Table 1.

Relative definitions of ischaemic cerebrovascular disease

Relative disease	Definition
Ischaemic cerebrovascular disease	It refers to degeneration, necrosis or transient functional loss of local brain tissue, including nerve cells, glial cells and connective fibres, due to blood supply disorder. It is one of the common clinical diseases, which is often found in the middle-aged and elderly people, and has a high disability rate and mortality rate.
Ischaemic stroke	It refers to ischaemic necrosis or softening of local brain tissue caused by cerebral blood circulation disorder, ischaemia and hypoxia.
Transient ischaemic attack (TIA)	It refers to transient neurological dysfunction caused by focal ischaemia of brain, spinal cord or retina without acute cerebral infarction.
Non-disabling ischaemic cerebrovascular events (NICE)	It refers to ischaemic cerebrovascular diseases that do not leave neurological functional disability, including the following three groups of people: TIA, mild ischaemic stroke (NIHSS score ≤3 or ≤5), stroke that is rapidly relieved and does not leave disability. Its clinical features are usually mild symptoms or rapid and complete relief when the disease occurs, and no or only slight neurological deficits are left when the disease occurs, which does not affect daily life and work.
Disabling ischaemic cerebrovascular events	It refers to ischaemic cerebrovascular events with significant disability left after onset.
Atherosclerotic cardiovascular diseases	It refers to various clinical diseases with ischaemic or endothelial dysfunction-inflammatory changes caused by atherosclerosis, including acute coronary syndrome, myocardial infarction, stable or unstable angina pectoris, after coronary revascularisation, atherosclerosis-induced stroke or TIA (newly added), peripheral arterial disease or after vascular reconstruction.

NIHSS, National Institutes of Health Stroke Scale.