Orthostatic hypotension syncope

Orthostatic hypotension syncope often occurs when the body position and head position change from the supine position to the upright position during an attack. Orthostatic hypotension syncope, also known as orthostatic hypotension syncope, refers to syncope caused by an excessive decrease in blood pressure (typically> 20 / 10mmHg) in the upright position. Orthostatic hypotension is not a special disease, but a manifestation of abnormal blood pressure regulation due to different reasons. In the past, it was called primary autonomic nerve failure (PAF), in which the simple manifestations were mainly orthostatic blood pressure changes without the involvement of autonomic nervous system damage such as sweat secretion disorders, pupil sphincter dysfunction, and so on. Acute and subacute patients are mainly characterized by more rapid orthostatic hypotension at the time of onset, but clinically rare.