HESI LPN
HESI Fundamentals Study Guide
1. A healthcare professional is preparing to inject heparin subcutaneously for a client who is postoperative. Which of the following actions should the healthcare professional take?
- A. Use a 25-gauge needle.
- B. Select a site on the client’s abdomen.
- C. Use the Z-track technique to displace the skin on the injection site.
- D. Observe for bleb formation to confirm proper placement.
Correct answer: B
Rationale: For subcutaneous injections like heparin, a 25-27 gauge needle is recommended, making choice A incorrect. The abdomen is a commonly used site for heparin injection due to its consistent absorption and convenience, making choice B the correct answer. The Z-track technique is not necessary for subcutaneous injections, making choice C unnecessary. Observing for bleb formation is not a standard practice for confirming proper placement of subcutaneous heparin, making choice D incorrect. Therefore, the correct action is to select a site on the client's abdomen for the injection.
2. A nurse is preparing to administer methylprednisolone 10 mg by IV bolus. The amount available is methylprednisolone injection 40-mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Do not use a trailing zero.)
- A. 0.3 mL
- B. 0.25 mL
- C. 0.4 mL
- D. 0.5 mL
Correct answer: A
Rationale: To calculate the mL to administer, use the formula: Dose required (mg) ÷ Stock concentration (mg/mL) = Volume to administer (mL). In this case, 10 mg ÷ 40 mg/mL = 0.25 mL. However, when rounding to the nearest tenth, the answer should be 0.3 mL. Therefore, the nurse should administer 0.3 mL. Choice A is the correct answer. Choice B (0.25 mL) is the result obtained before rounding. Choice C (0.4 mL) and Choice D (0.5 mL) are incorrect calculations.
3. A healthcare professional is reviewing the medical record of a client who has hypocalcemia. The healthcare professional should identify which of the following findings as a risk factor for the development of this electrolyte imbalance?
- A. Crohn’s disease
- B. Postoperative status following appendectomy
- C. History of bone cancer
- D. Hyperthyroidism
Correct answer: A
Rationale: Crohn’s disease is known to impair calcium absorption, which can lead to hypocalcemia. This condition affects the intestines and can disrupt the normal absorption of nutrients, including calcium. Postoperative status following appendectomy, history of bone cancer, and hyperthyroidism are typically not directly associated with a higher risk of developing hypocalcemia compared to Crohn’s disease.
4. A nurse is caring for a client who has terminal lung cancer. The nurse observes the client’s family assisting with all ADLs. Which of the following rationales for self-care should the nurse communicate to the family?
- A. Allowing the client to function independently will strengthen muscles and promote healing.
- B. The client needs privacy at times for self-reflection and organizing life.
- C. The client’s sense of loss can be lessened through retaining control of some areas of life.
- D. Performing ADLs is a requirement prior to discharge from an acute care facility.
Correct answer: C
Rationale: The correct answer is C. In situations like terminal illness, allowing clients to perform activities of daily living (ADLs) can help maintain their sense of control and dignity, providing comfort and a sense of normalcy amidst their health challenges. Choice A is incorrect because in a terminal stage, the focus is not on muscle strength or promoting physical healing but rather on enhancing the client's emotional well-being. Choice B, while highlighting the importance of privacy, is not directly addressing the client's need for control and autonomy. Choice D is incorrect as the priority in this scenario is not related to discharge requirements but rather the client's emotional and psychological needs during their terminal illness.
5. During auscultation of a client experiencing chest pain worsened by inspiration, a nurse hears a high-pitched scratching sound in both systole and diastole with the diaphragm of the stethoscope placed at the left sternal border. Which of the following heart sounds should the nurse document?
- A. Pericardial friction rub
- B. Murmur
- C. S1 and S2
- D. Bruit
Correct answer: A
Rationale: The correct answer is 'Pericardial friction rub.' A pericardial friction rub is a high-pitched, scratching sound heard in both systole and diastole, which is characteristic of pericardial inflammation. This sound is different from a murmur, which is a swooshing or blowing sound due to turbulent blood flow. S1 and S2 are normal heart sounds, and a bruit is a whooshing sound caused by turbulent blood flow in an artery, not related to pericardial inflammation.
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