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Slow continuous ultrafiltration is also known as isolated ultrafiltration and is used to
- A. remove plasma water in cases of volume overload.
- B. remove fluids and solutes through the process of convection.
- C. remove plasma water and solutes by adding dialysate.
- D. combine ultrafiltration, convection, and dialysis.
Correct Answer: A
Rationale: The correct answer is A because slow continuous ultrafiltration removes excess plasma water in cases of volume overload by applying a pressure gradient across a semipermeable membrane. This process helps to achieve fluid balance without removing solutes.
Choice B is incorrect because convection is not the primary mechanism of slow continuous ultrafiltration.
Choice C is incorrect as dialysate is not added in slow continuous ultrafiltration.
Choice D is incorrect as slow continuous ultrafiltration does not combine all three processes of ultrafiltration, convection, and dialysis.
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The nurse assesses a patient who is admitted for an overdo se of sedatives. The nurse expects to find which acid-base alteration?
- A. Hyperventilation and respiratory acidosis
- B. Hypoventilation and respiratory acidosis
- C. Hypoventilation and respiratory alkalosis
- D. Respiratory acidosis and normal oxygen levels
Correct Answer: B
Rationale: The correct answer is B: Hypoventilation and respiratory acidosis. When a patient overdoses on sedatives, it can lead to respiratory depression causing hypoventilation. Hypoventilation results in retention of CO2, leading to respiratory acidosis. This is because the body is not effectively exhaling CO2, causing an increase in carbonic acid levels and a decrease in blood pH. The other choices are incorrect because hyperventilation would lead to respiratory alkalosis (Choice A), hypoventilation does not cause respiratory alkalosis (Choice C), and normal oxygen levels do not indicate the acid-base imbalance caused by sedative overdose (Choice D).
The nurse caring for a critically ill patient implements several components of care. What component is an example of the use of evidence-based practice?
- A. Use of a protocol for admission of a patient to the unit
- B. Application of an insulin sliding scale method from research
- C. Checking the patients armband before giving a medication
- D. Limiting visits to immediate family only for 2 hours a day
Correct Answer: B
Rationale: The correct answer is B because applying an insulin sliding scale method based on research is an example of evidence-based practice. This method is derived from scientific evidence and research studies, ensuring the best outcomes for the patient. The other choices lack the same level of evidence-based rationale: A is based on a protocol, which may not be evidence-based; C is a standard safety practice, not necessarily evidence-based; D is a decision based on hospital policy or practicality, not specifically evidence-based.
A critically ill patient tells the nurse that he is not afraid to die because he believes in reincarnation. What is the most appropriate nursing response?
- A. What if reincarnation is not real?
- B. This belief gives you strength.
- C. I dont believe in reincarnation.
- D. You shouldnt base your hopes on such a belief.
Correct Answer: B
Rationale: The correct answer is B because it acknowledges and validates the patient's belief, showing empathy and support. By stating that the belief gives strength, the nurse facilitates a therapeutic relationship and promotes the patient's emotional well-being. Choice A is incorrect as it challenges the patient's belief system, potentially creating conflict. Choice C is inappropriate as it dismisses the patient's belief and could damage the nurse-patient relationship. Choice D is also incorrect as it invalidates the patient's belief and could harm trust and rapport.
To maintain proper cuff pressure of an endotracheal tube (ET) when the patient is on mechanical ventilation, the nurse should:
- A. Inflate the cuff with a minimum of 10 mL of air.
- B. Inflate the cuff until the pilot balloon is firm on palpation.
- C. Inject air into the cuff until a manometer shows 15 mm Hg pressure.
- D. Inject air into the cuff until a slight leak is heard only at peak inflation.
Correct Answer: D
Rationale: The correct answer is D because inflating the cuff until a slight leak is heard only at peak inflation ensures it is adequately sealed but not overinflated, preventing complications like tracheal injury or pressure necrosis. Choice A lacks specificity and can lead to overinflation. Choice B may result in overinflation as the firmness of the balloon is subjective. Choice C relies on a specific pressure reading, which may vary based on factors like tube size and patient anatomy, potentially leading to under- or overinflation.
The critical care environment is often stressful to a criticalalbyir bil.clo pma/tteiset nt. Identify stressors that are commonly stressful for the critically ill patient. (Select all that apply.)
- A. Alarms that sound from various devices
- B. Bright, fluorescent lighting
- C. Lack of day-night cues
- D. Sounds from the mechanical ventilator
Correct Answer: A
Rationale: The correct answer is A: Alarms that sound from various devices. In the critical care environment, alarms often indicate changes in the patient's condition, causing stress. Bright fluorescent lighting (B) may be bothersome but not directly related to patient stress. Lack of day-night cues (C) may disrupt sleep patterns but is not a direct stressor. Sounds from the mechanical ventilator (D) are essential for patient care and not inherently stressful.