CAMRT Radiography Practice Exam

What is a TIA (transient ischemic attack)?

1. A build up of plaque at the bifurcation of the carotid artery causing headache, dizziness, drowsiness, and mental confusion

2. A complete blockage of a blood vessel leading to a stroke

3. A permanent change in blood flow to the brain

4. A sudden severe headache with no other symptoms

The correct answer is: A build up of plaque at the bifurcation of the carotid artery causing headache, dizziness, drowsiness, and mental confusion

A transient ischemic attack (TIA) is characterized by a temporary disruption of blood flow to the brain, often referred to as a "mini-stroke." The symptoms occur due to a brief decrease in blood supply, similar to a stroke, but they resolve within a few minutes to hours, typically within 24 hours. The selection indicating a buildup of plaque at the bifurcation of the carotid artery accurately reflects one of the common causes for TIAs, where plaque can restrict blood flow and lead to symptoms such as headache, dizziness, drowsiness, and mental confusion. These symptoms present during a TIA result from the brain experiencing insufficient blood flow and can manifest as neurological deficits, which are temporary. The other options describe conditions related to strokes or headaches that do not accurately fit the definition of a TIA. A complete blockage of a blood vessel resulting in a stroke represents a more severe and permanent condition. Permanent change in blood flow to the brain implies long-lasting effects seen in strokes rather than the temporary effects of a TIA. A sudden severe headache might indicate a different condition entirely, such as a migraine or aneurysm, rather than a transient ischemic attack.