Critical Care Nursing Practice Questions

Correct Answer: C

Rationale: The correct answer is C: Damage to the type II pneumocytes, which produce surfactant. Acute respiratory distress syndrome (ARDS) is characterized by damage to the alveolar epithelium, including type II pneumocytes responsible for producing surfactant. Surfactant reduces surface tension in the alveoli, preventing collapse. Damage to type II pneumocytes impairs surfactant production, leading to alveolar collapse and impaired gas exchange. Choices A, B, and D are incorrect because ARDS is not primarily caused by a decrease in white blood cells, damage to the right mainstem bronchus, or decreased capillary permeability.

Correct Answer: D

Rationale: The correct answer is D because monitoring the surgical incision for signs of infection is essential post-VAD implantation to prevent complications. This step is crucial in early identification and treatment of any potential infection, which can lead to serious outcomes. A) Giving immunosuppressive medications is not typically required for VAD implantation, as the primary goal is to support cardiac function rather than prevent rejection. B) Preparing the patient for a permanent VAD is premature, as the goal is often to bridge to transplantation or recovery, not permanent VAD placement. C) Teaching the patient the reason for complete bed rest is not necessary for VAD implantation, as patients are typically encouraged to gradually increase activity levels under guidance.

Correct Answer: C

Rationale: The correct answer is C: Taking all asthma medications as prescribed. This is the most appropriate action to prevent exacerbation of asthma symptoms. By taking medications as prescribed, the patient can effectively manage and control their asthma, reducing the risk of exacerbation. Following the prescribed medication regimen helps to keep inflammation in check and maintain airway function. Choice A is incorrect because while follow-up appointments are important, they do not directly prevent exacerbation. Choice B is incorrect as limiting activity may not address the underlying cause of exacerbation. Choice D is incorrect as taking medications on an "as needed" basis may not provide consistent control of asthma symptoms, leading to potential exacerbation.

Correct Answer: C

Rationale: The correct answer is C: Ptosis on the left eyelid. Ptosis refers to drooping of the eyelid, which is a common condition in older adults. In this scenario, the nurse should document the finding as ptosis on the left eyelid because the client's left upper eyelid is drooping, covering more of the iris than the right eyelid. Explanation: Nystagmus (A) is an involuntary eye movement, not related to eyelid drooping. Exophthalmos (B) is the protrusion of the eyeball and not relevant to this scenario. Astigmatism (D) refers to a refractive error of the eye and does not cause eyelid drooping. Therefore, the correct choice is C as it accurately describes the client's condition.

Correct Answer: A

Rationale: Step-by-step rationale: 1. Bladder catheterization helps relieve urinary obstruction, a common postrenal cause of acute kidney injury. 2. By draining urine from the bladder, it prevents further damage to the kidneys. 3. This intervention addresses the underlying cause of the kidney injury, leading to improvement. Summary: - Choice A is correct as it directly addresses the postrenal cause by relieving urinary obstruction. - Choices B, C, and D are incorrect as they do not target the specific postrenal cause of acute kidney injury.