Free SCRN Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation:

The correct answer is A because current acute ischemic stroke guidelines stipulate that intravenous alteplase can be safely administered if blood pressure is successfully maintained at or below 185/110 mmHg. Since this patient's blood pressure is 172/98 mmHg, no antihypertensive treatment is required prior to initiating thrombolysis, avoiding unnecessary delays in door-to-needle times. Option B is incorrect because aggressively lowering blood pressure below normal baseline parameters prior to reperfusion can induce cerebral hypoperfusion and expand the ischemic penumbra. Option C is incorrect because waiting 24 hours violates time-sensitive stroke care protocols. Option D is incorrect because craniotomy is not indicated for this clinical presentation. SCRN nurses master blood pressure parameters to facilitate rapid, safe thrombolytic administration.

Comprehensive and Detailed Explanation:

The correct answer is A because the middle cerebral artery (MCA) is the largest branch of the internal carotid artery and supplies the lateral surface of the cerebral hemispheres, including the motor and sensory cortex representations for the face and upper extremities, as well as dominant language centers (Broca's and Wernicke's areas). Consequently, MCA occlusion characteristically produces contralateral face and arm weakness and sensory loss that are disproportionately more severe than leg involvement, often accompanied by aphasia when the dominant hemisphere is affected. Option B is incorrect because anterior cerebral artery strokes cause greater lower extremity weakness and apathy. Option C is incorrect because posterior cerebral artery strokes cause visual field cuts and memory deficits. Option D is incorrect because vertebral artery strokes cause brainstem signs. Recognizing vascular topographies is essential for advanced neurological assessment by SCRN nurses.