Nokea
Continuous renal replacement therapy (CRRT) differs from conventional intermittent hemodialysis in that
- A. a hemofilter is used to facilitate ultrafiltration.
- B. it provides faster removal of solute and water.
- C. it does not allow diffusion to occur.
- D. the process removes solutes and water slowly.
Correct Answer: D
Rationale: The correct answer is D because CRRT removes solutes and water slowly, which is beneficial for hemodynamically unstable patients. This slow removal allows for gradual fluid and electrolyte balance adjustments, reducing the risk of hemodynamic instability.
A: Incorrect - A hemofilter is indeed used in CRRT, but this choice does not highlight the key difference between CRRT and intermittent hemodialysis.
B: Incorrect - CRRT actually provides slower solute and water removal compared to intermittent hemodialysis.
C: Incorrect - Diffusion does occur in CRRT, as it is a key mechanism for solute removal in the process.
In summary, the key difference between CRRT and intermittent hemodialysis is the slow removal of solutes and water in CRRT, making choice D the correct answer.
You may also like to solve these questions
A nurse is caring for an elderly man recently admitted to the ICU following a stroke. She assesses his cognitive function using a new cognitive assessment test she learned about in a recent article in a nursing journal. She then brings a cup of water and a straw to the patient because she observes that his lips are dry. Later, she has the patient sit in a wheelchair and takes him to have some blood tests performed. He objects at first, saying that he can walk on his own, but the nurse explains that it is hospital policy to use the wheelchair. That evening, she recognizes signs of an imminent stroke in the patient and immediately pages the physician. Which action taken by the nurse is the best example of evidence-based practice?
- A. Giving the patient a cup of water
- B. Transferring the patient in a wheelchair
- C. Recognizing signs of imminent stroke and paging the physician
- D. Using the cognitive assessment test
Correct Answer: C
Rationale: The correct answer is C: Recognizing signs of an imminent stroke and paging the physician. This action exemplifies evidence-based practice as it involves timely identification of a critical medical condition based on clinical assessment and prompt communication with the physician for further intervention. This aligns with the principles of evidence-based practice, which emphasize the integration of best available evidence with clinical expertise and patient values.
The other choices are incorrect:
A: Giving the patient a cup of water - While providing hydration is important for patient care, it does not demonstrate evidence-based practice in this scenario.
B: Transferring the patient in a wheelchair - Although using a wheelchair may be hospital policy, it does not directly relate to evidence-based practice in this context.
D: Using the cognitive assessment test - While assessing cognitive function is essential, it does not directly address the immediate medical needs of the patient as recognizing signs of an imminent stroke does.
The nurse cares for a terminally ill patient who is experiencing pain that is continuous and severe. How should the nurse schedule the administration of opioid pain medications?
- A. Give around-the-clock routine administration of analgesics.
- B. Provide PRN doses of medication whenever the patient requests.
- C. Offer enough pain medication to keep the patient sedated.
- D. Suggest analgesic doses that provide pain control without decreasing respiratory rate.
Correct Answer: A
Rationale: The correct answer is A: Give around-the-clock routine administration of analgesics. This is the best approach for managing continuous and severe pain in a terminally ill patient. By providing scheduled doses of opioid pain medications, the nurse ensures a consistent level of pain relief, preventing peaks and troughs in pain control. This approach also helps in preventing the patient from experiencing unnecessary suffering.
Choice B (PRN doses) may lead to inadequate pain control as the patient may wait too long before requesting medication. Choice C (keeping the patient sedated) is not appropriate as the goal is pain management, not sedation. Choice D (balancing pain control and respiratory rate) is important, but the priority should be on effectively managing the pain first.
The family members of a patient who has just been admitted to the intensive care unit (ICU) with multiple traumatic injuries have just arrived in the ICU waiting room. Which action should the nurse take next?
- A. Explain ICU visitation policies and encourage family visits.
- B. Immediately take the family members to the patient’s bedside.
- C. Describe the patient’s injuries and the care that is being provided.
- D. Invite the family to participate in a multidisciplinary care conference.
Correct Answer: A
Rationale: The correct answer is A: Explain ICU visitation policies and encourage family visits. This is the best course of action because it prioritizes the needs of the family members by providing them with information on visitation policies and encouraging them to visit the patient. This helps establish communication, support, and involvement in the patient's care. It also respects the family's emotional needs during a challenging time.
Choices B, C, and D are incorrect:
B: Immediately taking the family members to the patient's bedside may overwhelm them and disrupt the patient's care.
C: Describing the patient's injuries and care being provided should be done in a more controlled environment to ensure the family's understanding and emotional readiness.
D: Inviting the family to a multidisciplinary care conference may be premature without first addressing their immediate concerns and providing support.
The nurse educator is evaluating the performance of a new registered nurse (RN) who is providing care to a patient who is receiving mechanical ventilation with 15 cm H2O of peak end-expiratory pressure (PEEP). Which action indicates that the new RN is safe?
- A. The RN plans to suction the patient every 1 to 2 hours.
- B. The RN uses a closed-suction technique to suction the patient.
- C. The RN tapes the connection between the ventilator tubing and the ET.
- D. The RN changes the ventilator circuit tubing routinely every 48 hours.
Correct Answer: B
Rationale: The correct answer is B: The RN uses a closed-suction technique to suction the patient. This is the safe action because closed-suction technique minimizes the risk of ventilator-associated infections by maintaining a closed system during suctioning, reducing the exposure to pathogens. Closed-suction systems also help maintain lung compliance and oxygenation levels during the suctioning process.
Rationale: Option A is incorrect because suctioning every 1 to 2 hours may be too frequent and can lead to hypoxia and mucosal damage. Option C is incorrect as taping the connection between the ventilator tubing and ET can interfere with the proper functioning of the ventilator and increase the risk of disconnection. Option D is incorrect because changing ventilator circuit tubing routinely every 48 hours is not evidence-based practice and can increase the risk of contamination and unnecessary costs.
A client who has active tuberculosis (TB) is admitted to the medical unit. What action is most important for the nurse to implement?
- A. Fit the client with a respirator mask.
- B. Assign the client to a negative air-flow room.
- C. Don a clean gown for client care.
- D. Place an isolation cart in the hallway.
Correct Answer: B
Rationale: The correct answer is B: Assign the client to a negative air-flow room. This is crucial to prevent the spread of TB to other patients and healthcare workers. Negative air-flow rooms help contain airborne pathogens. Option A is not sufficient as it only protects the client, not others. Option C is important for infection control but not the priority in this situation. Option D is not as effective as placing the client in a negative air-flow room. Overall, option B is the best choice to ensure the safety of everyone in the unit.