Presyncope

From Ganfyd

A state before syncope. The patient often has non specific symptoms which may reflect their individual response to the decreasing cerebral perfusion pressure where this comes on gradually over more than a few cardiac cycles. This is the situation with some forms of neurogenic syncope or major haemorrhage, but not usually with malignant arrhythmia or pulmonary embolism. These often are similar to those with orthostatic hypotension which most have experienced and include feeling lightheaded, legs weak, dizzy and can progress to other more specific symptoms such as tinnitus as the blood pressure falls.