Acute Ischemic Stroke Management
Diagnosis and Localization
- The combination of contralateral motor deficits and speech difficulty localizes to the left cerebral hemisphere, specifically the left middle cerebral artery distribution, according to the American Heart Association 1, 2
- Contralateral motor deficits indicate damage to the left motor cortex or descending motor pathways, as stated by the American Academy of Neurology 1
- A pattern of face and arm involvement without leg weakness is classic for MCA territory stroke, as noted by the American Stroke Association 2
- A brainstem stroke would produce ipsilateral facial weakness with contralateral body weakness, which is not present in this patient, according to the American Heart Association 1
Immediate Management
- The American College of Cardiology recommends establishing the exact time of symptom onset to determine eligibility for IV tPA or endovascular thrombectomy 2
- The American Heart Association suggests transferring the patient immediately to an emergency department with capacity for advanced stroke care, including on-site brain and vascular imaging and access to tPA 3, 4, 5, 6
- Non-contrast CT head is the minimum required imaging to exclude intracranial hemorrhage before thrombolysis, as stated by the American Academy of Neurology 2
- CT angiography from aortic arch to vertex is necessary to identify large vessel occlusion requiring endovascular thrombectomy, according to the American Stroke Association 2, 3, 4, 6
Risk Factor Profile
- Smoking is a major modifiable risk factor for stroke, as noted by the American Heart Association 2
- Hypertension is the most important modifiable risk factor for stroke, according to the American College of Cardiology 2
- Stable angina indicates coronary artery disease and systemic atherosclerosis, as stated by the American Heart Association 2
Critical Pitfalls to Avoid
- The American Academy of Neurology recommends not delaying care to obtain extensive vascular imaging, as non-contrast CT is sufficient to initiate thrombolysis 2
- The American Heart Association suggests not treating hypertension aggressively in acute stroke unless BP >185/110 mmHg for tPA candidates or >220/120 mmHg otherwise, as cerebral perfusion depends on elevated BP 2
- The American Stroke Association notes that every minute counts in acute stroke treatment, and missing the time window can result in poor outcomes 2