The test has been thought to prooke asoagal syncope by allowing enous pooling and decreased return to the heart, thus triggering the Bezold-Jarisch mechanism (1).

 
  • 该试验被认为通过导致静脉淤积并减少回心血量,因此触发Bezold-Jarisch机制,从而诱发血管迷走性晕厥。
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