Diagnosing Stroke (Cerebrovascular Accident, CVA)
To diagnose a stroke, doctors use a combination of examinations, screening tests, and procedures. These help confirm the presence of a stroke and determine its type, severity, or stage. Specialists involved in diagnosing strokes may include neurologists, radiologists, and emergency medicine physicians. These healthcare professionals have specialized knowledge and skills in identifying and treating strokes. Here are the different tests and procedures used in diagnosing a stroke:
- Physical examination: A doctor will ask about the person's symptoms and medical history. They will also check muscle strength, reflexes, sensation, vision, coordination, and blood pressure. Additionally, they may listen to the carotid arteries in the neck and examine the blood vessels at the back of the eyes.
- Imaging studies: Imaging tests are the best way to diagnose a stroke. They help doctors determine the size, location, and type of stroke. The most common imaging studies used include:
- Computed tomography (CT) scan: This scan uses X-rays to create detailed images of the brain. It can show if there is damage or bleeding in the brain.
- Magnetic resonance imaging (MRI): An MRI uses radio waves and magnets to create an image of the brain. It can detect changes in brain tissue.
- Cerebral angiography: This procedure involves injecting contrast dye into blood vessels to create X-ray images of the blood vessels in the brain. It helps identify blockages or abnormalities.
- Blood tests: Blood tests can provide helpful information about the potential cause of stroke symptoms. These tests measure levels of particular substances in the blood, such as clotting factors, and check for infections or high risk of bleeding or blood clots.
To determine the type, severity, or stage of a stroke, additional examinations or procedures may be done:
- Electrocardiogram (EKG/ECG): This test measures the electrical activity of the heart and can help diagnose heart problems that may lead to a stroke.
- Echocardiogram: An echocardiogram uses ultrasound to examine heart movement and detect abnormalities that could contribute to a stroke.
- Carotid ultrasound: This test evaluates blood flow and structure in the carotid arteries located in the neck. It helps identify any blockages that could cause clots to travel to smaller arteries in the brain.
- Lumbar puncture: A lumbar puncture involves testing spinal fluid for substances created from broken-down blood cells. This test is used if no other cause of stroke is found
These additional examinations and tests provide valuable information about underlying conditions or complications that may be associated with a stroke.
It's important to note that while these tests are helpful in diagnosing strokes, it is essential to consult with a healthcare professional for an accurate diagnosis and appropriate treatment plan tailored to individual needs.