A brain CT scan can show if there is bleeding in the brain or damage to the brain cells from a stroke. Magnetic resonance imaging (MRI) uses magnets and radio waves to create pictures of your brain. An MRI may be used instead of—or in addition to—a CT scan to diagnose a stroke.
Your doctor then will need to do blood tests and imaging tests to figure out which type of stroke you might have had. The most common kind is called ischemic stroke. Almost 90% of people who have a stroke have this, and it happens when a clot blocks blood flow.
Brain scans and tests
You should have a brain scan soon after symptoms start, within an hour of arriving at hospital if possible. The scan can show whether the stroke is due to a clot or a bleed. There are two main types of scan used: A computed tomography or CT scan.
If a stroke is suspected, a CT scan is usually able to show whether you have had an ischaemic stroke or a haemorrhagic stroke. It's generally quicker than an MRI scan and can mean you're able to receive appropriate treatment sooner.
Weakness, numbness or paralysis in the face, arm or leg, typically on one side of the body. Slurred or garbled speech or difficulty understanding others. Blindness in one or both eyes or double vision. Vertigo or loss of balance or coordination.
Call 9-1-1 immediately if any of these signs of stroke appear: Numbness or weakness in the face, arm, or leg; Confusion or trouble speaking or understanding speech; Trouble seeing in one or both eyes; Trouble walking, dizziness, or problems with balance; severe headache with no known cause.
Yes, you can have a stroke and not know it. A stroke's effects can be undetectable if the stroke is small or if the tissue damaged does not serve a critical function. Evidence of the stroke would show on a CT scan or an MRI of the brain, but it might not produce symptoms.
Diagnosis and Tests
The doctor will do some simple quick checks to test your vision, muscle strength, and ability to think and speak. Diagnostic testing consists of either a computed tomogram (CT) or magnetic resonance imaging (MRI) scan of the brain and carotid arteries to determine the possible cause of the TIA.
Some of the most common stroke mimics are seizures, migraine, fainting, serious infections and functional neurological disorder (FND). Once the person is diagnosed, they can have treatment or support to manage their symptoms.
Pre-strokes or mini strokes are the common terms used to describe a transient ischemic attack (TIA). Unlike a full blown stroke, a TIA only lasts a few minutes and does not cause permanent damage. Nevertheless it is a warning sign that a possible stroke may be coming in the future.
Some people will experience symptoms such as headache, numbness or tingling several days before they have a serious stroke. One study found that 43% of stroke patients experienced mini-stroke symptoms up to a week before they had a major stroke.
Can an ECG detect stroke? Yes. ECG can detect a heart problem that might lead to a stroke or even uncover a past problem such as a previous heart attack.
Part of the brain is robbed of the oxygen and blood supply it needs to function, because a blood vessel to part of the brain either has a clot or blockage, or bursts. The longer a stroke goes untreated, the more brain cells die. But there are treatments that can be given if a person reaches the hospital in time.
High blood pressure is the number one modifiable risk factor for stroke, often referred to as the silent killer!
In fact, ischemic strokes unfold over a period of 10 hours. That means that with every second you wait for treatment, the brain damage gets worse. If a stroke is untreated for the full 10 hours, the brain ages up to 36 years! With every minute you wait, the brain loses two million brain cells.
being sick. dizziness. confusion. difficulty understanding what others are saying.
Chronic stress can indirectly cause a stroke or TIA (transient ischemic attack or mini stroke). For instance, chronic stress can lead to high blood pressure, which is a known risk factor for stroke and heart disease. Stress can also cause inflammation in the arteries all over the body.
People who have mild strokes may feel like they've dodged a bullet since physical symptoms—blurred vision, difficulty speaking and weakness or numbness on one side of the body—usually disappear in a few minutes. Remember, if you notice any signs of a stroke in anyone young or old, seek immediate medical attention.
Most people who have a mini-stroke feel fine after the event. In fact, many people don't even realize they've had one! Symptoms might include weakness, numbness, tingling, vision changes or difficulty speaking. Most symptoms are temporary and dissipate within minutes but sometimes can last up to 24 hours.
Call 911 or emergency medical services if your blood pressure is 180/120 mm Hg or greater and you have chest pain, shortness of breath, or symptoms of stroke. Stroke symptoms include numbness or tingling, trouble speaking, or changes in vision.