Presincope - Causes and Symptoms

Definition

The presyncope is a feeling of impending fainting, which does not involve a complete loss of consciousness. The patient feels a sudden weakness, is confused and feels unstable; unlike syncope, the gradual onset allows the subject to lie down and avoid trauma, for example, falling to the ground.

The episode is short-lived and preceded by a series of prodromal symptoms, such as feeling sick, dizziness, nausea, yawning, blurred vision, pallor and cold sweating. Furthermore, they can be associated with epigastric malaise, sensation of a light head, muscular atony, arterial hypotension and filiform pulse.

In general, presyncope recognizes the same causes of fainting, so it can result from a lack of cerebral spraying and oxygenation (acute cerebral hypoperfusion), for a lowering of arterial pressure or a reduction in cardiac output.

This condition can occur due to various factors: physical trauma, bleeding, heart disease, severe arrhythmias, fatigue and fatigue. The presyncope can also be found in case of hypoglycemia, prolonged immobility, fasting, violent emotions, excessive heat and poor oxygenation of the environment.