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Episodes of vasovagal syncope are typically recurrent and usually occur when the predisposed person is exposed to a specific trigger. Before losing consciousness, the individual frequently experiences early signs or symptoms such as lightheadedness, nausea, the feeling of being extremely hot or cold (accompanied by sweating), ringing in the ears, an uncomfortable feeling in the heart, fuzzy ...
A frequent type of syncope, termed vasovagal syncope is originated by intense cardioinhibition, mediated by a sudden vagal reflex, that causes transitory cardiac arrest by asystole and/or transient total atrioventricular block. [1] [2] It is known as “Vaso-vagal Syncope”, “Neurocardiogenic Syncope” or “Neurally-mediated Reflex Syncope ...
Rates are highest between the ages of 10–30 years old. This is likely because of the high rates of vasovagal syncope in the young adult population. Older adults are more likely to have orthostatic or cardiac syncope. Syncope affects about three to six out of every thousand people each year. [1] It is more common in older people and females. [7]
These physiological changes limit blood flow to the brain and can promote pre-syncope (lightheadedness, feelings of faintness) and syncope (fainting): [6] categorized in this instance as vasovagal fainting. [1] This second, fainting phase is not common to other phobias. [3]
The most common stimulus is a painful event. The child turns pale (as opposed to blue) and loses consciousness with little if any crying. The EEG is also normal, and there is no postictal phase, nor incontinence. The child is usually alert within minutes. There may be a relationship with adulthood syncope. [4] Complicated breath-holding spells
Such cardiovascular instability is exacerbated by hypoxia, or treatment with endotracheal or endobronchial suction used to prevent pulmonary aspiration. [3] Neurogenic shock is a potentially devastating complication, leading to organ dysfunction and death if not promptly recognized and treated. [2]
The San Francisco Syncope Rule (SFSR) is a rule for evaluating the risk of adverse outcomes in patients presenting with fainting or syncope. The mnemonic for features of the rule is CHESS: • C - History of congestive heart failure • H - Hematocrit < 30% • E - Abnormal ECG • S - Shortness of breath • S - Triage systolic blood pressure < 90
These findings reverse the more commonly held beliefs about the cause-and-effect pattern of needle phobics with vasovagal syncope. Although most phobias are dangerous to some degree, needle phobia is one of the few that actually kill. In cases of severe phobia, the drop in blood pressure caused by the vasovagal shock reflex may cause death.