HESI LPN
Adult Health 2 Exam 1
1. What is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space?
- A. Filtration
- B. Diffusion
- C. Osmosis
- D. Active transport
Correct answer: C
Rationale: The correct answer is C: Osmosis. Osmosis is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space to maintain cellular balance. In osmosis, water moves across a semi-permeable membrane from an area of low solute concentration (hypotonic) to an area of high solute concentration (hypertonic). This process helps regulate the water content inside cells. Choices A, B, and D are incorrect. Filtration involves the movement of solutes and solvents through a membrane due to a pressure difference, diffusion is the movement of solutes from an area of high concentration to low concentration, and active transport requires energy to move substances against their concentration gradient.
2. Before administration of a stat dose of potassium chloride IV for a client with hypokalemia, what is the most important action for the nurse?
- A. Ensure the IV is flowing freely
- B. Mix the medication thoroughly
- C. Check the client’s electrolyte levels
- D. Obtain a baseline ECG
Correct answer: A
Rationale: The most crucial action for the nurse before administering a stat dose of potassium chloride IV to a client with hypokalemia is to ensure the IV is flowing freely. A freely flowing IV is essential to safely and effectively deliver potassium chloride, helping to prevent infusion-related issues. Checking the client's electrolyte levels or obtaining a baseline ECG may be important but are not the most critical actions before administering the medication. Mixing the medication thoroughly is not applicable in this scenario as potassium chloride is typically provided ready to use.
3. The wife is observed shaving her husband's beard with a safety razor. What should the nurse do?
- A. Advise the wife to shave against the hair growth
- B. Teach the wife to keep the skin loose to avoid cuts
- C. Encourage the wife to continue shaving her husband
- D. Demonstrate the correct procedure to the wife
Correct answer: C
Rationale: In this situation, the nurse should encourage the wife to continue shaving her husband. The rationale behind this is that the wife is already performing the task, so abrupt interference may lead to potential harm or emotional distress. It is crucial for the nurse to carefully observe the situation and assess for any safety concerns. While teaching proper techniques (Choice B) is important, it can be addressed later in a non-critical manner to prevent skin irritation and injury. Advising to shave against the hair growth (Choice A) may cause skin irritation and cuts. Although demonstrating the correct procedure (Choice D) may be helpful, it is essential to consider the current dynamics and respect the wife's autonomy in caring for her husband.
4. A client comes to the antepartal clinic and tells the nurse that she is 6 weeks pregnant. Which sign is she most likely to report?
- A. Decreased sexual libido
- B. Amenorrhea
- C. Quickening
- D. Nocturia
Correct answer: B
Rationale: Amenorrhea is the absence of menstrual periods and is a common early sign of pregnancy, typically reported by a client who is 6 weeks pregnant. Decreased sexual libido (Choice A) may or may not be experienced in early pregnancy, but it is not as specific as amenorrhea. Quickening (Choice C) refers to fetal movements felt by the mother, which usually occurs around 18-20 weeks of pregnancy, not at 6 weeks. Nocturia (Choice D) is waking up at night to urinate and is not typically associated with early pregnancy.
5. The nurse is assessing a client who has just received a blood transfusion. The client reports chills and back pain. What is the nurse's priority action?
- A. Slow the rate of transfusion.
- B. Administer an antipyretic.
- C. Stop the transfusion immediately.
- D. Notify the healthcare provider.
Correct answer: C
Rationale: The correct answer is C: Stop the transfusion immediately. Chills and back pain are indicative of a possible transfusion reaction, which is a critical situation. Stopping the transfusion is crucial to prevent further complications and ensure the client's safety. Slowing the rate of transfusion (Choice A) is not sufficient in this case as immediate action is required. Administering an antipyretic (Choice B) may help with fever but does not address the potential severe reaction. Notifying the healthcare provider (Choice D) can be done after stopping the transfusion, but the priority is to halt the infusion to prevent harm.
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