常見例句雙語例句Objective To study the relations between left ventricular band and cardiac murmur or premature ventricular contraction and echocardiographic features.目的研究左心室條束的二維超聲心動(dòng)圖特征和左心室條束與心臟雜音及室性早搏的關(guān)系。During proecedure main cardiac arrhythmia found its expression in node tachycardia beat(81.8% ), ventricular premature contraction (45.5% ) and after procedure in sinus rate variation.術(shù)中主要的心律失常是交接區(qū)心動(dòng)過速（81.8％）及室上性期前收縮（45.5％），而術(shù)后主要是竇性心率增快。Objective To investigate the relationship between day and night regularity of ventricular premature contraction(VPC) without organic heart diseases, activity of autonomic nervous system and prognosis.目的了解兒童無器質(zhì)性心臟病室性早搏（VPC）的晝夜變化、與植物神經(jīng)功能紊亂的關(guān)系及預(yù)后。 返回 ventricular premature contraction