Critical Care Nursing Questions and Answers PDF

Correct Answer: A

Rationale: The correct answer is A: Drain condensate from the ventilator tubing away from the patient. This is crucial to prevent ventilator-associated pneumonia as stagnant condensate can harbor harmful bacteria. By draining it away from the patient, the risk of bacterial growth and subsequent aspiration is minimized. Elevating the head of the bed (choice B) helps prevent aspiration but is not specific to preventing ventilator-associated pneumonia. Instilling normal saline during suctioning (choice C) can increase the risk of infection. Performing regular oral care with chlorhexidine (choice D) is important for oral hygiene but not directly related to preventing ventilator-associated pneumonia.

Correct Answer: B

Rationale: The correct answer is B: fluid replacement with 0.45% saline. The patient's low blood pressure, tachycardia, and lack of urine output indicate hypovolemia. Fluid replacement with saline will help restore circulating volume, improve blood pressure, and support renal perfusion. A: Blood transfusion is not indicated as the primary issue is hypovolemia, not anemia. C: Inotropic agents are used to increase cardiac contractility but are not the initial treatment for hypovolemia. D: Antiemetics may help with symptoms but do not address the underlying issue of fluid loss and hypovolemia.

Correct Answer: B

Rationale: Step-by-step rationale for why choice B is correct: 1. Midazolam is a benzodiazepine used for sedation and anxiolysis. 2. It acts quickly and has a short duration of action, suitable for acute agitation. 3. Lorazepam (also a benzodiazepine) is in the same drug class, ensuring compatibility. 4. Lorazepam is specifically ordered for this patient, indicating its appropriateness. 5. Administering midazolam addresses the patient's agitation efficiently and safely. Summary of why other choices are incorrect: A: Fentanyl is an opioid analgesic, not ideal for managing agitation. C: Increasing morphine infusion can exacerbate sedation or respiratory depression. D: Paralytic agents are used for neuromuscular blockade, not agitation control.

Correct Answer: D

Rationale: The correct answer is D: The sister needs to maintain her own health during this time. It is essential for the sister to take care of her own health and well-being to be able to provide the best support to the patient. Continuous stress and lack of rest can negatively impact her ability to support the patient effectively. Encouraging her to rest will ensure she remains physically and mentally well to continue supporting the patient in the long run. Incorrect Choices: A: The sister is in the way of the health care providers - This is incorrect as the primary concern is the well-being of the sister and her ability to provide support. B: The patient may become annoyed by her continual presence - This is not the main reason for suggesting the sister to rest, as the focus is on her own health. C: The patient will recover more easily in peace and quiet - While peace and quiet can be beneficial for the patient, the main focus here is on the sister's well-being.

Correct Answer: D

Rationale: The correct answer is D: Work of breathing. Work of breathing refers to the amount of effort required to maintain a specific level of ventilation. This includes the energy needed for inhalation and exhalation. Compliance (A) refers to the ease with which the lungs expand, resistance (B) is the opposition to airflow in the airways, and tidal volume (C) is the amount of air moved in and out of the lungs during normal breathing. Work of breathing encompasses the overall energy expenditure involved in the breathing process, making it the most appropriate term in this context.