CNRN: Cerebrovascular Exam 20 Questions with Verified Answers,100% CORRECT

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CNRN: Cerebrovascular Exam 20 Questions with Verified Answers Thrombotic strokes - CORRECT ANSWER More common Due to plaque formation May be preceded by TIAs Often occurs during sleep, "wake u... p" strokes Deficits worsen Embolic strokes - CORRECT ANSWER Occur when blood clots or atheromatous debris become lodged into cerebral circulation Atrial fib most common source Abrupt onset Often seen in younger patients Predominantly MCA involvement CT shows multiple V-shaped infarcts in different vascular territories Ischemic stroke risk factors - CORRECT ANSWER Age > 65 Male AA race Southern states HTN Heart disease DM Smoking Previous stroke/TIA Afib Hyperlipidemia Atypical stroke presentation symptoms - CORRECT ANSWER Pain, mental status changes, generalized neurological symptoms (hiccupping, nausea, vomiting) What does the ACA supply? - CORRECT ANSWER Medial aspect frontal, parietal, temporal lobes **hair portion of a Mohawk** What does the MCA supply? - CORRECT ANSWER Lateral aspect frontal, parietal, temporal lobes **bald portion of Mohawk** What does the PCA supply? - CORRECT ANSWER Occipital lobe ACA syndrome symptoms - CORRECT ANSWER Impaired gait Paralysis of contralateral foot & leg Flat affect Mental impairment Urinary incontinence Gaze deviation TO affected side Aphasia MCA syndrome symptoms - CORRECT ANSWER Hemiplegia and sensory impairment contralateral face & arm Aphasia Hemineglect (nondominant hemisphere) Gaze deviation toward affected side Dysarthria PCA syndrome symptoms - CORRECT ANSWER Contralateral homonymous hemianopsia Visual deficits Memory deficits Receptive aphasia (Wernicke's) ICA syndrome symptoms - CORRECT ANSWER Paralysis and sensory deficits contralateral arm, leg, and face Homonymous hemianopsia (loss of medial vision in one eye and lateral vision in other) What is homonymous hemianopsia? - CORRECT ANSWER Loss of medial vision in one eye, lateral vision in other Cerebellar artery syndrome symptoms - CORRECT ANSWER Nausea & vomiting Dysphagia Dysarthria Loss of pain and temperature on contralateral side Horizontal nystagmus Ipsilateral Horner's syndrome Ataxia Vertigo Vertebrobasilar artery syndrome symptoms - CORRECT ANSWER Impaired LOC CN palsies Dysarthria (bulbar symptom) Dysphasia (bulbar symptom) Ipsilateral Horner's syndrome Nystagmus Vertigo Nausea & vomiting Contralateral paresis or paralysis extremities Ataxia Sensory deficits ipsilateral face and contralateral body Basilar artery syndrome symptoms - CORRECT ANSWER Quadriplegia Weakness in face, tongue, and pharyngeal muscles Possible locked in syndrome Stroke mimic rule outs - CORRECT ANSWER Postictal state CNS infections Tumor Toxic-metabolic disturbances Hypo/hyperglycemia Migraines Bulbar symptoms Multimodal MRI options - CORRECT ANSWER Diffusion weighted imagery (DWI), perfusion weighted imagery (PWI), MR angio gradient echo Diffusion weighted imagery - CORRECT ANSWER Detection of ischemia within 30 minutes Able to differentiate reversible from irreversible Perfusion weighted imagery - CORRECT ANSWER Focus correlation between ischemic volume with acute clinical deficits or with volume of chronic infarct MR gradient echo - CORRECT ANSWER used to increase accuracy of MRI in detecting intraparenchymal hemorrhage within 6 hours onset Capability of detecting silent microbleeds which increase risk of hemorrhage with thrombolytics [Show More]

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