What is a true statement regarding transient ischemic attacks (TIA)?

The statement regarding transient ischemic attacks (TIA) that is true is that clot-busting agents in the body dissolve the obstructive clot. TIAs are often caused by temporary blockages of blood flow to the brain, usually due to a clot or embolism. During a TIA, the body's natural clot-dissolving processes, which include various proteins and enzymes, may act to break down these clots rapidly. This is crucial because the symptoms of a TIA are temporary and resolve within a short period, typically within 24 hours, highlighting the role of these natural mechanisms in managing the occlusion before it leads to more severe complications.

Transient ischemic attacks do not usually cause permanent deficits. This is in stark contrast to strokes, which can lead to lasting neurologic deficits depending on the duration and extent of the blockage. While blockages of major cerebral vessels can lead to TIAs, TIAs themselves are not exclusively caused by this; smaller vessels can also be involved. Lastly, TIAs can indeed present symptoms similar to a stroke, such as weakness, numbness, or difficulty speaking, but these symptoms resolve completely. This reversible nature emphasizes the significance of recognizing TIAs as serious warning signs for potential future strokes.