Assessment of left atrial function using tissue motion annual displacement of mitral valve in patients with coronary slow flow
10.13929/j.issn.1003-3289.2020.05.011
- VernacularTitle: 组织二尖瓣环位移评价冠状动脉慢血流患者左心房功能
- Author:
Jun LI
1
Author Information
1. Department of Cardiovascular Ultrasound, the First Hospital of China Medical University
- Publication Type:Journal Article
- Keywords:
Atrial function, left;
Blood flow velocity;
Coronary;
Echocardiography;
Mitral valve;
Tissue motion annual displacement of the mitral valve
- From:
Chinese Journal of Medical Imaging Technology
2020;36(5):691-695
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To explore the value of tissue motion annual displacement of the mitral valve (TMAD) for assessment of left atrial function in patients with coronary slow flow (CSF). Methods: Routine echocardiography was performed in 44 CSF patients (CSF group) and 42 patients without CSF (control group),and Left atrial ejection fraction (LAEF), left atrial passive ejection fraction (LAPEF) and active ejection fraction (LAAEF) were calculated with Simpson method. Then left atrial filling period displacement (TMAD_D), passive emptying period displacement (TMAD_P) and active emptying period displacement (TAMD_S) were assessed using TMAD. Results: Compared with control group, LAEF and LAAEF decreased, so did TMAD_D and TAMD_S in CSF group (all P<0.01). TMAD_D and TAMD_S were negatively correlated with mean thrombolysis in myocardial infarction frame count (TFC) of coronary artery in CSF group(r=-0.31, -0.36, both P<0.01). Conclusion: In CSF patients, left atrial reservoir and pump function were damaged, which become worse with the decreasing velocity of coronary flow. TMAD is reliable and feasible for evaluating left atrial function in patients with CSF, therefore providing important evidences for clinical treatment and prognosis.
