[Is endothelial dysfunction of practical relevance?].

Endothelial dysfunction is a "systemic disease" and a predictor of preclinical atherosclerosis. A relatively simple-to-perform and reliable diagnostic method of evaluating endothelial function is the measurement of the forearm blood flow (FBF). Unremarkable vasoreactivity of the brachial artery on performing FBF measurement is a prognostically favorable sign. This applies equally to patients with cardiovascular risk factors such as hypertension, hyperlipidemia or diabetes mellitus, and to patients with angina pectoris. A number of investigations suggest that cardiovascular endpoints can be significantly diminished by reducing the risk factors.