Why is it important to note when stroke symptoms began?

• A. To determine eligibility for thrombolytic therapy and care decisions
• B. To decide if you should call EMS
• C. To estimate the time of day
• D. To measure blood pressure

Answer: (A)

Timing of stroke onset is crucial because it determines whether a patient can receive clot-busting therapy and shapes the overall care plan. Treatments like thrombolytic medicine must be given within a narrow window after symptoms start, so knowing the exact time helps clinicians quickly decide if the patient is eligible and what other steps are needed, such as the type of imaging to confirm a ischemic stroke and rule out hemorrhage. If the onset time is unknown or outside the recommended window, these therapies may be unsafe or ineffective, influencing where the patient is transported and which interventions are pursued. This is why documenting when symptoms began is a key part of rapid, targeted stroke care.