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. Which instruction is most important for the nurse to include when teaching a client with limited mobility strategies to prevent venous thrombosis?
- A. Perform cough and deep breathing exercises hourly.
- B. Turn from side to side in bed at least every 2 hours.
- C. Dorsiflex and plantarflex the feet 10 times each hour.
- D. Drink approximately 4 ounces of water every hour.
Correct answer: C
Rationale: The most crucial instruction for a client with limited mobility to prevent venous thrombosis is to perform dorsiflexion and plantarflexion of the feet 10 times each hour. These exercises help promote venous return, reducing the risk of thrombosis by preventing blood stasis in the lower extremities. While other measures like turning in bed and staying hydrated are beneficial, promoting venous return through foot exercises is the priority in preventing venous thrombosis in clients with limited mobility. Dorsiflexion and plantarflexion directly target the calf muscle pump, aiding in the circulation of blood back to the heart and preventing clot formation. The other options, such as cough and deep breathing exercises, turning in bed, and hydration, are important for overall health but do not directly address venous stasis and thrombosis prevention in the same way as foot exercises.
3. Which instruction should be included in the discharge teaching plan for an adult client with hypernatremia?
- A. Monitor daily urine output volume
- B. Drink plenty of water whenever thirsty
- C. Use salt tablets for sodium content
- D. Review food labels for sodium content
Correct answer: D
Rationale: In hypernatremia, there is an excess of sodium in the blood. Reviewing food labels for sodium content is crucial as it helps the client identify and avoid high-sodium foods, which can contribute to elevated sodium levels. Monitoring urine output volume may be important for other conditions but is not directly related to managing hypernatremia. Drinking water whenever thirsty is generally good advice for staying hydrated but does not specifically address the issue of high sodium levels. Using salt tablets would worsen hypernatremia by further increasing sodium intake.
4. What action should be taken when adding sterile liquids to a sterile field?
- A. Use an expired sterile liquid if the bottle is sealed and unopened.
- B. Consider the sterile field contaminated if it becomes wet during the procedure.
- C. Remove the container cap and place it with the inside facing up on the sterile field.
- D. Hold the container low and pour the solution into a receptacle at the front of the sterile field.
Correct answer: B
Rationale: If a sterile field becomes wet or damp during a procedure, it is considered contaminated as moisture can allow organisms to wick from the surface and compromise the sterility of the field. It is essential to maintain the integrity of the sterile field to prevent infections and ensure patient safety.
5. An unlicensed assistive personnel (UAP) places a client in a left lateral position prior to administering a soap suds enema. Which instruction should the nurse provide the UAP?
- A. Position the client on the right side of the bed in reverse Trendelenburg.
- B. Fill the enema container with 1000 ml of warm water and 5 ml of castile soap.
- C. Reposition the client in the Sims' position.
- D. Raise the side rails on both sides of the bed and elevate the bed to waist level.
Correct answer: C
Rationale: The correct position for administering a soap suds enema is the Sims' position, not the left lateral position. The Sims' position allows the enema solution to follow the anatomical course of the intestines and provides the best overall results. By repositioning the client in the Sims' position, the weight is distributed to the anterior ilium, facilitating the enema administration process.
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