Reflex syncope (Q41448): Difference between revisions
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| description / pt-br | description / pt-br | ||
A síncope reflexa é uma perda transitória de consciência com recuperação espontânea e associada à perda do tônus postural. A síncope reflexa é a forma mais comum de síncope e pode ocorrer em indivíduos com função autonômica normal. Acredita-se que o mecanismo esteja relacionado ao acúmulo de sangue nas pernas, seguido pela redução no retorno do sangue ao coração, o que desencadeia um aumento do tônus simpático. Supõe-se que contrações cardíacas vigorosas com um ventrículo sub-preenchido causem perda reflexa do tônus simpático e vagotonia. | |||
| description / en | description / en | ||
Reflex syncope is a transient loss of consciousness with spontaneous recovery and associated with loss of postural tone. Reflex syncope is the most common form of syncope and can occur in individuals with normal autonomic function. The mechanism is believed to be related to blood pooling in the legs followed by reduction in blood return to the heart which triggers a sympathetic tone increase. Vigorous cardiac contractions with an underfilled ventricle are hypothesized to cause reflex loss of sympathetic tone and vagotonia. | |||
Revision as of 07:37, 13 August 2026
Reflex syncope is a transient loss of consciousness with spontaneous recovery and associated with loss of postural tone. Reflex syncope is the most common form of syncope and can occur in individuals with normal autonomic function. The mechanism is believed to be related to blood pooling in the legs followed by reduction in blood return to the heart which triggers a sympathetic tone increase. Vigorous cardiac contractions with an underfilled ventricle are hypothesized to cause reflex loss of sympathetic tone and vagotonia.
| Language | Label | Description | Also known as |
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| default for all languages | 8D89.0 |
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| English | Reflex syncope |
Reflex syncope is a transient loss of consciousness with spontaneous recovery and associated with loss of postural tone. Reflex syncope is the most common form of syncope and can occur in individuals with normal autonomic function. The mechanism is believed to be related to blood pooling in the legs followed by reduction in blood return to the heart which triggers a sympathetic tone increase. Vigorous cardiac contractions with an underfilled ventricle are hypothesized to cause reflex loss of sympathetic tone and vagotonia. |
