Critical Care Nursing Questions

Correct Answer: B

Rationale: The correct answer is B because evaluating the patient's serum creatinine for up to 72 hours after the procedure is crucial in detecting contrast-induced kidney injury. An increase in serum creatinine levels indicates impaired kidney function due to the contrast dye. This monitoring allows for early detection and intervention to prevent further kidney damage. Choice A is incorrect because a decrease in urine output is a late sign of kidney injury and may not be present in the early stages. Choice C is incorrect as a renal ultrasound is not typically used to detect contrast-induced kidney injury. Choice D is incorrect as postvoid residual volume assessment is not specific to detecting intrarenal injury related to contrast dye use.

Correct Answer: A

Rationale: The correct answer is A: Basilar skull fracture. Endotracheal intubation is recommended over nasotracheal intubation to avoid the risk of further damaging a basilar skull fracture. Nasotracheal intubation can potentially cause further injury due to the passage of the tube through the nasal cavity, which could exacerbate a basilar skull fracture. Summary of other choices: B: Cervical hyperextension - Not directly related to the choice between endotracheal and nasotracheal intubation. C: Impaired ability to "mouth" words - Not a significant factor in determining the choice of intubation method. D: Sinusitis and infection - While nasotracheal intubation can potentially lead to sinusitis and infection, the primary concern in this scenario is the risk of aggravating a basilar skull fracture.

Correct Answer: B

Rationale: The correct answer is B: There is redness at the catheter insertion site. Redness at the catheter insertion site could indicate infection, which is a serious complication that requires immediate attention to prevent sepsis. Reporting this to the healthcare provider promptly is crucial for timely intervention. Choices A, C, and D are not as urgent. A positive Allen test (choice A) assesses collateral circulation and is important for assessing perfusion before arterial cannulation but does not require immediate intervention. Choice C (MAP is 86 mm Hg) falls within the normal range, so it does not indicate an urgent issue. The visibility of the dicrotic notch in the arterial waveform (choice D) is a normal finding and does not require immediate action.

Correct Answer: B

Rationale: The correct answer is B: Central nervous system depression. This factor can lead to respiratory acidosis by depressing the respiratory drive, causing hypoventilation and retention of carbon dioxide. Anxiety and fear (A) may lead to hyperventilation, reducing carbon dioxide levels. Diabetic ketoacidosis (C) results in metabolic acidosis, not respiratory acidosis. Nasogastric suctioning (D) may cause respiratory alkalosis from excessive removal of carbon dioxide. Thus, central nervous system depression is the most likely factor predisposing a patient to respiratory acidosis.

Correct Answer: C

Rationale: Rationale: C: Providing the patient with 5 minutes of effleurage (gentle massage) and minimizing disruptions is the most helpful intervention. Effleurage can help reduce anxiety and promote relaxation, improving sleep quality. Minimizing disruptions creates a conducive environment for sleep. A: Providing a bath after REM sleep may disrupt the patient's sleep cycle, worsening anxiety. B: Increasing pain medication may not address the root cause of anxiety and could lead to dependency or side effects. D: Monitoring brain waves with polysomnography is an invasive procedure not typically indicated for managing anxiety-related sleep issues.