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Which of the following devices is best suited to deliver 65 % oxygen to a patient who is spontaneously breathing?
- A. Face mask with non-rebreathing reservoir
- B. Low-flow nasal cannula
- C. Simple face mask
- D. Venturi mask
Correct Answer: D
Rationale: The Venturi mask is the best choice for delivering 65% oxygen because it allows precise oxygen concentration delivery through adjustable venturi valves. This device ensures consistent oxygen levels even during variations in patient breathing patterns. Face mask with non-rebreathing reservoir (A) delivers higher oxygen concentrations, low-flow nasal cannula (B) is not suitable for precise oxygen delivery, and simple face mask (C) may not provide the desired oxygen concentration.
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The removal of plasma water and some low–molecular weight particles by using a pressure or osmotic gradient is known as
- A. dialysis.
- B. diffusion.
- C. clearance.
- D. ultrafiltration.
Correct Answer: D
Rationale: Ultrafiltration is the correct answer because it involves the removal of plasma water and low-molecular weight particles by using a pressure or osmotic gradient. During ultrafiltration, the pressure gradient pushes the fluid through a semipermeable membrane, separating the substances based on their molecular size. This process allows for the selective removal of unwanted substances while retaining essential components. Dialysis (choice A) involves the removal of waste products from the blood, but it does not specifically target plasma water and low-molecular weight particles. Diffusion (choice B) is the passive movement of particles from an area of higher concentration to an area of lower concentration and is not specific to the removal of plasma water. Clearance (choice C) refers to the rate at which a substance is removed from the blood and does not involve the mechanism of pressure or osmotic gradient utilized in ultrafiltration.
When providing palliative care, the nurse must keep in mind that the family may include which of the following? (Select all that apply.)
- A. Unmarried life partners of same sex
- B. Unmarried life partners of opposite sex
- C. Roommates
- D. Close friends
Correct Answer: A
Rationale: The correct answer is A: Unmarried life partners of same sex. When providing palliative care, it's crucial to recognize and respect diverse family structures. Unmarried life partners of the same sex may form a significant familial bond, requiring support and involvement in care decisions. This choice aligns with the principles of inclusivity and non-discrimination in palliative care.
Incorrect choices:
B: Unmarried life partners of the opposite sex - This choice is incorrect as it limits the definition of family to only opposite-sex partners, excluding same-sex couples.
C: Roommates - While roommates may provide support, they do not necessarily have the same level of emotional and decision-making involvement as family members or life partners.
D: Close friends - While close friends can be important sources of support, they do not necessarily have the same legal or emotional ties as a life partner.
A patient in hospice care is experiencing dyspnea. What is the most appropriate nursing intervention?
- A. Position the patient flat on their back.
- B. Administer oxygen as prescribed.
- C. Restrict fluid intake to reduce congestion.
- D. Perform chest physiotherapy to improve breathing.
Correct Answer: B
Rationale: The correct answer is B: Administer oxygen as prescribed. Dyspnea in a hospice patient often indicates respiratory distress, and administering oxygen can help improve oxygenation and alleviate breathing difficulty. Positioning the patient flat on their back (A) may worsen dyspnea due to increased pressure on the diaphragm. Restricting fluid intake (C) is not appropriate as dehydration can exacerbate respiratory distress. Chest physiotherapy (D) may not be suitable for a hospice patient experiencing dyspnea as it can be physically taxing and may not address the underlying cause effectively.
The nurse is caring for a mechanically ventilated patient. T he primary care providers are considering performing a tracheostomy because the patienatb iirsb .hcoamv/itensgt difficulty weaning from mechanical ventilation. Related to tracheostomy, the nurse understands which of the following?
- A. Patient outcomes are better if the tracheostomy is done within a week of intubation.
- B. Percutaneous tracheostomy can be done safely at the b edside by the respiratory therapist.
- C. Procedures performed in the operating room are associaabtirebd.c owmi/ttehs tf ewer complications.
- D. The greatest risk after a percutaneous tracheostomy is accidental decannulation.
Correct Answer: C
Rationale: The correct answer is C: Procedures performed in the operating room are associated with fewer complications. This is because performing a tracheostomy in the operating room allows for better control of the environment, equipment, and expertise of the surgical team. In this setting, the risk of complications such as bleeding, infection, and injury to surrounding structures is minimized.
Choices A, B, and D are incorrect:
A: Patient outcomes are better if the tracheostomy is done within a week of intubation - This statement is not universally true and depends on individual patient factors. Timing of tracheostomy should be based on the patient's clinical condition and not a set timeline.
B: Percutaneous tracheostomy can be done safely at the bedside by the respiratory therapist - While percutaneous tracheostomy can be performed at the bedside, it is typically done by a trained physician or surgeon due to the potential risks and complications involved.
D: The greatest risk after a per
The charge nurse has a Vigileo pulse contour cardiac output monitoring system available for use in the surgical intensive care unit. For which patient isa buisrbe.c oomf /ttehsits device most appropriate?
- A. A patient with a history of aortic insufficiency admitte d with a postoperative myocardial infarction
- B. A mechanically ventilated patient with cardiogenic sho ck being treated with an intraaortic balloon pump
- C. A patient with a history of atrial fibrillation having frequent episodes of paroxysmal supraventricular tachycardia
- D. A mechanically ventilated patient admitted following repair of an acute bowel obstruction
Correct Answer: B
Rationale: The correct answer is B because a mechanically ventilated patient with cardiogenic shock being treated with an intra-aortic balloon pump would benefit most from having a Vigileo pulse contour cardiac output monitoring system. This device provides continuous cardiac output monitoring and can help guide hemodynamic management in critically ill patients, especially those with hemodynamic instability like cardiogenic shock. It allows for real-time adjustments of fluid and vasoactive medications to optimize cardiac output and tissue perfusion.
Choice A is incorrect because a patient with a history of aortic insufficiency and postoperative myocardial infarction may not require continuous cardiac output monitoring like the patient in choice B. Choice C is incorrect as the patient with atrial fibrillation and paroxysmal supraventricular tachycardia does not necessarily need cardiac output monitoring. Choice D is also incorrect as a mechanically ventilated patient following repair of an acute bowel obstruction may not require continuous cardiac output monitoring unless there are specific complications.