Nokea
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.
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The nurse plans to evaluate the effectiveness of several drugs administered by different routes. Arrange the routes of administration from fastest to slowest rate of absorption. 1. Intravenous 2. Sublingual 3. Intramuscular 4. Subcutaneous
- A. 1,2,3,4
- B. 4,3,2,1
- C. 2,4,3,1
- D. 3,4,1,2
Correct Answer: A
Rationale: The correct order of routes of administration from fastest to slowest rate of absorption is 1. Intravenous, 2. Sublingual, 3. Intramuscular, 4. Subcutaneous. Intravenous administration provides the fastest absorption as the drug is directly injected into the bloodstream. Sublingual administration allows for rapid absorption through the mucous membranes under the tongue. Intramuscular administration has a slower absorption rate as the drug is injected into the muscle tissue. Subcutaneous administration is the slowest as the drug is injected into the fatty tissue under the skin, leading to a slower absorption compared to the other routes.
The nurse is caring for a postoperative client who is reluctant to ambulate. What strategy should the nurse use to encourage the client?
- A. Explain the benefits of ambulation for recovery
- B. Wait for the client to request to walk
- C. Tell the client that walking is necessary for discharge
- D. Offer pain medication before walking
Correct Answer: A
Rationale: Corrected Rationale: The correct strategy for the nurse to encourage the postoperative client to ambulate is to explain the benefits of ambulation for recovery. Educating the client on how ambulation aids in preventing complications and promotes faster recovery can motivate their participation. Choice B is incorrect because waiting for the client to request to walk may lead to delays in mobilization. Choice C is incorrect as it may induce unnecessary fear in the client. Choice D is incorrect as offering pain medication before walking does not address the client's reluctance to ambulate.
A nurse is developing a care plan for a client with chronic pain. What interventions should be included to help manage pain?
- A. Administer pain medication around the clock
- B. Teach relaxation techniques
- C. Encourage physical activity
- D. All of the above
Correct Answer: D
Rationale: In managing chronic pain, it is essential to employ a multi-faceted approach. Administering pain medication around the clock helps maintain consistent pain relief. Teaching relaxation techniques such as deep breathing or guided imagery can help reduce muscle tension and promote relaxation, which can alleviate pain. Encouraging physical activity, tailored to the client's abilities, can help improve overall physical functioning and reduce pain perception. Therefore, combining all these interventions (pain medication, relaxation techniques, and physical activity) provides a comprehensive approach to pain management, addressing different aspects of the client's experience with chronic pain. This holistic approach is more effective than using a single intervention alone, making 'All of the above' the correct choice.
A client is prescribed warfarin (Coumadin) for atrial fibrillation. Which dietary instruction should the nurse provide?
- A. Increase intake of green leafy vegetables
- B. Avoid foods high in vitamin K
- C. Increase intake of foods rich in vitamin C
- D. Limit intake of dairy products
Correct Answer: B
Rationale: The correct answer is B: 'Avoid foods high in vitamin K.' Vitamin K can decrease the effectiveness of warfarin, so it is essential for clients on warfarin therapy to avoid foods high in vitamin K. Green leafy vegetables are high in vitamin K, so choice A is incorrect. Choices C and D are unrelated to the dietary restrictions needed for clients taking warfarin and are therefore incorrect.
The nurse is caring for a client with an indwelling urinary catheter. What is the most important action to prevent catheter-associated urinary tract infections (CAUTI)?
- A. Perform hand hygiene before and after handling the catheter
- B. Change the catheter every 72 hours
- C. Apply antibiotic ointment at the insertion site
- D. Irrigate the catheter daily
Correct Answer: A
Rationale: Performing hand hygiene before and after handling the catheter is crucial in preventing catheter-associated urinary tract infections (CAUTI). This practice helps minimize the risk of introducing harmful microorganisms into the urinary tract. Changing the catheter every 72 hours is not recommended unless clinically indicated as it can increase the risk of infection. Applying antibiotic ointment at the insertion site is not a standard practice and may contribute to antibiotic resistance. Irrigating the catheter daily is unnecessary and can introduce pathogens into the urinary tract, increasing the risk of infection.