YANG Pan, GE Zhixiang, LIU Fei, et al. Clinical value of echocardiography in evaluating cardiac synchronization in patients with left ventricular false tendons[J]. Journal of Clinical Ultrasound in Medicine, 2020,22(1):6-9.
YANG Pan, GE Zhixiang, LIU Fei, et al. Clinical value of echocardiography in evaluating cardiac synchronization in patients with left ventricular false tendons[J]. Journal of Clinical Ultrasound in Medicine, 2020,22(1):6-9. DOI: 10.16245/j.cnki.issn1008-6978.2020.01.002.
ObjectiveTo explore the changes of cardiac synchronization and the relationship between cardiac synchronization and left ventricular false tendons(LVFT)by echocardiography.MethodsA taotal of 173 patients with LVFT confirmed by echocardiography(LVFT group)and 150 healthy volunteers without LVFT matched by sex and age(control group)were selected.The sizes
connection modes and direction variations of the patient’s LVFT were recorded by two-dimensional echocardiography.The synchronization of left atrioventricular
interventricular and left ventricular in two groups were evaluated with the ratio of left ventricular diastolic filling time to synchronous R-R interval(LVDFT/RR)
the difference between time before aortic ejection and time before pulmonary ejection(T2-T1)and the standard deviation of time to minimum systolic volume in left ventricle 16 segments(TMSV16-SD)
which all measured by pulse Doppler and real-time three-dimensional echocardiography. Multiple linear regression was used to analyze the correlation between LVFT morphological characteristics and synchronizationindexes.ResultsThere were statistically significant differences in different LVFT connection modes and direction variations(P=0.01
0.001).There was statistically significant difference between LVFT group and control group in left ventricular synchronization index TMSV16-SD(P<0.001)
but no statistically significant differences in left atrioventricular synchronization indexLVDFT/RR andinterventricularsynchronizationindexT2-T1.Multiplelinearregressionshowedthattheconnectionmodeof LVFT was independently correlated with the left ventricular synchronization index TMSV16-SD(all P<0.05).ConclusionThe connectionmodeofLVFTisanimportantfactoraffectingleftventricularsynchronization