Assessment Right Ventricular Systolic Function In Young Male Strength Athletes By Real-Time Three-Dimensional Echocardiography(RT-3DE)Combined With Two-Dimensional Speckle Tracking Echocardiography(2D-STE)

ObjectiveReal time three-dimensional echocardiography(RT-3DE)combined with two-dimensional speckle tracking technology(2D-STE)was used to quantitatively measure the right ventricular volume,ejection fraction,and overall longitudinal strain of the right ventricle wall of young male strength athletes.The clinical value of 2D-STE on the right ventricular systolic function of young male strength athletes,and to find a reliable index that can sensitively evaluate the right ventric.ular systolic function of young male strength athletes.MethodsA total of 30 Young Male Strength athletes(athlete group)and 30 healthy men(controls group)were selected.Generally:Measure and record the age,height,weight,systolic blood pressure,diastolic blood pressure,BS A,and heart rate.Routine echocardiography to obtain basic parameters of right heart:use M5S probe(frequency 2.0?4.0MHz)to measure right atrial left and right diameter(RA-D1),right atrial upper and lower diameter(RA-D2),right ventricular basal diameter(RV-D1),right ventricular middle diameter(RV-D2),right ventricular upper and lower diameter(RV-D3),parasternal long-axis right ventricular outflow tract(PLAX RVOT),parasternal short-axis right ventricular outflow tract(PSAX RVOT),pulmonary artery systolic pressure(PASP),tricuspid annular systolic displacement(TAPSE),right ventricular fractional area change(RVFAC),right ventricular myocardial performance index(RIMP)and tricuspid annular systolic peak velocity(S')separately.Real-time three-dimensional echocardiography to obtain right ventricular systolic function parameters:Use a 4V real-time three-dimensional ultrasound probe to acquire and store three-dimensional right ventricular motion models,and apply 4D Auto RVQ software for image post-processing.Final measured right ventricular end-diastolic volume(RVEDV),right ventricular end-systolic volume(RVESV),right ventricular stroke volume(RVSV),and right ventricular ejection fraction(RVEF)Two-Dimensional Speckle Tracking Echocardiography acquisition and data analysis:Switch to the M5S probe,continuous acquisition of 3 cycles of dynamic dy images of the right ventricular four-chamber cardiac section and stored.Import images into Echo PAC workstation storage,use " Q-Analysis" program,Select the"2D-Gain"key,Adjust the region of interest on the edge of Right ventricular endocardium manually,And the machine automatically calculates the Right ventricular globle longitudinal strain(RVGLS)then takes the absolute value.All parameters were compared between the two groups,the differences in right cardiac chamber size and right ventricular systolic function parameters were explored,and the correlations between RVGLS and RVFAC,RIMP,TAPSE,S' and RVEF were analyzed.And RVEF and RVGLS within and between groups Repeatability test were done.Results1.Comparison of the general conditions of the two groups of participants:Compared with the control group,the weight and body surface area increased,and the heart rate decreased of the athletes group,with statistically significant differences(P<0.05).There was no significant difference in age,height,systolic blood pressure and diastolic blood pressure between the two groups(P>0.05).2.Compared with the control group,the RA-D1,RA-D2,RV-D2,PLAX RVOT,PSAX RVOT,PASP,TAPSE,and RIMP increased in the athlete group,and S'decreased,and the differences were statistically significant(P<0.05).There were no significant differences in RV-D1,RV-D3,and RVFAC between the two groups(P>0.05).3.Comparison of RT-3DE parameters and RVGLS parameters between the two groups of participants:Compared with the control group,the RVEDV?RVESV?RVSV increased,and RVGLS decreased of the athletes group,with statistically significant differences(P<0.05).There was no significant difference in RV-EF between the two groups(P>0.05).4.Correlation analysis:The overall RVGLS,RRVAC,RIMP,TAPSE,and S 'all correlated well with RVEF(P<0.01),and the correlation coefficients were 0.775,0.657,-0.641,0.551,0.716;the normal control group RVGLS,RVGAC,RIMP,TAPSE,and S'and RVEF are all well correlated(P<0.01),and the correlation coefficients are 0.802,0.716,-0.706,0.662,0.660,respectively;the athlete group RVGLS,RRVAC,RIMP,TAPSE,and S' are all well correlated with RVEF(P<0.01),and the correlation coefficients were 0.765,0.674,-0.613,0.733,and 0.593,respectively.5.Repetitive research:The ICC between the RVEF and RVGLS groups was 0.857 and 0.924,and the ICC within the groups was 0.939 and 0.911,respectively,ICC were all>0.85(P<0.01).Conclusion1.Young male strength athletes who have participated in high-intensity training for a long time have increased right heart size,volume,and stroke volume,and reduced heart rate,that is,remodeling of the right heart structure.2.Young male strength athletes who have participated in high-intensity training for a long time have subclinical changes in right ventricular systolic function.2D-STE can sensitively detect this change and provide a reliable basis for clinical assessment of athletes' right ventricular function.3.The correlation between RVEF and RVGLS and conventional echocardiographic parameters measured by real-time three-dimensional echocardiography is:RVGLS,S',RVFAC,RIMP,TAPSE,and currently RVGLS is not popular in clinical practice,so S',RVFAC,Both RIMP and TAPSE can assess right ventricular systolic function in normal people and athletes.