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There also seems to be a genetic component to syncope. A recent genetic study has identified first risk locus for syncope and collapse. The lead genetic variant, residing at chromosome 2q31.1, is an intergenic variant approximately 250 kb downstream of the ZNF804A gene.
Those affected may have episodes of syncope. [2] The abnormal heart rhythms seen in those with Brugada syndrome often occur at rest. [1] [5] They may be triggered by a fever. [1] [5] About a quarter of those with Brugada syndrome have a family member who also has the condition. [2] Some cases may be due to a new genetic mutation or certain ...
Long QT syndrome, the most common form of cardiac channelopathy, is characterized by prolonged ventricular repolarization, predisposing to a high risk of ventricular tachyarrhythmias (e.g., torsade de pointes), syncope, and sudden cardiac death. [1]
Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. [7] It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. [1]
Syncope; Episode of ventricular arrhythmia; Management options include pharmacological, surgical, catheter ablation, and placement of an implantable cardioverter-defibrillator. Prior to the decision of the treatment option, programmed electrical stimulation in the electrophysiology laboratory may be performed for additional prognostic ...
Reflex syncope can occur in otherwise healthy individuals, and has many possible causes, often trivial ones such as prolonged standing with the legs locked. [ citation needed ] The main danger of vasovagal syncope (or dizzy spells from vertigo) is the risk of injury by falling while unconscious.
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Adams–Stokes syndrome, Stokes–Adams syndrome, Gerbec–Morgagni–Adams–Stokes syndrome or GMAS syndrome is a periodic fainting spell in which there is intermittent complete heart block or other high-grade arrhythmia that results in loss of spontaneous circulation and inadequate blood flow to the brain.