In assessing a patient, the nurse understands that what sym ptomology is an early sign of hypoxemia?

Correct Answer: D

Rationale: Step 1: Restlessness is an early sign of hypoxemia due to the body's response to low oxygen levels. Step 2: Restlessness occurs as the body tries to increase oxygen intake. Step 3: Other choices are incorrect because clubbing and cyanosis are late signs, while hypotension is not a specific early sign of hypoxemia.

Correct Answer: E

Rationale: Step 1: The scenario describes a decision made based on the patient's previously expressed wishes. Step 2: The decision aligns with the principle of respecting patient autonomy. Step 3: The term that best describes this situation is "Advance Directive." Summary: - A: Incorrect, as it involves actively ending the patient's life without their consent. - B: Incorrect, as euthanasia involves intentionally causing death to relieve suffering. - C: Incorrect, as palliative care focuses on improving quality of life for the patient. - D: Incorrect, as withdrawal of life support involves discontinuing medical interventions, not honoring the patient's wishes.

Correct Answer: B

Rationale: The correct answer is B: “This injection is being given to prevent blood clots from forming.” Enoxaparin is an anticoagulant used to prevent blood clots. It is administered through injection, not orally (A). Enoxaparin does not dissolve existing blood clots (C). Contacting the primary care provider to discuss the medication is not necessary in this scenario (D). The correct choice emphasizes the purpose of enoxaparin in preventing new blood clots.

Correct Answer: B

Rationale: The correct answer is B: Hypoventilation. A PaCO2 of 48 mm Hg indicates an elevated level of carbon dioxide in the blood, which is typically seen in hypoventilation where the lungs are not effectively removing CO2. Hypoventilation leads to respiratory acidosis. Option A is incorrect because hyperventilation would decrease PaCO2 levels. Option C is incorrect as it does not directly relate to PaCO2 levels. Option D is incorrect as increased excretion of HCO3- would not directly affect PaCO2 levels.

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.

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.

Correct Answer: D

Rationale: The correct answer is D: Increased confidence in making decisions. Obtaining certification in critical care nursing would likely enhance the nurse's knowledge and skills, leading to increased confidence in making clinical decisions. This confidence would stem from the rigorous training and education required to achieve certification, as well as the validation of her expertise in critical care nursing. With increased confidence, the nurse would be more self-assured in her abilities, leading to improved patient care outcomes. Choice A: Recognition by peers is not the most important effect because while recognition is a positive outcome, it may not directly impact the nurse's ability to provide better patient care. Choice B: Increase in salary and rank is not the most important effect because while financial benefits are important, the primary focus of obtaining certification should be on improving competence and patient care. Choice C: More flexibility in seeking employment is not the most important effect because while certification may open up more job opportunities, the main benefit should be on enhancing the nurse's skills and confidence in providing quality

Correct Answer: C

Rationale: Rationale: 1. Culture and religious beliefs can significantly impact end-of-life decision making by influencing values, beliefs, and preferences. 2. These factors may affect choices related to treatment options, quality of life, and spiritual aspects. 3. Different cultural backgrounds may lead to varying perspectives on autonomy, family involvement, and medical interventions. 4. Option A and B make generalizations based on race, which is not accurate as preferences can vary widely within any racial group. 5. Option D is incorrect as perspectives on end-of-life care can vary even within the same religious group due to individual beliefs and interpretations.

Correct Answer: B

Rationale: Step 1: Start with Background - statement B provides relevant background information about the patient's current condition and why there is a need for communication. Step 2: Move on to Situation - statement D sets the current situation where the nurse expresses concern about the patient's symptom. Step 3: Next is Assessment - statement C details the nurse's assessment findings, highlighting the critical aspects of the patient's condition. Step 4: End with Recommendation - statement A suggests the necessary action to be taken based on the assessment findings. This order ensures a clear and structured communication process. Summary: - Choice A is incorrect as the recommendation should come after providing background, situation, and assessment. - Choice C is incorrect as assessment details should precede the patient's critical condition. - Choice D is incorrect as the situation should be explained before expressing concern.