HESI RN
HESI Fundamentals
1. The healthcare provider attaches a pulse oximeter to a client's fingers and obtains an oxygen saturation reading of 91%. Which assessment finding most likely contributes to this reading?
- A. BP 142/88 mmHg
- B. 2+ edema of fingers and hands
- C. Radial pulse volume is +3
- D. Capillary refill time is 2 seconds
Correct answer: B
Rationale: Edema in the fingers and hands can impede the proper functioning of the pulse oximeter, leading to a falsely low oxygen saturation reading. Edema alters the transmission of light through the tissues, affecting the accuracy of the measurement. Therefore, the presence of edema in the fingers and hands is the most likely factor contributing to the low oxygen saturation reading of 91%.
2. A client is admitted to the hospital with a diagnosis of pneumonia. Which laboratory test result should the nurse monitor to evaluate the client’s respiratory function?
- A. Arterial blood gases (ABGs)
- B. Complete blood count (CBC)
- C. Blood glucose levels
- D. Serum electrolyte levels
Correct answer: A
Rationale: Arterial blood gases (ABGs) are the most appropriate laboratory test to monitor respiratory function in a client with pneumonia. ABGs provide valuable information on oxygenation status, acid-base balance, and how well the lungs are exchanging gases. This information helps in assessing the effectiveness of ventilation and oxygenation, guiding treatment decisions, and evaluating the overall respiratory status of the client.
3. An older adult male client is admitted to the medical unit following a fall at home. When undressing him, the nurse notes that he is wearing an adult diaper, and skin breakdown is obvious over his sacral area. What action should the nurse implement first?
- A. Establish a toileting schedule to decrease episodes of incontinence
- B. Complete a functional assessment of the client’s self-care abilities
- C. Apply a barrier ointment to intact areas that may be exposed to moisture
- D. Determine the size and depth of skin breakdown over the sacral area
Correct answer: D
Rationale: The initial step the nurse should take when faced with skin breakdown over the sacral area of the client is to determine the size and depth of the affected area. Assessing and documenting these aspects are crucial before initiating any treatment. This evaluation will guide the nurse in developing an appropriate care plan to address the skin breakdown effectively. Options A, B, and C are not the first steps to take in this situation. While establishing a toileting schedule and completing a functional assessment are important, assessing the size and depth of the skin breakdown is the priority to initiate proper treatment. Applying a barrier ointment without assessing the extent of the breakdown may not address the underlying issue effectively.
4. Before administering a client's medication, the nurse assesses a change in the client's condition and decides to withhold the medication until consulting with the healthcare provider. After consultation with the healthcare provider, the dose of the medication is changed, and the nurse administers the newly prescribed dose an hour later than the originally scheduled time. What action should the nurse take in response to this situation?
- A. Notify the charge nurse that a medication error occurred.
- B. Submit a medication variance report to the supervisor.
- C. Document the events that occurred in the nurse's notes.
- D. Discard the original medication administration record.
Correct answer: C
Rationale: In this scenario, the nurse acted appropriately by withholding the medication, consulting with the healthcare provider, and administering the newly prescribed dose, albeit with a delay. The correct course of action for the nurse is to document all these events in the nurse's notes. Documenting the sequence of actions taken is crucial for maintaining an accurate record of the client's care, ensuring transparency, and providing essential information for future reference and continuity of care. Notifying the charge nurse or submitting a medication variance report may not be necessary as the situation was managed appropriately, and discarding the original medication administration record is not recommended as it is part of the client's medical record and should be kept for documentation purposes.
5. A client with a diagnosis of coronary artery disease is receiving atorvastatin (Lipitor). Which laboratory test should the nurse monitor to evaluate the effectiveness of this medication?
- A. Complete blood count (CBC)
- B. Serum potassium level
- C. Liver function tests (LFTs)
- D. Serum cholesterol level
Correct answer: C
Rationale: To evaluate the effectiveness of atorvastatin (Lipitor), the nurse should monitor liver function tests (LFTs) (C) because this medication can impact liver function. Complete blood count (CBC) (A), serum potassium level (B), and serum cholesterol level (D) are not directly indicative of the medication's effectiveness in managing coronary artery disease.
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