Correct Answer: B

Rationale: The correct answer is B because asking the patient to share his or her internal dialogue can provide direct insight into the patient's thoughts and feelings, allowing the nurse to address specific anxieties. This approach promotes open communication and understanding. Choice A focuses on providing information but may not directly address the patient's feelings. Choice C is unrelated to addressing the patient's anxiety. Choice D addresses pain control, which is important but not directly related to exploring the patient's emotions. Therefore, option B is the most effective strategy for gaining insight into the patient's feelings in this scenario.

Correct Answer: C

Rationale: The correct answer is C: Dobutamine infusion. In this scenario, the patient is experiencing hypovolemic shock due to significant blood loss, resulting in low blood pressure, tachycardia, and low cardiac output. Dobutamine is a positive inotropic agent that increases cardiac contractility and output, helping to improve tissue perfusion. Blood transfusion (A) is a common intervention for hypovolemic shock, but in this case, the patient's hematocrit is low, indicating dilutional anemia rather than acute blood loss, so addressing the cardiac output is more urgent. Furosemide (B) is a diuretic that would exacerbate the hypovolemia and worsen the patient's condition. Dopamine (D) is a vasopressor that primarily increases blood pressure, but in this case, the patient's low cardiac output is the main concern, making dobutamine a more appropriate choice.

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: Rationale: 1. Intermittent Mandatory Ventilation (IMV) allows the patient to breathe spontaneously between the preset mechanical breaths. 2. It provides a set number of breaths per minute while allowing the patient to initiate additional breaths at their own tidal volume. 3. IMV is a partial ventilatory support mode, providing a balance between controlled and spontaneous breathing. 4. Assist/Control Ventilation (A) provides full support with every breath initiated by the patient or the ventilator. 5. Controlled Ventilation (B) does not allow for spontaneous breaths by the patient. 6. Positive End-Expiratory Pressure (D) is a separate mode focusing on maintaining positive pressure at the end of expiration, not providing breaths.

Correct Answer: D

Rationale: The correct answer is D: Instill 5 mL of sterile saline into the ET before suctioning. This intervention helps to loosen and mobilize the thick secretions, making them easier to remove during suctioning. It is important to moisten the secretions to prevent mucosal damage and trauma during suctioning. A: Increasing suctioning frequency can lead to mucosal damage and increased risk of infection. B: Repositioning helps with ventilation and preventing pressure injuries, but it does not directly address the thick secretions. C: Adding water to enteral feedings will not directly address the thick secretions in the ET. In summary, instilling sterile saline into the ET before suctioning is the most effective intervention as it helps to loosen and mobilize thick secretions, making suctioning more effective and reducing the risk of mucosal damage.