Understanding Strokes and Warning Strokes: Recognizing Symptoms and Reducing Risk

Strokes are a significant cause of death in the U.S., affecting nearly 800,000 people annually. On average, a stroke occurs every 40 seconds in the country. Individuals with a family history of stroke or risk factors like high blood pressure and certain heart conditions face increased risk. Understanding stroke symptoms and risk factors is crucial for prevention and timely intervention.

Dr. Brandon Giglio, director of vascular neurology at NYU Langone Hospital—Brooklyn, states that approximately 85% of strokes in the U.S. are ischemic, caused by a lack of blood flow to the brain. The remaining 15% are hemorrhagic, resulting from a ruptured blood vessel in the brain.

Many stroke patients also experience a 'warning stroke' days, weeks, or months before a major event.

Understanding Warning Strokes (Transient Ischemic Attacks)

Warning strokes are medically known as transient ischemic attacks (TIAs). These are fleeting but serious medical conditions that can precede full-blown strokes. Dr. Ahmed Itrat, stroke medical director at Cleveland Clinic Akron General, notes that up to 1 in 5 people who experience a TIA could have a stroke within 90 days if they do not receive medical attention.

A TIA involves a sudden onset of temporary neurological injury symptoms that resolve on their own. While similar to stroke symptoms, TIAs do not result in permanent neurological injury. However, the absence of permanent brain damage does not diminish the seriousness of a TIA.

Dr. Giglio emphasizes that a TIA is a harbinger for a future stroke, potentially within 48 hours or up to 90 days.

Dr. Joshua Willey, a stroke neurology expert at Columbia University, prefers the term 'warning strokes' over 'ministrokes' to highlight the emergent nature of the condition.

Recognizing Symptoms: BE FAST

The signs of TIAs and strokes are identical. The widely accepted mnemonic device 'BE FAST' details these symptoms, which typically appear quickly:

• Balance — Changes in or loss of balance.
• Eyesight — Vision changes, such as blurriness, vision loss, or double vision.
• Facial droop — Drooping of the face or an uneven smile.
• Arm — Weakness in one arm.
• Speech — Speech changes, including slurring words or speaking unintelligibly.
• Time — It is time to call emergency services. Dr. Willey also notes that 'T' can represent a severe, sudden headache.

Individuals may experience all, one, or a combination of these symptoms. Immediate medical attention is necessary if any of these issues are observed.

Fleeting Symptoms Require Prompt Action

Many people may dismiss TIA symptoms due to their brief duration. However, these symptoms must be taken seriously regardless of how short-lived they are.

TIAs typically last, at most, 5 to 10 minutes, and certainly less than an hour, sometimes lasting only 30 to 60 seconds. Despite their transient nature, it is impossible to predict if symptoms will resolve or persist and lead to disability.

If any symptoms are noticed, emergency medical services should be contacted immediately, rather than waiting for symptoms to subside. Upon arrival at an emergency room, individuals should clearly communicate that they suspect a stroke or TIA to ensure prompt treatment. If an emergency room visit is not feasible, a doctor or cardiologist should be consulted as soon as possible, ideally within a very short timeframe given the risk of a stroke within 48 hours following a TIA.

Reducing Stroke Risk

Conditions such as high cholesterol and uncontrolled diabetes increase the risk of stroke. Managing these conditions effectively through discussion with a doctor is crucial. Lifestyle adjustments, as recommended by the Centers for Disease Control and Prevention, may include increased physical activity, smoking cessation, dietary changes, and medication for conditions like high blood pressure.

Public understanding of stroke signs and symptoms, and appropriate actions, is urgently needed. Many individuals delay seeking treatment for both strokes and warning strokes.

Early recognition and immediate medical intervention are vital for better outcomes.