reflex syncope

(noun)

Involuntary fainting.

Related Terms

Examples of reflex syncope in the following topics:

  • Syncope

    • Syncope, the medical term for fainting, is a transient loss of consciousness.
    • There are two broad categories of syncope, cardiogenic or reflex, which underlie most forms of syncope.
    • Variants of reflex syncope often have characteristic histories, including precipitants and time course which are made evident by skilled history taking.
    • Other types include postural syncope (caused by a change in body posture), cardiac syncope (due to heart-related conditions), and neurological syncope (due to neurological conditions).
    • Recurrent syncope with complex associated symptoms called neurally mediated syncope.

  • Carotid Sinus Syncope and Massage

    • Massage of the carotid sinus, or carotid sinus massage, is used to diagnose carotid sinus syncope.
    • This condition is called carotid sinus syncope, and results in dramatic changes in heart rate or blood pressure.
    • Carotid sinus syncope sometimes accompanies convulsive seizures because of the intensity of the carotid sinus reflex when pressure builds in one or both carotid sinuses.

  • Syncopation in Pop/Rock Music

  • Reflexes and Diagnosis

    • A reflex action, also known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus.
    • Scientific use of the term "reflex" refers to a behavior that is mediated via the reflex arc; this does not apply to casual uses of the term "reflex".
    • Generally, decreased reflexes indicate a peripheral problem, and lively or exaggerated reflexes a central one.
    • While the reflexes above are stimulated mechanically, the term H-reflex refers to the analogous reflex stimulated electrically, and Tonic vibration reflex for those stimulated to vibration.
    • While 2+ is considered normal, some healthy individuals are hypo-reflexive and register all reflexes at 1+, while others are hyper-reflexive and register all reflexes at 3+.

  • Syncopation

    • A syncopation or syncopated rhythm is any rhythm that puts an emphasis on a beat, or a subdivision of a beat, that is not usually emphasized.
    • Syncopation is one way to liven things up.
    • Notice, however, that in other places in the music, the melody establishes the meter very strongly, so that the syncopations are easily heard to be syncopations.
    • If you want practice hearing syncopations, listen to some ragtime or jazz.
    • Syncopation can be added just by putting accents in unexpected places.

  • Vagus (X) Nerve

    • Afferent vagus nerve fibers that innervate the pharynx and back of the throat are responsible for the gag reflex.
    • Excessive activation of the vagal nerve during emotional stress can also cause vasovagal syncope due to a sudden drop in cardiac output, causing cerebral hypoperfusion.

  • Gastrointestinal Reflex Pathways

    • The digestive system functions via a system of long reflexes, short reflexes, and extrinsic reflexes from gastrointestinal (GI) peptides working together.
    • In addition, there are three overarching reflexes that control the movement, digestion, and defecation of food and food waste: the enterogastric reflex, the gastrocolic reflex, and the gastroileal reflex.
    • When this occurs, it is called a short reflex.
    • The gastrocolic reflex is the physiological reflex controlling the motility, or peristalsis, of the gastrointestinal tract.
    • The gastroileal reflex is a third type of gastrointestinal reflex.

  • Components of a Reflex Arc

    • A reflex arc defines the pathway by which a reflex travels—from the stimulus to sensory neuron to motor neuron to reflex muscle movement.
    • The path taken by the nerve impulses in a reflex is called a reflex arc.
    • There are two types of reflex arcs:the  autonomic reflex arc, affecting inner organs, and the somatic reflex arc, affecting muscles.
    • For example, the withdrawal reflex (nociceptive or flexor withdrawal reflex) is a spinal reflex intended to protect the body from damaging stimuli.
    • The path taken by the nerve impulses in a reflex is called a reflex arc.

  • Spinal Reflexes

    • Spinal reflexes include the stretch reflex, the Golgi tendon reflex, the crossed extensor reflex, and the withdrawal reflex.
    • Spinal reflexes include the stretch reflex, the Golgi tendon reflex, the crossed extensor reflex, and the withdrawal reflex.
    • This reflex has the shortest latency of all spinal reflexes.
    • Like the stretch reflex, the tendon reflex is ipsilateral.
    • The crossed extensor reflex is a withdrawal reflex.

  • Reflexive