Undifferentiated Chordae Tendineae of the Mitral Valve: Large Cohort Study of a Rare Mitral Malformation.

ABSTRACT: Aims: This study aimed to investigate the pathology, classification, diagnosis, and surgical prognosis of UCMV. Methods and Results: Consecutive paediatric patients with ≥ moderate-severe mitral regurgitation (MR) and mitral stenosis (MS) were recruited between October 2016 and July 2020. UCMV was diagnosed and classified into three grades according to the involvement of chorda groups and MS presence or absence; other mitral lesions were included as controls. Of 207 eligible patients, 75 with UCMV (10.0 m [interquartile range (IQR): 6.0-21.5]) and 110 with other mitral lesions (16.0 m [IQR: 5.0-43.5]) were diagnosed using echocardiography and surgical exploration. The associated chorda groups of UCMV were confirmed to show high agreement between echocardiography and surgery (

SUBMITTER: Pang K 

PROVIDER: S-EPMC8353112 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature