Reversible ischemia, according to Better Medicine, is the reversible restriction of blood flow that results in the deprivation of oxygen and nutrients to specific tissues. According to WebMD, this blood flow may return when the body is at rest.
Web MD describes ischemia as the narrowing of blood vessels. In some cases, according to Better Medicine, ischemia is treatable with medication or surgery, which commonly involves widening the narrowed blood vessels. Better Medicine also states that ischemia, if left untreated, can cause heart attacks and strokes, and, even if the ischemia is reversible, it does not get better without treatment. Therefore, if someone suffers from chest pain or pressure, which can be an indication of acute ischemia, it is advisable to seek immediate medical treatment.