HESI LPN
HESI Practice Test for Fundamentals
1. A client is being taught how to administer ear drops. Which of the following statements should the nurse identify as an indication that the client understands?
- A. I will straighten my ear canal by pulling my ear down and back.
- B. I will gently apply pressure with my finger to the front part of my ear after putting in the drops.
- C. I will insert the nozzle of the ear drop bottle snugly into my ear before squeezing the drops in.
- D. After the drops are in, I will place a cotton ball all the way into my ear canal.
Correct answer: B
Rationale: The correct answer is B. Gently applying pressure to the front part of the ear after administering drops helps with absorption. Pulling the ear down and back is a correct technique for adults. Snugly inserting the nozzle of the ear drop bottle or placing a cotton ball all the way into the ear canal is unnecessary and can potentially cause harm or discomfort. Therefore, choices A, C, and D are incorrect.
2. A nurse in a provider's office is assessing the deep tendon reflexes of a client. Which of the following techniques should the nurse identify as indicating the correct method for eliciting the client's patellar reflex?
- A. Tap just below the knee
- B. Tap on the upper thigh
- C. Tap on the ankle
- D. Tap on the lower leg
Correct answer: A
Rationale: The correct technique for eliciting the client's patellar reflex is to tap just below the knee. This action stimulates the stretch receptors in the patellar tendon, leading to a reflex contraction of the quadriceps muscle and extension of the lower leg. Tapping on the upper thigh (Choice B) would not elicit the patellar reflex as it targets a different area. Similarly, tapping on the ankle (Choice C) or tapping on the lower leg (Choice D) would not produce the desired response associated with the patellar reflex, making them incorrect choices.
3. Which statement by the mother indicates that the mother understands safety precautions with her four-month-old infant and her 4-year-old child?
- A. I secure the infant car seat in the back seat facing backwards.
- B. I place my infant in the middle of the living room floor on a blanket to play with my 4-year-old while I make supper in the kitchen.
- C. My sleeping baby looks adorable in the crib with the little buttocks up in the air while the four-year-old naps on the sofa.
- D. I have the 4-year-old hold and help feed the four-month-old a bottle in the kitchen while I make supper.
Correct answer: D
Rationale: Choice D is the correct answer because having the 4-year-old help feed the four-month-old a bottle in the kitchen while the mother makes supper shows supervision of the infant by the older child in a safe environment. This choice indicates that the mother understands safety precautions by involving the older child in a caregiving task under her supervision. Choices A, B, and C are incorrect because they involve unsafe practices such as placing the infant on the floor unsupervised, positioning the infant car seat in the front seat, and not providing direct supervision of the children during naptimes.
4. A health care provider has prescribed isoniazid (Laniazid) for a client. Which instruction should the LPN give the client about this medication?
- A. Prolonged use does not typically cause dark concentrated urine.
- B. It is not necessary to take the medication on an empty stomach for optimal absorption.
- C. Avoid taking the medication with aluminum hydroxide to minimize GI upset.
- D. Drinking alcohol daily can cause drug-induced hepatitis.
Correct answer: D
Rationale: The correct answer is D. When taking isoniazid, alcohol consumption should be avoided as it can increase the risk of liver damage, potentially leading to drug-induced hepatitis. Choices A, B, and C are incorrect. Prolonged use of isoniazid does not typically cause dark concentrated urine; it is not necessary to take the medication on an empty stomach for optimal absorption; and it is not recommended to take isoniazid with aluminum hydroxide to minimize GI upset.
5. Which serum blood finding in diabetic ketoacidosis alerts the nurse that immediate action is required?
- A. pH below 7.3
- B. Potassium of 5.0
- C. HCT of 60
- D. PaO2 of 79%
Correct answer: C
Rationale: A hematocrit (HCT) of 60 indicates severe dehydration, a critical condition in diabetic ketoacidosis that requires immediate intervention. Severe dehydration can lead to hypovolemic shock and organ failure. While a low pH below 7.3 is indicative of acidosis, it may not require immediate action compared to severe dehydration. A potassium level of 5.0 is within the normal range and not a critical finding in this scenario. PaO2 of 79% reflects oxygenation status, which is important but not the most critical finding requiring immediate action in diabetic ketoacidosis.
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