A Cerebrovascular Accident (CVA), commonly known as a stroke, is a serious medical emergency that occurs when blood flow to a part of the brain is interrupted. This disruption can lead to brain cell death, resulting in permanent brain damage, long-term disability, or even death. Prompt medical treatment is crucial to improving outcomes.
Types of Stroke
– Ischemic Stroke: The most common type, making up about 80 per cent of all strokes. It happens when a blood clot blocks or narrows an artery supplying the brain, significantly reducing blood flow.
– Haemorrhagic Stroke: Occurs when a blood vessel in the brain bursts, causing bleeding (haemorrhage) in or around the brain.
– Transient Ischemic Attack (TIA): Often called a ‘mini-stroke’, – TIA is caused by a temporary blockage. Symptoms usually resolve within minutes to hours, but a TIA is a warning sign of a possible future stroke.
Recognising Stroke Symptoms
Quick recognition can save lives. Stroke symptoms usually appear suddenly and may include:
– Numbness or weakness in the face, arm, or leg, especially on one side
– Confusion, trouble speaking, or difficulty understanding speech
– n Vision problems in one or both eyes
– Trouble walking, dizziness, or loss of balance
– A sudden severe headache with no known cause
Remember the acronym FAST:
Face drooping, Arm weakness, Speech difficulty, Time to call emergency services.
Diagnosing a Stroke
Doctors use a combination of tools and tests, including:
– Medical history and physical examination to assess symptoms and risk factors
– Imaging tests like CT scans or MRIs to determine stroke type and location
– Blood tests to evaluate clotting and other factor
– Heart tests (EKG, echocardiogram) to find possible cardiac causes
Treatment Options
Treatment depends on the type of stroke and how quickly the patient receives care.
– Ischemic Stroke: Thrombolytic therapy: Medications like tPA can dissolve clots if given within 3 to 4.5 hours.
– Mechanical thrombectomy: A procedure to remove clots directly from brain arteries, typically within 6 to 24 hours.
– Haemorrhagic Stroke: Surgical intervention: To stop bleeding or relieve pressure on the brain.
– Medications: To lower blood pressure, reduce swelling, and prevent seizures.
The Role of Imaging in Stroke
Imaging is essential for diagnosing and managing strokes. Different techniques serve specific purposes:
– Non-Contrast CT Scan (NCCT)
Detects: Bleeding in the brain (haemorrhagic stroke)
Advantages: Fast and widely available
Limitations: Less sensitive in early ischemic strokes
– Magnetic Resonance Imaging (MRI)
Detects: Early ischemic changes with high accuracy
Advantages: Detailed images, even for small strokes
Limitations: Not always available in emergencies; some implants are a contraindication
– CT Angiography (CTA)
Visualizes: Brain blood vessels and blockages
Advantages: Helps in planning procedures like thrombectomy
Limitations: Requires contrast, which isn’t suitable for all patients
– MR Angiography (MRA)
Purpose: Vascular imaging without contrast (in some cases)
Advantages: Safer for patients with kidney issues or allergies
Limitations: May be less detailed than CTA
– Transcranial Doppler (TCD)
Assesses: Blood flow velocity in brain arteries
Advantages: Non-invasive and portable
Limitations: Operator skill-dependent
Rehabilitation and Prevention
Rehabilitation helps stroke survivors recover skills and regain independence. This may include:
– Physical therapy for mobility and strength
– Occupational therapy to regain daily skills
– Speech therapy for language and communication
– Psychological support for emotional and cognitive changes
– Preventing future strokes involves:
– Managing conditions like high blood pressure, diabetes, and cholesterol
– Adopting a healthy lifestyle: quitting smoking, eating well, and exercising regularly
– Taking prescribed medications consistently
Stroke is a time-sensitive emergency. Knowing the signs, acting fast, and seeking immediate medical care can make a life-saving difference. Public awareness and early intervention are key to reducing the impact of strokes in our community. Ekuphileni Clinic, your number one healthcare partner, is committed to providing comprehensive stroke care. The clinic has a fully equipped radiology department that ensures timely and accurate imaging for diagnosis, while the physiotherapy and rehabilitation department supports patients through their recovery journey with individualized care plans. For more information, visit www.ekuphileniclinic.com or call 7602 3380.
