Stroke alert onset within how many hours?

Stroke alert onset within how many hours?

• A. 24 hours
• B. 12 hours
• C. 5 hours
• D. 2 hours

Answer: (C)

Time is brain: stroke care hinges on getting the patient evaluated and treated within a limited window to save brain tissue. In many EMS stroke protocols, the stroke alert is activated when onset is within five hours to ensure the hospital can rapidly assess and consider reperfusion therapy, such as intravenous thrombolytics, and to mobilize imaging and treatment resources quickly. Five hours is the best fit because it aligns with the practical window used for timely treatment decisions in prehospital and hospital workflows. Shorter windows (like two hours) are too restrictive for many patients who could still be eligible for treatment, while much longer windows (12 or 24 hours) would miss opportunities to prevent irreversible brain injury. If onset time is unknown, treat as stroke and act quickly, but the five-hour guideline still informs the urgency and transport decisions in most EMS protocols.

Time is brain: stroke care hinges on getting the patient evaluated and treated within a limited window to save brain tissue. In many EMS stroke protocols, the stroke alert is activated when onset is within five hours to ensure the hospital can rapidly assess and consider reperfusion therapy, such as intravenous thrombolytics, and to mobilize imaging and treatment resources quickly.

Five hours is the best fit because it aligns with the practical window used for timely treatment decisions in prehospital and hospital workflows. Shorter windows (like two hours) are too restrictive for many patients who could still be eligible for treatment, while much longer windows (12 or 24 hours) would miss opportunities to prevent irreversible brain injury.

If onset time is unknown, treat as stroke and act quickly, but the five-hour guideline still informs the urgency and transport decisions in most EMS protocols.