Assessment Of Right Ventricular Function In Patients With Atrial Septal Defect By Tissue Motion Annular Displacement And Color Kinesis

Objective: To explore the clinical value of tricuspid annular displacement(TAD) measured by tissue motion annual displacement (TMAD) techniquecombined with color kinesis (CK) in patients with atrial septal defect (ASD).Methods: Thirty patients with ASD enrolled as patient group weremeasured preoperatively (labeled as A group), a month after operation (labeledas B group) and three months after operation (labeled as C group); and thirtynormal individuals were enrolled as controlled group (labeled as N group). Theratio between the RV and LV (LV/RV), the inner diameter of main pulmonaryartery (MPA) and tricuspid blood flow velocity were measured bytwo-dimensional echocardiography. The transverse diameter at the level of thebasal and mi-segment of the right ventricle free wall as well as the longitudinaldiameter were measured by real time three-dimensional echocardiography. TheTAD at right ventricular free wall, septum, the mid-point and longitudinalshortening (recorded as T1, T2, Tm and Tm%) were measured by TMADtechnique using off-line QLab7.0software; and right ventricular ejectionfraction (RVEF) were calculated by using3DQ software.Results:(1) T1, T2, Tm and Tm%of A group were significantly lowerthan that of N group (P<0.1). T1, T2, Tm and Tm%of B group were lower thanthat of N group （p<0.05）, but higher than A group (p<0.05). T1, T2, Tm andTm%of C group closed to that of N group. The T2differences of A group, Bgroup and C group were obscure.(2) Tricuspid annular displacement of Ngroup measured by color kinesis displayed uniformly orange, yellow, green, cyan and blue in orders. By contrast, the colors of A group absented ordisplayed un uniformly. Gradually, the colors of B group and C group closed tothat of N group.(3)The parameters of TAD correlated positively with RVEF,r=0.81(T1),0.42(T2),0.84(Tm) and0.91(Tm%), especially in Tm and Tm%(p<0.01).Conclusion: T1, Tm and Tm%of patient group with ASD were significantlylower than that of N group (P<0.1). The colors of patient group absented ordisplayed un uniformly. The research confirms the application of tissue motionannual displacement combined with color kinesis apply to quantitativeevaluation right ventricular systolic function preoperative and postoperative...