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 with a diagnosis of asthma is receiving albuterol (Proventil) via a metered-dose inhaler (MDI). Which assessment finding indicates that the medication is effective?
- A. Increased oxygen saturation.
- B. Decreased respiratory rate.
- C. Absence of audible wheezing.
- D. Improved exercise tolerance.
Correct answer: A
Rationale: Increased oxygen saturation (A) is the most direct indicator of the effectiveness of albuterol (Proventil) in improving breathing. Oxygen saturation reflects the amount of oxygen in the blood, showing that the albuterol is helping with air exchange in the lungs. While decreased respiratory rate (B), absence of audible wheezing (C), and improved exercise tolerance (D) are positive outcomes, they are secondary to oxygen saturation. Oxygen saturation directly reflects the improvement in the client's respiratory status and the effectiveness of the medication.
3. The healthcare provider receives a report that a client with an indwelling urinary catheter has an output of 150 mL for the previous 6-hour shift. Which intervention should the healthcare provider implement first?
- A. Check the drainage tubing for a kink
- B. Review the intake and output record
- C. Notify the healthcare provider
- D. Give the client 8 oz of water to drink
Correct answer: A
Rationale: The first intervention should be to check the drainage tubing for a kink. This step is crucial as any kinks in the tubing could obstruct urine flow, leading to a decreased output. By ensuring the tubing is free from any obstructions, the healthcare provider can address a potential mechanical issue causing the low output before considering other interventions. Reviewing the intake and output record may provide valuable information but should come after ensuring the tubing is clear. Notifying the healthcare provider can be done later if needed, but the immediate concern is to check for any obstructions. Giving the client water to drink may be necessary depending on the assessment findings, but addressing a possible kink in the tubing takes precedence.
4. A healthcare professional is teaching a new colleague about the correct administration of subcutaneous (subQ) injections. Which instruction should the healthcare professional include?
- A. Insert the needle at a 90-degree angle for subQ injections
- B. Aspirate for blood return before injecting the medication
- C. Pinch the skin before inserting the needle
- D. Massage the site after administering the injection
Correct answer: C
Rationale: Pinching the skin before inserting the needle is essential in elevating the subcutaneous tissue away from the muscle. This technique ensures that the medication is administered into the correct tissue layer, promoting proper absorption and decreasing the risk of injecting into muscle tissue.
5. When emptying 350 mL of pale yellow urine from a client's urinal, the nurse notes that this is the first time the client has voided in 4 hours. Which action should the nurse take next?
- A. Record the amount on the client's fluid output record.
- B. Encourage the client to increase oral fluid intake.
- C. Notify the healthcare provider of the findings.
- D. Palpate the client's bladder for distention.
Correct answer: A
Rationale: The nurse should record the amount on the client's fluid output record because the 350 mL of pale yellow urine is a normal finding. This indicates appropriate urine output, so encouraging increased fluid intake or notifying the healthcare provider is not necessary at this time. Additionally, palpating the client's bladder for distention is not indicated based on the normal urine output observed.
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