What is the relationship among TIA, RIND, and CVA?

• A. TIA: lasts less than 24 hours; RIND: lasts 24-72 hours; CVA: lasts more than 72 hours and never fully resolves
• B. TIA: lasts more than 72 hours; RIND: lasts 24-72 hours; CVA: lasts less than 24 hours
• C. TIA: lasts 3-4 days; RIND: lasts 1 day; CVA: lasts weeks
• D. TIA: lasts less than 24 hours; RIND: lasts more than 72 hours; CVA: lasts more than 72 hours

Answer: (A)

The question tests how cerebrovascular events are traditionally distinguished by how long symptoms last and whether they fully recover. A transient ischemic attack is defined by symptoms that resolve within 24 hours. If deficits persist beyond 24 hours but eventually reverse completely, that’s a reversible ischemic neurologic deficit. If deficits continue beyond 72 hours and do not fully resolve, that indicates a cerebrovascular accident (stroke). So the durations align as under 24 hours for TIA, 24–72 hours with full recovery for RIND, and over 72 hours with permanent or residual deficits for CVA. The other options mix up these timeframes (for example, suggesting TIA lasts longer than 24 hours or CVA lasts under 24 hours), which doesn’t fit the classic sequence. Modern practice uses imaging to distinguish infarct from no infarct, but the duration-based framework shown here is the traditional way these conditions are categorized.