramuscular injections in adults.
5. A patient with stomatitis is receiving oral care education from a nurse. Which instructions will the nurse provide?
- A. Avoid commercial mouthwashes.
- B. Avoid normal saline rinses.
- C. Brush with a hard toothbrush.
- D. Brush with an alcohol-based toothpaste.
Correct answer: A
Rationale: The correct instruction for a patient with stomatitis is to avoid commercial mouthwashes. Commercial mouthwashes often contain alcohol and other ingredients that can irritate the already inflamed oral mucosa in patients with stomatitis. Avoiding commercial mouthwashes helps prevent further irritation and discomfort. Choice B is incorrect because normal saline rinses are gentle and can help soothe the oral mucosa in patients with stomatitis. Choice C is incorrect because a soft toothbrush should be used to prevent further irritation or injury to the gums. Choice D is incorrect because an alcohol-based toothpaste can be too harsh and drying for patients with stomatitis.
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