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: B

Rationale: The correct answer is B (80 to 125 mL/min) because this range reflects the normal glomerular filtration rate (GFR) in adults. GFR measures the rate at which blood is filtered by the kidneys, typically around 125 mL/min. A GFR below 60 mL/min indicates kidney dysfunction, making option A incorrect. Option C (125 to 180 mL/min) is above the normal range. Option D (more than 189 mL/min) is too high and could indicate hyperfiltration, common in conditions like diabetes. Therefore, choice B is the most appropriate within the normal GFR range.

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: A

Rationale: Step 1: Families benefit by witnessing that everything possible was done during resuscitation and invasive procedures. Step 2: This reassures families that healthcare providers are doing their best to save the patient. Step 3: It can provide closure and comfort to families knowing that all efforts were made. Step 4: This transparency can also help in the grieving process for families. Summary: Choice A is correct because it highlights the emotional and psychological benefits for families. Choices B, C, and D are incorrect as they do not align with the positive impacts of allowing family presence during resuscitation and invasive procedures.

Correct Answer: D

Rationale: The correct answer is D, Metoprolol tartrate (Lopressor). Metoprolol is a cardioselective beta-blocker that primarily targets beta-1 receptors in the heart, making it less likely to exacerbate asthma compared to non-selective beta-blockers like Propranolol (choice B) and Pindolol (choice C). Carteolol (choice A) is also a non-selective beta-blocker and can potentially worsen asthma symptoms. Metoprolol's selectivity for beta-1 receptors minimizes bronchoconstriction, making it the safest choice for a client with asthma and high blood pressure.

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: The correct answer is B: Discontinue the catheter and culture the tip. The patient's symptoms indicate a possible catheter-related infection. Discontinuing the catheter will prevent further infection spread. Culturing the tip will identify the specific pathogen causing the infection, guiding appropriate antibiotic therapy. Choice A is incorrect because giving analgesics alone will not address the underlying infection. Choice C is incorrect as changing the flush system is not a priority when infection is suspected. Choice D is incorrect as checking the site more frequently does not address the need for immediate action to address the infection.

Correct Answer: C

Rationale: The correct answer is C: Considers factors related to safe patient care. The scenario involves the nurse discussing the patient's living will with the physician, which is essential for ensuring safe patient care by following the patient's preferences. This aligns with the AACN standard of considering factors related to safe patient care, as the nurse is actively involving all relevant parties in decision-making to provide care that is in line with the patient's wishes. Explanation of why other choices are incorrect: A: Acquires and maintains current knowledge of practice - While important, this choice does not directly relate to the scenario where the focus is on safe patient care through communication and collaboration. B: Acts ethically on behalf of the patient and family - While ethics are important, the scenario is more about following the patient's wishes as outlined in the living will rather than making ethical decisions. D: Uses clinical inquiry and integrates research findings in practice - While valuable in nursing practice, this choice does not directly apply to the scenario where