What is syncope and is it dangerous?

Syncope is a medical term for a sudden, temporary loss of consciousness, often referred to as fainting. It is caused by a temporary reduction in blood flow to the brain.

A vasovagal reaction is the most common form and is often caused by stress, anxiety, pain, or the sight of blood. It is usually harmless and occurs when blood pressure and heart rate suddenly drop, reducing blood flow to the brain.

Orthostatic hypotension will occur when someone suddenly stands up from a lying or sitting position, causing a temporary drop in blood pressure and insufficient blood flow to the brain. Cardiogenic syncope is caused by cardiac arrhythmias, heart valve problems, or other heart-related conditions. This type of syncope can be more serious and often requires medical evaluation.

Vasovagal syncope and orthostatic hypotension are often harmless and usually do not require extensive medical treatment. However, it is important to avoid triggers and be careful when getting up to avoid recurrence. Cardiogenic and neurological causes of syncope can be more serious and often require medical evaluation and treatment. Syncope caused by arrhythmias or heart problems may indicate an increased risk of serious heart problems, including sudden cardiac death.

Make sure the person is safe and cannot fall or injure themselves. Lay the person down and raise the legs to promote blood flow to the brain. Notify the emergency services.

Source: https://www.ahajournals.org/doi/full/10.1161/CIR.0000000000000499

Author: Prof. Dr. Dirk Devroey - Latest update: 2022-12-09 - Copyright: Clinifacts 2024