Stroke Warning Signs
Stroke is a medical emergency where every minute counts. Recognizing the warning signs using the BE FAST method can save a life and reduce long-term disability.
Understanding Stroke: A Brain Attack
A stroke, often called a brain attack, occurs when blood supply to a part of the brain is interrupted or severely reduced, depriving brain tissue of oxygen and nutrients. Within minutes, brain cells begin to die, and with each passing minute, approximately 1.9 million neurons, 14 billion synapses, and 12 kilometers of myelinated fibers are lost. There are two major types of stroke. Ischemic stroke, accounting for approximately 87 percent of all strokes, occurs when a blood clot blocks a cerebral artery, either from a thrombus formed at the site of an atherosclerotic plaque in a cerebral or carotid artery, or from an embolus originating in the heart in conditions such as atrial fibrillation or from an atherosclerotic plaque in the aortic arch or carotid artery. Hemorrhagic stroke accounts for about 13 percent of strokes but a disproportionately higher share of mortality, and occurs when a weakened blood vessel ruptures, bleeding into the brain parenchyma (intracerebral hemorrhage) or into the subarachnoid space surrounding the brain (subarachnoid hemorrhage). Intracerebral hemorrhage is most commonly caused by chronic hypertension damaging small penetrating arteries, while subarachnoid hemorrhage is most frequently caused by rupture of a cerebral aneurysm. A transient ischemic attack, or TIA, is a temporary blockage that produces stroke symptoms lasting less than 24 hours, usually minutes to an hour, without causing permanent brain infarction. A TIA is a critical warning sign, as approximately 10 to 15 percent of patients with a TIA will experience a full stroke within 90 days, with half of those occurring within the first 48 hours.
🧠The BE FAST Acronym: Recognizing Stroke Symptoms
The BE FAST acronym is a simple, memorable tool for recognizing the most common signs of stroke and emphasizes the urgency of timely action. B stands for Balance: sudden loss of balance or coordination, difficulty walking, dizziness, or a sense of the room spinning. E stands for Eyesight: sudden vision changes including blurred vision, double vision, or loss of vision in one or both eyes, which may result from involvement of the occipital lobe, brainstem, or optic pathways. F stands for Face: ask the person to smile and observe whether one side of the face droops or feels numb; facial asymmetry is a hallmark of stroke affecting the motor cortex or facial nerve pathways. A stands for Arm: ask the person to raise both arms and check whether one arm drifts downward or cannot be raised at all, indicating unilateral motor weakness. S stands for Speech: ask the person to repeat a simple sentence and listen for slurred speech, inability to find words, or incomprehensible speech, reflecting involvement of language centers in the dominant hemisphere. T stands for Time: if any of these signs are present, even if they resolve quickly, call emergency services immediately; note the time when symptoms first appeared because it determines eligibility for time-sensitive treatments. Beyond BE FAST, other stroke symptoms include sudden severe headache with no known cause, which may indicate subarachnoid hemorrhage; sudden confusion or altered mental status; and sudden numbness or weakness of the leg as well. The key principle is that stroke symptoms are acute in onset and typically affect one side of the body.
⏰Time Is Brain: The Critical Treatment Window
The principle that time is brain underscores the urgency of stroke treatment. Intravenous thrombolysis with alteplase, a recombinant tissue plasminogen activator that dissolves clots, is the cornerstone of acute ischemic stroke therapy but is only approved for administration within 4.5 hours of symptom onset, and its effectiveness declines sharply with time. The number needed to treat for a favorable outcome is approximately 5 within the first 90 minutes, 9 within 91 to 180 minutes, and 14 within 181 to 270 minutes. After 4.5 hours and up to 24 hours, selected patients may still benefit from mechanical thrombectomy, a procedure in which an interventional neuroradiologist or neurosurgeon threads a catheter from the groin or wrist to the occluded cerebral artery and retrieves or aspirates the clot, restoring blood flow. The therapeutic window for thrombectomy extends to 24 hours in carefully selected patients with a small core infarct and significant salvageable penumbra identified by advanced CT perfusion or MRI diffusion-perfusion imaging. For hemorrhagic stroke, treatment focuses on controlling blood pressure, reversing any coagulopathy, managing intracranial pressure, and in selected cases, surgical evacuation of the hematoma or clipping or coiling of a ruptured aneurysm. Every minute of delay in restoring blood flow or controlling hemorrhage translates into greater brain tissue loss and worse functional outcomes. This is why stroke is always a 108 emergency and why one should never wait at home to see if symptoms resolve. Dr. Yuvraj Lahre emphasizes that patients arriving at the hospital within the golden hour have the best chance of returning to independent life.
❤️Risk Factors and Prevention Strategies
The majority of strokes are preventable through identification and management of modifiable risk factors. Hypertension is the single most important modifiable risk factor, present in approximately 70 percent of first stroke patients, and lowering systolic blood pressure by even 10 mmHg reduces stroke risk by approximately one-third. Atrial fibrillation, a common cardiac arrhythmia where the upper chambers of the heart quiver rather than contract effectively, increases stroke risk fivefold by allowing blood to stagnate and form clots in the left atrial appendage; anticoagulation reduces this risk by 60 to 70 percent. Diabetes mellitus accelerates atherosclerosis and increases stroke risk two to fourfold; maintaining hemoglobin A1c below 7 percent is the recommended target for most patients. Dyslipidemia, particularly elevated low-density lipoprotein cholesterol, contributes to atherosclerotic plaque formation in the carotid arteries and cerebral vasculature; statin therapy reduces first stroke risk by approximately 25 percent. Lifestyle factors are equally important: smoking doubles the risk of ischemic stroke, and cessation reduces risk to near that of nonsmokers within five years; physical inactivity, obesity, and diets high in sodium and low in fruits and vegetables are independent risk factors. Excessive alcohol consumption increases both ischemic and hemorrhagic stroke risk, though very light consumption may have a modest protective effect for ischemic stroke. Other important risk factors include carotid artery stenosis, prior TIA or stroke, sickle cell disease, and certain autoimmune conditions that cause vasculitis. Comprehensive stroke prevention involves a combination of pharmacological management of vascular risk factors, antiplatelet or anticoagulant therapy where indicated, and aggressive lifestyle modification.
What to Do While Waiting for Emergency Services
If you suspect someone is having a stroke, call 108 immediately. Do not drive the person to the hospital yourself unless there is absolutely no alternative, as paramedics can begin assessment, provide basic life support, and alert the receiving hospital's stroke team to prepare for your arrival, significantly reducing door-to-needle time. While waiting for the ambulance, note the exact time when symptoms began or when the person was last seen normal, as this is critical information the emergency team will need. Lay the person flat with the head and shoulders slightly elevated on a pillow if possible. If the person is unconscious, place them in the recovery position on their side to maintain an open airway and allow secretions to drain. Do not give the person anything to eat or drink, as stroke can impair swallowing and increase the risk of aspiration. Do not administer aspirin or any other medication unless specifically instructed by emergency medical personnel, because if the stroke is hemorrhagic rather than ischemic, aspirin can worsen bleeding. Loosen any tight clothing around the neck and chest to facilitate breathing. Stay calm, speak reassuringly, and provide comfort while continuously monitoring consciousness and breathing. If the person stops breathing and you are trained in CPR, begin chest compressions. In Ranchi, Dr. Yuvraj Lahre at Neurovision Clinic provides comprehensive post-stroke neurological care and secondary prevention, though acute stroke treatment must be initiated at a designated stroke-ready hospital.
Time lost is brain lost. If you or a loved one has experienced stroke symptoms, even if they resolved, do not wait: seek immediate evaluation. For post-stroke neurological care, secondary prevention, and expert neurological consultation, visit Dr. Yuvraj Lahre, DM Neurology AIIMS Bhubaneswar and Gold Medalist, at Neurovision Clinic. Call +91 99557 07207 or visit us at 1st Floor Above DCB Bank, Vikas Sadar, Neori, Ranchi, Jharkhand 835217. We are open Monday through Saturday, 9:00 AM to 8:00 PM. Fast action saves lives.
Consult Dr. Yuvraj Lahre at Neurovision Clinic, Ranchi.