HESI LPN
Fundamentals HESI
1. A client with an NG tube is receiving intermittent feedings through an open system. Which of the following actions should the nurse take first?
- A. Rinse the feeding bag with water between feedings
- B. Tell the client to keep the head of the bed elevated at least 30°
- C. Make sure the enteral formula is at room temperature
- D. Wipe the top of the formula can with alcohol
Correct answer: B
Rationale: The correct answer is to tell the client to keep the head of the bed elevated at least 30°. Elevating the head of the bed prevents aspiration of the enteral formula, which is a priority in caring for a client with an NG tube. This action helps in reducing the risk of complications such as pneumonia. Choices A, C, and D are incorrect. While rinsing the feeding bag, ensuring the enteral formula temperature, and maintaining cleanliness are important aspects of enteral feeding care, the priority is to prevent aspiration by keeping the head of the bed elevated. These actions can be implemented after ensuring the client's safety by maintaining the correct bed position.
2. A healthcare provider is assessing a client with a diagnosis of acute pancreatitis. Which laboratory value would be most concerning?
- A. Serum amylase of 200 U/L
- B. Serum lipase of 250 U/L
- C. Blood glucose of 200 mg/dL
- D. Serum calcium of 7.5 mg/dL
Correct answer: D
Rationale: In acute pancreatitis, hypocalcemia (low serum calcium) is a critical finding that is associated with a poor prognosis and requires immediate attention. Serum amylase and lipase are typically elevated in acute pancreatitis due to pancreatic inflammation, but they are not indicators of severity. Blood glucose levels may be elevated due to stress or underlying conditions but are not directly related to the severity of acute pancreatitis. Therefore, the most concerning value in this scenario is the low serum calcium level, which can have significant implications for the client's prognosis.
3. 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.
4. A client with diabetes mellitus is learning to self-administer insulin. Which action by the client indicates the need for further teaching?
- A. The client rotates injection sites on the abdomen.
- B. The client draws up the insulin dose after warming the vial to room temperature.
- C. The client pinches the skin before injecting the insulin.
- D. The client injects the insulin at a 90-degree angle.
Correct answer: B
Rationale: Drawing up insulin after warming the vial to room temperature indicates a need for further teaching, as insulin should be at room temperature for administration. Choice A is correct as rotating injection sites helps prevent lipodystrophy. Choice C is correct as pinching the skin helps ensure proper subcutaneous injection. Choice D is correct as injecting insulin at a 90-degree angle is the recommended technique for subcutaneous injections.
5. A healthcare professional is preparing to administer lactated Ringer's (LR) IV 100 mL over 15 min. How many mL/hr should the IV infusion pump be set to deliver? (Round the answer to the nearest whole number. Do not use a trailing zero.)
- A. 400 mL/hr
- B. 200 mL/hr
- C. 300 mL/hr
- D. 250 mL/hr
Correct answer: A
Rationale: To administer 100 mL over 15 min, the IV pump should be set to deliver 400 mL/hr. This calculation is based on the concept that if 100 mL is given in 15 minutes, to find out how many milliliters are given in an hour, you would multiply by 4 (since 15 minutes is a quarter of an hour). Therefore, 100 mL x 4 = 400 mL per hour. Choices B, C, and D are incorrect as they do not reflect the correct calculation for the infusion rate required to administer 100 mL over 15 minutes.
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