Free SCRN Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation:

The correct answer is B because hypertension is universally recognized as the single most powerful, modifiable risk factor for both ischemic and hemorrhagic stroke. Effective primary prevention heavily hinges on regular blood pressure screening and maintaining blood pressure within recommended target ranges through lifestyle modifications and antihypertensive pharmacotherapy. Option A is incorrect because an extreme sodium restriction below 500 mg daily is clinically impractical and unnecessary; standard guidelines recommend moderate sodium reduction (e.g., under 2,300 mg/day or lower for hypertensive individuals). Option C is incorrect because while regular aerobic exercise is beneficial, excessive high-intensity anaerobic lifting without moderation can acutely spike blood pressure. Option D is incorrect because regular alcohol consumption—even red wine—above moderate limits increases stroke risk, and guidelines advise against starting alcohol for health benefits. Nurse-led education in primary prevention empowers individuals to modify high-risk behaviors and control vascular risk factors effectively.

Comprehensive and Detailed Explanation:

The correct answer is A because the posterior cerebral artery (PCA) supplies the occipital lobes (primary visual cortex) and the inferomedial temporal lobes, which encompass critical memory structures like the hippocampus and parahippocampal gyrus. Occlusion of the PCA classically causes contralateral homonymous hemianopsia (frequently with macular sparing due to collateral dual blood supply from the middle cerebral artery) and marked memory deficits resulting from temporal lobe ischemia. Option B is incorrect because anterior cerebral artery strokes affect the medial frontal lobes, leading to lower extremity weakness and apathy. Option C is incorrect because middle cerebral artery strokes cause contralateral face and arm weakness, sensory loss, and language or visuospatial neglect deficits. Option D is incorrect because the anterior choroidal artery primarily supplies deep capsular structures and the optic tract. Recognizing PCA vascular topographies allows SCRN nurses to accurately correlate visual and cognitive examination findings with regional cerebral blood flow disruptions.

Comprehensive and Detailed Explanation:

The correct answer is A because the internal capsule contains densely packed descending motor fibers (corticospinal tract) and ascending sensory radiations. The lenticulostriate arteries—small penetrating branches arising directly from the middle cerebral artery stem—supply the internal capsule and basal ganglia. Occlusion of the MCA stem compromises blood flow through these lenticulostriate vessels,resulting in ischemia of the internal capsule and producing profound contralateral hemisensory and motor deficits. Option B is incorrect because the cerebellar tonsils are located in the posterior fossa and can herniate through the foramen magnum during increased ICP. Option C is incorrect because the medulla oblongata is supplied by vertebrobasilar branches. Option D is incorrect because the olfactory bulb governs cranial nerve I smell sensation. Recognizing deep vascular anatomy helps SCRN nurses correlate clinical findings with microvascular pathology.

Comprehensive and Detailed Explanation:

The correct answer is A because cigarette smoking is a major independent risk factor for atherosclerosis, endothelial injury, and thrombotic stroke. Smoking cessation—along with avoiding secondhand smoke—dramatically reduces the risk of recurrent ischemic and hemorrhagic stroke. Option B is incorrect because high sodium intake worsens hypertension and increases stroke risk. Option C is incorrect because heavy alcohol consumption raises blood pressure and significantly increases stroke risk. Option D is incorrect because physical inactivity promotes deconditioning and worsens vascular risk profiles. SCRN nurses provide vital counseling on smoking cessation resources and lifestyle modifications to support long-term secondary stroke prevention.

Comprehensive and Detailed Explanation:

The correct answer is A because lacunar strokes are driven by small vessel disease strongly linked to chronic hypertension and diabetes. Current secondary prevention guidelines recommend a tighter blood pressure target of below 130/80 mmHg for high-risk stroke survivors (such as those with lacunar infarcts or diabetes) to minimize ongoing microvascular damage and recurrence risk. Option B is incorrect because higher thresholds perpetuate vascular injury. Option C is incorrect because unmanaged hypertension leads to recurrent stroke and renal damage. Option D is incorrect because hypotensive targets cause cerebral hypoperfusion and ischemia. SCRN nurses empower patients with education on strict blood pressure management, sodium restriction, and medication adherence.