Symptoms of syncope

summary

Syncope is a clinical syndrome, also known as syncope. This disease is caused by the sudden decrease of the whole brain blood flow and the temporary lack of blood or oxygen supply to the brain, resulting in the inhibition of the function of the reticular formation and the loss of consciousness; It lasts from seconds to minutes; When the attack cannot maintain the posture tension, therefore cannot stand and faints, but recovers quickly. The causes of sudden decrease of cerebral blood flow are as follows: blood pressure drops sharply; Cardiac output decreased abruptly; Acute and extensive cerebral artery insufficiency. The above-mentioned three kinds of abnormalities are caused by various factors, and various factors can be related to each other. Syncope in some patients is multifactorial.

Symptoms of syncope

Prodromal stage: obvious autonomic nervous symptoms, sudden pale, cold sweat, nausea, epigastric discomfort, pupil dilation, fatigue, dizziness, tinnitus, yawn and blurred vision, etc., body swing due to decreased muscle tension. This period lasts for a few seconds. If the patient sits down or lies down immediately, the symptoms will gradually subside, otherwise he will soon lose consciousness and enter the next period.

Syncope: loss of consciousness and loss of body muscle tension and fall. The patient's pulse is fine, blood pressure is often reduced, breathing becomes shallow, pupil dilation and light reflex disappear, tendon reflex disappear, cold extremities, and urinary incontinence may occur. During this period, consciousness gradually recovers and enters the next stage. The loss of consciousness lasts for tens of seconds, and small facial and limb myoclonic twitch may occur.

Recovery period: patients gradually awake, still pale, sweating, weak body. Nausea, hyperventilation, unconsciousness and headache may occur. Rest for dozens of minutes can completely recover. If you just wake up quickly, you can faint again. There will be no sequelae of nerves and body.

matters needing attention

If syncope has occurred, it is best to have the patient lying flat on the ground. So the cardiovascular system doesn't have to fight gravity. At the same time, turn the patient's body to one side to avoid aspiration. It's not right to sit after syncope, because the blood has to flow up to the brain.