An ischaemic stroke, a prevalent medical condition, occurs due to a blockage obstructing the blood supply to the brain. This type of stroke is widely recognized as the most frequent. On the other hand, a haemorrhagic stroke stems from bleeding within or around the brain. Meanwhile, a transient ischaemic attack, also referred to as a mini-stroke, presents itself as a brief disruption of blood flow to the brain. If any of the following stroke indicators manifest, it is imperative to swiftly dial 9-1-1: Facial, arm, or leg numbness or weakness; Speech difficulties or confusion in comprehension; Impaired vision in one or both eyes; Issues with walking, accompanied by dizziness or balance problems; Intense headache devoid of a discernible cause.
For an ischaemic stroke, the primary treatment method revolves around a medication named tissue plasminogen activator (tPA). This potent substance dismantles blood clots obstructing the brain’s blood supply. An administration of tPA occurs through intravenous injection into the arm’s vein. This intervention necessitates prompt action, ideally within a three-hour window from the commencement of stroke symptoms. When evaluating the aftermath of a stroke, a brain CT scan proves invaluable in determining the presence of brain hemorrhage or damage resulting from the stroke. Conversely, magnetic resonance imaging (MRI) relies on magnets and radio waves to generate comprehensive brain images. In some cases, an MRI might substitute or complement a CT scan for an accurate stroke diagnosis.