Walsh & Hoyt: Definitions

Ischemic cerebrovascular disease is a major cause of morbidity and mortality both in older patients and in young adults. Even children may have an ischemic stroke. The causes of ischemic stroke are numerous, and the management of many of these conditions is controversial. Hypoxia is a reduction in the normal concentration of tissue oxygen. Most often, hypoxia results from decreased blood flow: ischemia (from the Greek words ischo, to keep back, and haima, blood). In anoxia, which rarely occurs, no oxygen is present in the tissue. Ischemia. Transient ischemic attack (TIA). Reversible ischemic neurologic disability (RIND). Partial nonprogressing stroke (PNS). Completed stroke. Progressing stroke. Stroke-in-evolution.