HESI LPN
HESI Fundamentals Study Guide
1. 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.
2. When assessing a client's neurologic system, what should the nurse ask the client to close their eyes and identify?
- A. A word whispered by the nurse 30cm from the ear
- B. A number traced on the palm of the hand
- C. The vibration of a tuning fork placed on the foot
- D. A familiar object placed in the hand
Correct answer: B
Rationale: When a nurse asks a client to identify a number traced on the palm of the hand with their eyes closed, it assesses the client's ability to perceive touch sensations. This test specifically evaluates the tactile discrimination of the client. The other options do not test the client's ability to identify sensations accurately with eyes closed. Option A tests auditory perception, option C tests vibratory sense, and option D tests object recognition but not tactile discrimination, making them incorrect choices.
3. A nurse is planning care for a client who has fluid overload. Which of the following actions should the nurse plan to take first?
- A. Evaluate electrolytes
- B. Restrict fluid intake
- C. Administer diuretics
- D. Monitor vital signs
Correct answer: A
Rationale: When a client has fluid overload, the nurse's first action should be to evaluate electrolytes. Electrolyte levels can be significantly affected by fluid imbalances, and assessing them will guide the nurse in determining the appropriate interventions. Restricting fluid intake (choice B) may be necessary but is not the initial priority. Administering diuretics (choice C) should be based on the electrolyte evaluation and overall assessment. Monitoring vital signs (choice D) is essential but does not provide direct information on the client's electrolyte status, which is crucial in managing fluid overload.
4. When a client decides not to have surgery despite significant blockages of the coronary arteries, it is an example of which of the following ethical principles?
- A. Fidelity
- B. Autonomy
- C. Justice
- D. Nonmaleficence
Correct answer: B
Rationale: The correct answer is autonomy. Autonomy is the ethical principle that upholds an individual's right to make decisions about their healthcare, including the choice to refuse treatment or surgery. In this scenario, the client's decision not to have surgery despite the recommendation is an exercise of autonomy. Choice A, fidelity, refers to being faithful and keeping promises, which is not applicable in this situation. Choice C, justice, pertains to fair and equal distribution of resources and treatment, not the individual's right to make decisions. Choice D, nonmaleficence, relates to the obligation to do no harm, which is not directly applicable to the client's decision to refuse surgery.
5. Before digital removal of a fecal impaction, which type of enema should the nurse give to loosen the feces?
- A. Oil Retention
- B. Saline
- C. Soapy Water
- D. Hypertonic
Correct answer: A
Rationale: An oil retention enema containing mineral oil is the most suitable choice to help soften and loosen a fecal impaction before digital removal. Mineral oil lubricates and softens the stool, facilitating passage. Saline enemas draw water into the colon to promote bowel movements but may not effectively soften a fecal impaction. Soapy water enemas are primarily for cleansing, not softening stool. Hypertonic enemas eliminate fluid from the body and are not appropriate for loosening fecal impactions.
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