英语语法分析

Methods Transvenous MCE was performed before and after LAD stenosis in 12 dogs.

方法对12条犬于左前降支(LAD)狭窄前后行静脉心肌声学造影。

Objective To manufacture and observe the effect of a new type transvenous temporary pacing lead.

目的研制并观察新型经静脉临时起搏电极导管应用的效果。

Objective To evaluate the result and safety of transvenous temporary cardiac pacing in severe slow arrhythmia patients.

目的观察严重缓慢性心律失常进行紧急床边心脏临时起搏治疗的效果。