left ventricular ejection time

例句：

1. 1. The doctor measured the left ventricular ejection time to determine the patient's heart function.
   医生测量了左心室射血时间来评估患者的心脏功能。
2. 2. The study found that a longer left ventricular ejection time was associated with an increased risk of heart failure.
   研究发现，左心室射血时间较长与患心脏病的风险增加有关。
3. 3. The patient's condition improved significantly after undergoing cardiac surgery, which likelyinvolved reducing the left ventricular ejection time.
   患者在接受心脏手术后状况明显改善，这可能包括减少左心室射血时间。