Methods The left ventricular ejection fraction (LVEF) ,end - diastolic volume (EDV) and end - systolic volume (ESV) in autologous rhythm were collected by the GSPECT before implantation of pacemaker ,and at follow-up (4.6-1. 5months) in 27 patients.是什么意思_Methods The left ventricular ejection fraction (LVEF) ,end - diastolic volume (EDV) and end - systolic volume (ESV) in autologous rhythm were collected by the GSPECT before implantation of pacemaker ,and at follow-up (4.6-1. 5months) in 27 patients.在线翻译_英语_读音_用法_例句