CVA stands for cerebrovascular accident, the clinical term for a stroke. It happens when blood flow to part of the brain is cut off, either by a blockage or by bleeding. Without oxygen and nutrients from the blood, brain cells begin dying within minutes. Over 12 million people worldwide have a first stroke each year, and roughly half of those will die as a result, making CVA one of the most serious medical emergencies a person can face.
Why Doctors Use the Term CVA
You’ll see “CVA” on hospital charts, discharge paperwork, and insurance forms. It literally means an “accident” involving the blood vessels of the brain. In everyday language, it’s simply a stroke. Some clinicians also use the phrase “brain attack” to emphasize the urgency, much like “heart attack” signals a cardiac emergency. If you’ve come across CVA in a medical record, it means the person experienced a stroke.
The Two Main Types
About 87% of all strokes are ischemic, meaning a blood clot blocks an artery supplying the brain. The clot can form inside the brain’s own blood vessels (a thrombotic stroke) or travel from somewhere else in the body, like the heart or a large artery in the neck, and lodge in a brain vessel (an embolic stroke). Atrial fibrillation, an irregular heart rhythm, is a common source of these traveling clots.
The remaining 13% are hemorrhagic strokes, caused by bleeding. A weakened blood vessel ruptures and spills blood into or around the brain. This can happen within the brain tissue itself or in the space between the brain and its protective membranes. Hemorrhagic strokes are less common but tend to be more deadly because the bleeding both starves downstream tissue of blood and creates damaging pressure on surrounding brain structures.
Warning Signs to Recognize
The American Stroke Association uses the acronym BE FAST to help people spot a stroke quickly:
- B = Balance loss
- E = Eye or vision changes
- F = Face drooping, usually on one side
- A = Arm weakness, often one-sided
- S = Speech difficulty, including slurring or trouble understanding words
- T = Time to call 911
Other symptoms include sudden confusion, a severe headache with no obvious cause, vertigo or a spinning sensation, nausea, vomiting, double vision, and numbness or weakness on one side of the body. Symptoms typically come on suddenly and without warning. Not every stroke produces all of these signs, and some strokes cause only one or two subtle changes, so any sudden neurological shift warrants emergency attention.
What Happens at the Hospital
The first priority is determining which type of stroke is occurring, because the treatments are completely different. A CT scan of the head is typically done immediately. CT is considered the gold standard for detecting bleeding in the brain, and the results come back in minutes. If the scan shows no bleeding, the stroke is treated as ischemic.
For ischemic strokes, a clot-dissolving medication can be given intravenously if the patient arrives within roughly 3 to 4.5 hours of symptom onset. The sooner it’s administered, the better the outcome. For strokes caused by a large clot in a major brain artery, a procedure called mechanical thrombectomy can physically remove the clot. Depending on imaging results, this procedure may be performed up to 24 hours after symptoms began in carefully selected patients. This extended window has dramatically changed outcomes for some of the most severe strokes.
For hemorrhagic strokes, the goal shifts to controlling blood pressure, stopping the bleeding, and reducing pressure inside the skull. Surgery may be needed to drain accumulated blood or repair the ruptured vessel.
Major Risk Factors
High blood pressure is the single leading cause of stroke. It damages artery walls over time, making them more vulnerable to both clots and ruptures. The chance of having a stroke roughly doubles every 10 years after age 55, and women are more likely than men to have a stroke and to die from one. Black Americans face nearly twice the risk of a first stroke compared to white Americans.
Several other conditions raise risk significantly: high cholesterol (which narrows arteries), diabetes (which impairs blood flow and oxygen delivery), atrial fibrillation (which allows blood to pool and clot in the heart), and obesity (which fuels many of these other conditions simultaneously).
On the behavioral side, smoking damages blood vessels and reduces the oxygen-carrying capacity of blood. Diets high in saturated fat, trans fat, and sodium contribute to the arterial damage and high blood pressure that set the stage for a CVA. Physical inactivity and heavy alcohol use round out the major modifiable risks. The encouraging part is that most of these factors are within a person’s control.
Recovery and Rehabilitation
Stroke recovery generally follows a predictable arc. The first few weeks focus on medical stabilization and preventing a second event. Over the next one to three months, rehabilitation becomes the central focus, and this is when the most dramatic improvements typically happen. The brain’s ability to rewire itself and recruit undamaged areas to take over lost functions is strongest during this window.
By six months, the pace of recovery usually slows, though meaningful gains can continue well beyond that point. For survivors, the impact can affect physical mobility, speech and language, eating and swallowing, emotional regulation, and thought processes. Rehabilitation often involves physical therapy, occupational therapy, and speech therapy tailored to whichever functions were affected.
Preventing a Second Stroke
Someone who has had one CVA is at elevated risk for another. For strokes not caused by a heart rhythm problem, doctors typically start a combination of two blood-thinning medications for a short period (usually a few weeks to a few months), then transition to a single medication long term. Staying on dual therapy beyond about 90 days increases bleeding risk without additional protection against recurrent stroke.
For people whose stroke was linked to atrial fibrillation, long-term anticoagulation is the standard approach. Beyond medication, secondary prevention comes down to the same controllable risk factors: managing blood pressure, controlling blood sugar, staying physically active, eating a heart-healthy diet, and not smoking.