Neurologic And Sedation Issues
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USMLE Step 2 CK › Neurologic And Sedation Issues
A 71-year-old man with atrial fibrillation is intubated after aspiration. After stopping sedation, he awakens but has new right gaze preference and left hemiplegia. Exam: NIHSS high; pupils equal/reactive. Labs: glucose 140, platelets 180k; CT head without contrast shows no hemorrhage. Current regimen: propofol recently stopped, fentanyl 25 mcg/hr. What diagnostic test should be prioritized to assess the patient's neurologic status?
Carotid duplex only, then reassess tomorrow
MRI brain in 48 hours for definitive diagnosis
Routine EEG to confirm focal motor seizures
Lumbar puncture to evaluate for CNS infection
CT angiography head and neck for large-vessel occlusion
Explanation
This question tests Step 2 CK competency in managing neurologic and sedation issues in critical care. Neurologic and sedation management in the ICU involves careful monitoring of sedation levels and addressing any neurologic changes promptly. In this scenario, specific findings such as gaze preference and hemiplegia suggest large-vessel occlusion, guiding the management plan. The correct answer, choice A, is appropriate because it addresses the immediate clinical need based on current guidelines. A common distractor, choice D, fails because it overlooks a critical aspect of the patient's condition, such as the urgency of acute stroke evaluation over delayed MRI. To improve clinical decision-making skills, focus on current guidelines for sedation and neurologic assessments, and practice interpreting clinical data accurately.
A 72-year-old man is in the ICU after subdural hematoma evacuation. Over 2 hours he develops worsening headache, vomiting, and decreased responsiveness. Exam: GCS drops from 14 to 10, left pupil 5 mm sluggish, right 3 mm reactive; new right arm weakness. Vitals: BP 178/92, HR 52, irregular respirations on ventilator triggering. Labs: INR 1.1, platelets 210k. CT head earlier today shows postoperative changes with small residual hematoma. Current regimen: fentanyl 50 mcg/hr, propofol 20 mcg/kg/min. What diagnostic test should be prioritized to assess the patient's neurologic status?
Lumbar puncture for cerebrospinal fluid analysis
Repeat noncontrast CT head immediately
Carotid duplex ultrasonography at bedside
Routine EEG to evaluate subclinical seizures
MRI brain with and without contrast
Explanation
This question tests Step 2 CK competency in managing neurologic and sedation issues in critical care. Neurologic and sedation management in the ICU involves careful monitoring of sedation levels and addressing any neurologic changes promptly. In this scenario, specific findings such as worsening headache, GCS drop, dilated pupil, and new weakness suggest possible hematoma expansion, guiding the management plan. The correct answer, choice A, is appropriate because it addresses the immediate clinical need based on current guidelines. A common distractor, choice C, fails because it overlooks a critical aspect of the patient's condition, such as the urgency of ruling out acute changes before advanced imaging. To improve clinical decision-making skills, focus on current guidelines for sedation and neurologic assessments, and practice interpreting clinical data accurately.
A 59-year-old woman is ventilated after complicated hysterectomy with massive transfusion. She is intermittently agitated and hypertensive during suctioning despite deep sedation. Exam: RASS -3 baseline but spikes to +2 with procedures; grimaces to pain. Labs: Hgb 8.1 g/dL, lactate 1.8, electrolytes normal; CT head normal. Current regimen: propofol 40 mcg/kg/min, no scheduled analgesic, midazolam PRN. What is the most appropriate next step in managing this patient's sedation?
Add scopolamine patch for agitation control
Discontinue propofol and use only benzodiazepines
Prioritize analgesia by starting an opioid infusion
Increase propofol and avoid all opioids
Start haloperidol to treat procedure-related pain
Explanation
This question tests Step 2 CK competency in managing neurologic and sedation issues in critical care. Neurologic and sedation management in the ICU involves careful monitoring of sedation levels and addressing any neurologic changes promptly. In this scenario, specific findings such as agitation during procedures and high pain scores suggest inadequate analgesia, guiding the management plan. The correct answer, choice A, is appropriate because it addresses the immediate clinical need based on current guidelines. A common distractor, choice B, fails because it overlooks a critical aspect of the patient's condition, such as the need for balanced analgesia in addition to sedation. To improve clinical decision-making skills, focus on current guidelines for sedation and neurologic assessments, and practice interpreting clinical data accurately.