HESI LPN
HESI Fundamentals Study Guide
1. When admitting a 5-month-old who has vomited 9 times in the past 6 hours, what should the healthcare provider observe for signs of which overall imbalance?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Increased serum hemoglobin levels
- D. Decreased serum potassium levels
Correct answer: B
Rationale: When a 5-month-old infant vomits multiple times, there is a risk of developing metabolic alkalosis due to the loss of stomach acid. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. It is caused by the loss of hydrogen ions from the body, often through vomiting. Metabolic acidosis (choice A) is unlikely in this scenario because it is more commonly associated with conditions like renal failure or diabetic ketoacidosis. Choice C, increased serum hemoglobin levels, is not typically a direct consequence of vomiting. Choice D, decreased serum potassium levels, may occur with vomiting but is not the primary concern when a patient is vomiting excessively.
2. During a health assessment, a client who takes herbal supplements makes a statement indicating an understanding of their use. Which statement is most indicative of this understanding?
- A. I use garlic for my menopausal symptoms.
- B. I use ginger when I get car sick.
- C. I take ginkgo biloba for headaches.
- D. I take echinacea to control cholesterol.
Correct answer: C
Rationale: The correct answer is C because ginkgo biloba is commonly used to help with headaches, among other benefits. Choices A, B, and D are incorrect because garlic is not typically used for menopausal symptoms, ginger is mainly used for nausea and vomiting (not car sickness specifically), and echinacea is not known to control cholesterol.
3. During a skin assessment, a client expresses concern about skin cancer due to a lesion on the anterior thigh. Which of the following findings should the nurse report to the provider as a possible indication of a skin malignancy?
- A. An uneven shape
- B. A uniformly colored lesion
- C. A lesion that is small and flat
- D. A lesion that is less than 1 cm in diameter
Correct answer: A
Rationale: An uneven shape of a lesion is a common characteristic of malignant skin lesions. Asymmetric or irregularly shaped lesions are concerning for skin cancer and should be reported promptly for further evaluation and management. Choice B, a uniformly colored lesion, is more indicative of a benign lesion as malignant lesions often exhibit variations in color. Choice C, a lesion that is small and flat, does not necessarily indicate malignancy by itself. Choice D, a lesion that is less than 1 cm in diameter, is more suggestive of a benign lesion, as malignant lesions are typically larger in size.
4. A client with herpes zoster asks the nurse about using complementary and alternative therapies for pain control. The nurse should inform the client that this condition is a contraindication for which of the following therapies?
- A. Biofeedback
- B. Aloe
- C. Feverfew
- D. Acupuncture
Correct answer: D
Rationale: Acupuncture is contraindicated for clients with herpes zoster due to the risk of introducing an open portal on the skin, which can increase the risk of infection. This therapy involves inserting needles into specific points on the body, potentially causing skin trauma and providing a route for the virus to spread. Biofeedback, aloe, and feverfew are not contraindicated for clients with herpes zoster and can be considered for pain management in this condition. Biofeedback involves using electronic devices to help individuals learn to control physiological processes, aloe is a plant known for its skin-soothing properties, and feverfew is an herb that has been used for pain relief.
5. A healthcare professional is preparing to administer enoxaparin subcutaneously to a client. Which of the following actions should the healthcare professional take?
- A. Administer the medication with the needle at a 45-degree angle.
- B. Administer the medication with the needle at a 90-degree angle.
- C. Inject the medication into the muscle.
- D. Pinch the skin before injecting.
Correct answer: B
Rationale: Enoxaparin is a medication that is administered subcutaneously, which means it should be injected into the fatty tissue layer beneath the skin. Administering enoxaparin at a 90-degree angle ensures proper absorption and reduces the risk of injecting the medication into muscle tissue, which could affect its effectiveness. Injecting the medication at a 45-degree angle may lead to improper absorption as it may not reach the subcutaneous tissue adequately. Injecting the medication into the muscle instead of subcutaneously can alter the absorption rate and therapeutic effects. Pinching the skin before injecting is not necessary for administering enoxaparin subcutaneously and may cause unnecessary discomfort to the client.
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