Noting the last time a stroke patient was seen normal is critical for which reason?

• A. It is critical for treatment decisions and potential thrombolytic therapy.
• B. It has no impact on treatment decisions.
• C. It only affects imaging choices.
• D. It is primarily for documentation.

Answer: (A)

Time since the patient was last known normal is crucial because the window for reperfusion therapy in acute ischemic stroke is time-based. Knowing when the patient was last normal establishes the onset time, which determines eligibility for thrombolytic treatment (such as tPA) within approved time frames and influences decisions about other reperfusion options like thrombectomy. If the last known well is within the treatment window, administering thrombolytics may be considered; if it’s beyond the window or uncertain, the risks may outweigh the benefits. When onset time is unknown, clinicians rely more on imaging and protocols, but the last known normal still sets the starting point for these decisions. This isn’t just about documentation or imaging choices—it's about guiding potentially life-saving treatment decisions.