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: C

Rationale: The correct answer is C: Collaboration with patients, families, and team members. By addressing the family's concern about lack of communication with the physician and arranging a meeting between the intensivist and the family, the nurse is demonstrating collaboration skills in facilitating communication and ensuring the family's questions are addressed. This competency emphasizes the importance of working together with patients, families, and the healthcare team to provide optimal care. Incorrect choices: A: Advocacy and moral agency in solving ethical issues - While advocacy is important in nursing, in this scenario, the focus is on communication and collaboration rather than ethical issues. B: Clinical judgment and clinical reasoning skills - Although these skills are crucial in critical care nursing, the situation described does not primarily involve clinical judgment but rather communication and collaboration. D: Facilitation of learning for patients, families, and team members - While patient education is important, the main focus of the scenario is on addressing the family's concerns and facilitating communication, rather than educational aspects.

Correct Answer: C

Rationale: Step-by-step rationale for choice C: 1. Advance directives should be made by the patient to reflect their wishes. 2. Developing it before illness ensures clarity and avoids confusion. 3. Patients may not be able to make informed decisions in critical conditions. 4. Family or surrogates may not accurately represent the patient's wishes. Summary: A - Family in critical condition may not know the patient's wishes. B - Hospital admission process may be too late for clear decision-making. D - Healthcare surrogate may not fully understand the patient's preferences.

Correct Answer: B

Rationale: The correct answer is B because assessing the hemofilter every 6 hours for clotting is essential in ensuring the effectiveness of CRRT. Clotting can obstruct blood flow, leading to treatment inefficiency and potential harm to the patient. This step helps the nurse to promptly address any clotting issues and prevent complications. A: Assessing that the blood tubing is warm to the touch is not a standard practice for monitoring CRRT and does not provide relevant information about the treatment's effectiveness. C: Covering the dialysis lines to protect them from light is not a priority in monitoring CRRT. Light exposure is not a common concern in this context. D: Using clean technique during vascular access dressing changes is important for infection prevention but is not directly related to monitoring the effectiveness of CRRT.

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.