Study population
Among 72 patients who had CRT implantation were reviewed. 30 of them who
had another indication for transeosephageal echocardiography ( E.g.
grading mitral regurgitation, trombus search etc.) and moderate to
severe mitral regurgitaion were included to the study.
Patients with rheumatic mitral valve disease, severe annular
calcifications, mitral valve prolapse and a history of mitral valve
repair or replacement and those with inadequate acoustic windows were
excluded from the study. Informed consent was obtained from the patients
and approval from Clinical Investigation Ethics Committee in accordance
with principles of Helsinki Declaration.