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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.
Reflex anoxic seizures are a particular type of anoxic seizure, most commonly seen in young children in whom an anoxic seizure or syncope is provoked or precipitated by a noxious stimulus (hence "reflex"). Various precipitants have been identified, but the most common is an unexpected bump to the head.
Syncope ((syncope ⓘ), commonly known as fainting or passing out, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. [1] It is caused by a decrease in blood flow to the brain , typically from low blood pressure . [ 1 ]
The “Cardioneuroablation” is a technique created in the nineties and patented in USA, aiming to eliminate the cardiac branch of vagal reflex in order to treat the neurocardiogenic syncope without pacemaker implantation. [6] [7] It is performed without surgery, by using radiofrequency catheter ablation with one-day hospital. [citation needed]
Syncope (phonology), the loss of one or more sounds, particularly an unstressed vowel, from the interior of a word; Syncopation, a musical effect caused by off-beat or otherwise unexpected rhythms; Syncopation (dance), or syncopated step, a step on an unstressed beat; Suspension, in music; Syncope, a genus of microhylidae frogs
Hanger reflex - reflex of unclear purpose that causes the head to rotate to the right when the top sides of the head are under pressure, named because it can be easily activated with a coat hanger; Hering–Breuer reflex — is a reflex triggered to prevent over-inflation of the lung
Reflex activation then results in systemic vasoconstriction below the spinal cord disruption. This peripheral arterial vasoconstriction and hypertension activates the baroreceptors . There is a resultant parasympathetic surge originating in the central nervous system which inhibits the sympathetic outflow.
In biology, a reflex, or reflex action, is an involuntary, unplanned sequence or action [1] and nearly instantaneous response to a stimulus. [2] [3] The simplest reflex is initiated by a stimulus, which activates an afferent nerve. The signal is then passed to a response neuron, which generates a response.