男性,43岁,参加长跑过程中发生晕厥,心电图示"窦性停搏",为除外病态窦房结综合征,进行食管心脏电生理检查,以下哪项指标最有意义()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧