HESI LPN
HESI Fundamentals Exam
1. A healthcare professional is preparing to administer 750 mL of 0.9% sodium chloride IV to infuse over 7 hours. The healthcare professional should set the pump to deliver how many mL/hr?
- A. 107 mL/hr
- B. 75 mL/hr
- C. 90 mL/hr
- D. 60 mL/hr
Correct answer: A
Rationale: To calculate the mL/hr rate for the infusion, divide the total volume (750 mL) by the total time (7 hours). 750 mL รท 7 hours = 107 mL/hr. This means that the pump should be set to deliver approximately 107 mL/hr. Choice B (75 mL/hr) is incorrect because it does not reflect the correct calculation. Choice C (90 mL/hr) is incorrect as it does not align with the accurate calculation. Choice D (60 mL/hr) is incorrect as it does not match the correct mL/hr rate obtained through the calculation.
2. A nurse is preparing to administer multiple medications to a client who has an enteral feeding tube. Which of the following actions should the nurse plan to take?
- A. Dissolve each medication in 5 mL of sterile water.
- B. Draw up each medication separately in the syringe.
- C. Push the syringe plunger gently if feeling resistance.
- D. Flush the tube with 15 mL of sterile water.
Correct answer: D
Rationale: The correct action the nurse should take when administering multiple medications to a client with an enteral feeding tube is to flush the tube with 15-30 mL of sterile water before and between medications, and 30-60 mL after the last medication. This helps prevent clogging and ensures each medication is delivered effectively. Choice A is incorrect as medications should not be dissolved in water for administration through an enteral feeding tube. Choice B is incorrect because each medication should be drawn up and administered separately to prevent any potential interactions. Choice C is incorrect as resistance while pushing the plunger may indicate a problem that needs to be addressed before continuing with the administration.
3. A client has pharyngeal diphtheria. Which of the following types of transmission precautions should the nurse initiate?
- A. Droplet
- B. Contact
- C. Airborne
- D. Protective
Correct answer: A
Rationale: Pharyngeal diphtheria is transmitted via droplets, primarily through respiratory secretions. Therefore, droplet precautions are necessary to prevent the spread of the infection. Droplet precautions involve wearing a surgical mask, goggles, and a gown when within three feet of the client. Contact precautions are used for diseases transmitted by direct or indirect contact; airborne precautions are for diseases transmitted through airborne particles; protective precautions are not a standard precaution type.
4. A healthcare professional is admitting a client who has influenza. Which of the following types of transmission precautions should the healthcare professional initiate?
- A. Airborne
- B. Droplet
- C. Contact
- D. Protective environment
Correct answer: B
Rationale: Droplet precautions should be initiated for clients with infections that spread via droplet nuclei larger than 5 microns in diameter, such as influenza, rubella, meningococcal pneumonia, and streptococcal pharyngitis. In the case of influenza, the virus is primarily spread through respiratory droplets produced when an infected person coughs, sneezes, or talks. Airborne precautions are used for pathogens that remain infectious over long distances, typically smaller than 5 microns, like tuberculosis. Contact precautions are for diseases transmitted by direct or indirect contact, and protective environment precautions are for immunocompromised individuals to protect them from environmental pathogens.
5. When initiating cardiopulmonary resuscitation (CPR), what assessment finding must the healthcare provider confirm before beginning chest compressions?
- A. Absence of a pulse
- B. Presence of a pulse
- C. Respiratory rate
- D. Blood pressure
Correct answer: A
Rationale: The correct answer is A: Absence of a pulse. Prior to initiating chest compressions during CPR, it is essential to confirm the absence of a pulse. Chest compressions are indicated when there is no detectable pulse as it signifies cardiac arrest. Checking for a pulse is a critical step to ensure that CPR is performed on individuals who truly require it. Choices B, C, and D are incorrect because focusing on the presence of a pulse, respiratory rate, or blood pressure before starting chest compressions can delay life-saving interventions in a person experiencing cardiac arrest.
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