presyncope

presyncope

美 　英

• 网络晕厥；晕厥前；晕厥前状态

例句

Intracardiac tumors or ball-valve thrombi can intermittently obstruct blood flow within the heart, producing presyncope or syncope.

心内肿瘤或球状样瓣膜血栓可间歇性阻断心内血流，引起晕厥先兆或晕厥。