Correct Answer: A

Rationale: The correct answer is A: Restlessness. Restlessness is a common behavioral indicator of anxiety in patients. In this scenario, a patient who is orally intubated and on a ventilator may not be able to verbally express anxiety, making restlessness a more prominent sign. Verbalization may not be possible due to intubation. While increased respiratory rate can be a symptom of anxiety, it is also a common physiological response in patients on mechanical ventilation. A Glasgow Coma Scale score of 3 indicates severe impairment of consciousness, not specifically anxiety.

Correct Answer: B

Rationale: The correct answer is B: Disconnect the flush system from the arterial line catheter. This action is necessary to prevent air from entering the patient's bloodstream, which can lead to air embolism. By disconnecting the flush system, the nurse stops the flow of air and ensures patient safety. Checking the inflation volume of the pressurized bag (A) is not the immediate concern in this situation. Zero referencing the transducer system (C) is unrelated to the issue of air entering the arterial line. Reducing the number of stopcocks in the flush system tubing (D) does not address the immediate risk of air embolism.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. Involving the family in patient care is crucial for holistic care. 2. Assessing family relationships helps identify support systems and potential conflicts. 3. Understanding family dynamics aids in creating a comprehensive care plan. 4. Family involvement can enhance patient outcomes and satisfaction. Summary of incorrect choices: B. Irrelevant, as the focus is on patient-centered care, not just fulfilling an assessment tool. C. Personal curiosity is not a valid reason for assessing family relationships in healthcare. D. Conducting research on family patterns does not directly impact the immediate care of the patient.

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: C

Rationale: The correct interpretation is C: Normal ABG values. 1. pH is within the normal range of 7.35-7.45. 2. PaCO2 is 40 mm Hg, within the normal range of 35-45 mm Hg. 3. Bicarbonate is 24 mEq/L, within the normal range of 22-26 mEq/L. 4. PaO2 is 95 mm Hg, within the normal range of 80-100 mm Hg. 5. Oxygen saturation is 97%, which is normal. 6. Respirations are also within the normal range at 20 breaths per minute. Overall, all values fall within the normal range, indicating a well-maintained acid-base balance. Other choices are incorrect because there are no abnormalities that would suggest compensated metabolic acidosis, metabolic alkalosis, or respiratory acidosis based on the given ABG values.