HESI LPN
HESI Fundamentals Practice Questions
1. A healthcare professional is preparing to administer lactated Ringer's (LR) IV 100 mL over 15 min. How many mL/hr should the IV infusion pump be set to deliver? (Round the answer to the nearest whole number. Do not use a trailing zero.)
- A. 400 mL/hr
- B. 200 mL/hr
- C. 300 mL/hr
- D. 250 mL/hr
Correct answer: A
Rationale: To administer 100 mL over 15 min, the IV pump should be set to deliver 400 mL/hr. This calculation is based on the concept that if 100 mL is given in 15 minutes, to find out how many milliliters are given in an hour, you would multiply by 4 (since 15 minutes is a quarter of an hour). Therefore, 100 mL x 4 = 400 mL per hour. Choices B, C, and D are incorrect as they do not reflect the correct calculation for the infusion rate required to administer 100 mL over 15 minutes.
2. A client with diabetes mellitus is being taught by a nurse about mixing regular and NPH insulin. Which of the following statements by the client indicates an understanding of the teaching?
- A. I should roll the NPH vial between my hands before drawing it up.
- B. I should draw up the NPH insulin before the regular insulin.
- C. I should inject air into the vial of regular insulin first.
- D. I should wait 10 minutes after mixing the insulin to inject it.
Correct answer: A
Rationale: The correct answer is A. Rolling the NPH vial between the hands before drawing it up ensures proper mixing of the insulin. Choice B is incorrect because regular insulin should be drawn up first to avoid contamination. Choice C is incorrect as injecting air into the vial of regular insulin is not necessary. Choice D is incorrect as there is no need to wait 10 minutes after mixing the insulin before injecting it.
3. While measuring a client’s oral temperature using an electronic thermometer, what action should the nurse take?
- A. Assist the client with oral hygiene before taking the temperature.
- B. Inquire whether the client has smoked in the last 30 minutes.
- C. Connect the red tip probe to the thermometer unit.
- D. Position the probe tip against the client’s buccal mucosa.
Correct answer: B
Rationale: The correct action for the nurse to take when measuring a client’s oral temperature using an electronic thermometer is to inquire whether the client has smoked in the last 30 minutes. Smoking can affect the accuracy of oral temperature readings. Providing oral hygiene (Choice A) is not directly related to ensuring accurate temperature measurement. Connecting the red tip probe (Choice C) is not specific to oral temperature measurement accuracy. Positioning the probe tip against the buccal mucosa (Choice D) is incorrect as oral temperature is typically measured under the tongue, not against the cheek.
4. UAP has lowered the head of the bed to change the linens for a client who is bedridden. Which observation...most immediate intervention by the nurse?
- A. A feeding is infusing at 40 mL/hr through an enteral feeding tube.
- B. The urine meter attached to the urinary drainage bag is completely full.
- C. There is a large dependent loop in the client's urinary drainage tubing.
- D. Purulent drainage is present around the insertion site of the feeding tube.
Correct answer: D
Rationale: The correct answer is D. Purulent drainage around the insertion site of the feeding tube indicates an infection, which requires immediate attention. This may be a sign of a serious complication that needs prompt nursing intervention to prevent further complications or deterioration in the client's condition. Choices A, B, and C do not indicate an immediate threat to the client's health. While option A highlights the infusion rate of the feeding, it does not pose an immediate risk compared to the presence of purulent drainage indicating infection.
5. During an assessment, a nurse is evaluating the breath sounds of an adult client diagnosed with pneumonia. Which of the following actions should the nurse take?
- A. Follow a systematic pattern from side-to-side moving down the client’s chest.
- B. Ask the client to breathe in deeply through their nose.
- C. Instruct the client to sit upright with their head slightly tilted backward.
- D. Place the diaphragm of the stethoscope on the client’s chest.
Correct answer: A
Rationale: When assessing breath sounds in a client with pneumonia, the nurse should follow a systematic pattern from side-to-side moving down the client’s chest. This approach ensures a comprehensive evaluation of breath sounds across different lung fields. Asking the client to breathe in deeply through their nose (Choice B) is not necessary for assessing breath sounds. Instructing the client to sit upright with their head slightly tilted backward (Choice C) is not directly related to assessing breath sounds and may not be required. Placing the diaphragm of the stethoscope on the client’s chest (Choice D) is not the correct technique for auscultating breath sounds, as the diaphragm should be used for this purpose.
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