This 2019 focused update to the American Heart Association and American Red Cross first aid guidelines follows the completion of a systematic review of treatments for presyncope of vasovagal or orthostatic origin. This review was commissioned by the International Liaison Committee on Resuscitation and resulted in the development of an international summary statement of the International Liaison Committee on Resuscitation First Aid Task Force Consensus on Science With Treatment Recommendations. This focused update highlights the evidence supporting specific interventions for presyncope of orthostatic or vasovagal origin and recommends the use of physical counterpressure maneuvers. These maneuvers include the contraction of muscles of the body such as the legs, arms, abdomen, or neck, with the goal of elevating blood pressure and alleviating symptoms. Although lower-body counterpressure maneuvers are favored over upper-body counterpressure maneuvers, multiple methods can be beneficial, depending on the situation.

中文翻译：

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2019年美国心脏协会和美国红十字会重点急救更新：晕厥：美国心脏协会和美国红十字会急救指南的更新。

这是对美国心脏协会和美国红十字会急救指南的2019年重点更新，是在完成对血管迷走神经或体位性先天性晕厥治疗的系统评价后完成的。这项审查是由国际复苏联合委员会委托进行的，其结果是制定了国际复苏与医疗急救工作队科学与治疗建议共识国际摘要声明。这项重点更新强调了支持直立性或血管迷走性起源晕厥的特定干预措施的证据，并建议使用物理反压操作。这些动作包括腿部，手臂，腹部或颈部等身体肌肉的收缩，目的是提高血压和减轻症状。尽管与上身反压相比，下身反压策略更受青睐，但根据具体情况，多种方法可能会有所帮助。