regurgitant valve orifice area

例句：

1. 1. The doctor measured the patient's regurgitant valve orifice area to determine the cause of the heart failure.
   医生测量了患者的反流瓣口面积，以确定心力衰竭的原因。
2. 2. During surgery, the surgeon carefully removed the damaged valve to restore normal function.
   在手术中，外科医生小心地移除了受损的瓣膜，以恢复正常功能。
3. 3. The patient was advised to maintain a healthy diet and lifestyle to prevent further damage to the regurgitantvalve orifice area.
   患者被建议保持健康的饮食和生活方式，以防止进一步损害反流瓣口面积。