NOLS Wilderness Medicine Wilderness First Responder (WFR) Practice Test

A transient ischemic attack (TIA) is best described as a temporary interruption in the blood supply to the brain. This condition is characterized by the sudden onset of neurological symptoms, such as weakness, numbness, or difficulty speaking, which typically resolve within a few minutes to a few hours. Because the blood supply is briefly compromised, symptoms occur, but since the blockage is not permanent, there are no lasting effects on brain function.

Understanding a TIA is crucial, as it serves as a warning sign for potential future strokes. The fact that the symptoms are temporary, yet indicative of a serious underlying vascular issue, highlights the importance of prompt medical evaluation even if the symptoms resolve.