Study Of Left Ventricular False Tendons By Using Echocardiography

Objective: To investigate the relationship among left ventricular false tendons(LVFT) and abnormal ECG (premature ventricular systolic, left ventricular high voltage and T wave inversion) and non-organic precardial systolic murmur by using Echocardiography. To analyze the influence of LVFT's number, length, width and position type on abnormal ECG and precardial systolic murmur, discuss the clinical significance of LVFT. Meanwhile, evaluate the significance of LVFT diagnosis by Echocardiography.Methods: 115 cases of abnormal ECG(including 49 cases of premature ventricular systolic(PVS), 27 cases of left ventricular high voltage and 39 cases of T wave inversion) as well as 43 cases of non-organic precardial systolic murmur(SM) and randomized 97 cases of healthy people (control group) were all studied by Echocadiography. The incidence of LVFT and the factors of LVFT probably affecting these abnormal clinical features including number, length, width and position types (horizontal type and vertical type) were statistically analyzed between healthy people and abnormal patients. Furthermore, taking use of color Doppler flow imaging(CDFI) to observe the hemodynamics of LVFT patients.Results: There was a significant difference between PVS group as well as SM group and control group (P<0.05) in relevance ratio of LVFT, but no significant difference between left ventricular high voltage group, T wave inversion group and control group. The number of LVFT has no significant difference between abnormal groups and control group. There was no significant difference in lengths and widths between PVS group, high voltage group, SM group and control group (P>0.05). The lengths between LVFT group and control group was no statistical significance (P>0.05), but width between these two groups has significant difference (P<0.005). Position types plays an important role in distinguish abnormal group from control group (P<0.05). The horizontal type accounts for 60% in abnormal ECG patients, occupies 64% in SM patients and only 35% in healthy people.Conclusion : LVFT is associated with abnormal ECG and non-organic precardial SM. LVFT is an independent risk factor for PVS, and the position type of LVFT is a major factor for ECG abnormalities and precardial SM. Besides the position type, the width of LVFT also affects the presence of high voltage. Echocardiogrphy is a reliable means in diagnosing LVFT of living subjects, confirming its important properties as position types, length, width and taking an real-time observation in heyodynamics. Therefore, Echocardiography can provide significant foundations for clinical diagnoses and therapies of LVFT.