I wrote a post several years ago on what you need to know about stroke. Here is the opening graf: “The National Stroke Association (NSA) says, “A stroke or heart attack of the brain occurs when a blood clot blocks an artery (a blood vessel that carries blood from the heart to the body) or a blood vessel (a tube through which the blood moves through the body) breaks, interrupting blood flow to an area of the brain. When either of these things happens, brain cells begin to die and brain damage occurs.”
Patients suffer stroke-like symptoms such as paralysis on one side or difficulty speaking. While symptoms typically go away in less than a few minutes and there’s no brain damage, TIAs often are followed by severe strokes.
TIAs are an “ominous prelude to an impending cerebrovascular catastrophe, but also the opportunity to prevent a disabling event,” Loyola Medicine neurologists Camilo R. Gomez, MD, Michael J. Schneck, MD and José Biller, MD report in the journal F1000 Research. However, the neurologists add that rapid evaluation and treatment can reduce the risk of stroke by about 80 percent during the dangerous first week following a TIA.
Most strokes are ischemic, meaning they are caused by blood clots that block blood flow to a part of the brain. TIAs also are caused by blood clots, but the clots quickly dissolve or are dislodged. However, there’s a 5 to 10 percent risk of suffering a stroke during the 30 days following a TIA, and 15 to 20 percent of ischemic stroke patients report having experienced an earlier TIA.
A TIA requires urgent management, but there is controversy about how to accomplish this: Should patients be temporarily hospitalized, which may be safer, or should they be evaluated on an outpatient basis, which may be more convenient and cost effective? The existing literature is inconclusive. “Both approaches have advantages and disadvantages,” the Loyola neurologists wrote. Continue reading