女性,54岁。风湿性心脏病20年。查体:胸骨右缘第2肋间可触及收缩期震颤。该患者心脏瓣膜存在的问题是()
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