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Objective:To explore the application value of non-invasive pressure-strain loop (PSL) in evaluating left ventricular systolic function of young strength athletes with different heart rates.Methods:Thirty-five young wrestlers were collected randomly and divided into 2 groups according to the heart rate: group 1 (heart rate of 40-59 beats/min, n=20) and group 2 (heart rate of 60-80 beats/min, n=15). Thirty healthy young males were selected as the control group at the same period. Non-invasive PSL was used to obtain left ventricular global longitudinal strain (GLS), longitudinal peak strain dispersion (PSD), global myocardial work index (GWI), global constructive myocardial work (GCW), global wasted myocardial work (GWW) and global myocardial work efficiency (GWE) in three groups, and the differences between them were measured. Results:Compared with the control group, GWE in the athlete group 1 and 2 reduced, PSD, GWW were increased, and GWI, GCW in the athlete group 1 were decreased, and all differences were statistically significant (all P<0.05). Compared with the athlete group 1, PSD, GWI, GCW, GWW in the athlete group 2 increased and GWE was reduced (all P<0.05). Conclusions:PSL can quantitatively evaluate the left ventricular myocardial work of young strength athletes with different heart rates, and then assess the effect of heart rates on the left ventricular systolic function of athletes.
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Objective:To explore the application value of ultrasonic layer-specific strain technology in evaluating left ventricular systolic function in young male strength athletes.Methods:In October 2018, 30 professional young male wrestlers from Henan Provincial Heavy Sports Management Center (athlete group) and 30 healthy young males matched with age (control group) were randomly selected.Using traditional echocardiography combined with stratified strain technique, heart rate (HR), left ventricular end-diastolic diameter(LVDd), interventricular septal thickness on diastole(IVSTd), postwall thickness on diastole (PWTd), relative wall thickness (RWT), end diastolic volume index(EDVI), end systolic volume index (ESVI), ejection fraction (LVEF), stroke volume index (SVI), cardiac index (CI), spherical index (SPI), endocardial myocardial global longitudinal strain(GLSendo), mid-myocardial global longitudinal strain(GLSmid), epicardial myocardial global longitudinal strain(GLSepi), peak strain dispersion(PSD) and whole myocardial longitudinal strain cross-wall difference (ΔLS) were measured respectively. The differences between the two sets of data were analyzed.ROC curves were plotted to analyze and compare the stratified strain parameters performance to predict left ventricular systolic function or synchrony in athletes.Results:The values of LVDd, PWTd, IVSTd, RWT, SPI, EDVI, ESVI and SVI in athelete group were higher than those of the control group. And the values of HR, GLSendo, GLSmid, GLSepi and ΔLS were lower than those of the control group.The differences were statistically significant (all P<0.05). There was no significant difference in LVEF, CI and PSD between the two groups (all P>0.05). The areas under the ROC curve of GLSendo, GLSmid and GLSepi for athletes′ left ventricular systolic function were 0.753, 0.747 and 0.726, respectively, and the optimal cut-off values were -22.34%, -19.95%, -17.35%, respectively. Conclusions:Long-term high-intensity exercise can lead to subclinical changes in left ventricular systolic function, and ultrasonic layer-specific strain technology can more accurately and specifically evaluate left ventricular systolic dysfunction. Among the GLS parameters, GLSendo is the optimal parameter for testing the left ventricular systolic function of athletes.
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Objective To assess the left ventricular systolic function in young strength male athletes by three-dimensional speckle tracking echocardiography (3D-STE).Methods A total of 45 young strength male athletes (athlete group) and 30 healthy young men (control group)were enrolled.Traditional echocardiography combined with 3D-STE were applied for all the subjects to obtain heart rate (HR),left ventricular end-diastolic diameter (LVEDD),the thickness of interventricular septum (IVS) and posterior wall thickness (PWT),relative wall thickness (RWT),left ventricular end-diastolic volume (EDV),endsystolic volume (ESV),left ventricular ejection fraction(LVEF),stroke volume (SV),left ventricular mass (LVM),left ventricular global longitudinal strain (GLS),global circumferential strain (GCS),global area strain (GAS),global radial strain (GRS).Results There were a significant increase inLVEDD,IVS,PWT,RWT,EDV,ESV,SV,LVM and significant decrease in HR,GLS,GCS,GAS and GRS in athlete group compared with the control group (P ＜ 0.05).However,there was no significant difference in LVEF between two groups (P ＞0.05).Conclusions There are subclinical changes of left ventricular systolic functionin of young strength male athletes.3D-STE can accurately assess the changes,and provide reliable information for clinical assessment of athletes' heart function.
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Objective To explore the application value of real time three-dimensional echocardiography (RT-3DE) on right ventricular systolic function in patients with moderate and severe pulmonary hypertension (PH).Methods Twenty-five patients with moderate PH (group Ⅱ) and 25 patients with severe PH(group Ⅲ) were selected,30 normal cases were selected to be control group(group Ⅰ).Tricuspid annular systolic peak velocity (S'),right ventricular Tei index(RIMP),tricuspid annular planet systolic excursion(TAPSE) and right ventricular fractional area change(RVFAC) were measured by conventional ultrasound echocardiography.Right ventricular end diastolic volume (RVEDV),right ventricular end systolic volume (RVESV),right ventricular stroke volume (RVSV) and right ventricular ejection fraction (RVEF) were measured by RT-3DE.The correlation between all the parameters and pulmonary artery systolic blood pressure (PASP),and the correlation between RVEF and S',RIMP,TAPSE,RVFAC were analyzed respectively.Results The differences of RVEDV,RVESV,TAPSE,RVFAC in each group were all statistically significant (all P ＜0.01);RIMP,RVEF between group Ⅰ and group Ⅱ,as well as between group Ⅰ and group Ⅲ were statistically significant (all P ＜0.01);S',RVSV only between group Ⅰ and group Ⅲ was statistically significant (P ＜0.01).The correlation coefficients of RVEF and RIMP,S',TAPSE,RVFAC were-0.707,0.402,0.574,0.763,respectively (all P ＜ 0.01).The best parameters associated with RVEF in each group were RVFAC,RIMP,RVFAC,which correlation coefficients were 0.787,-0.679,0.744,respectively (all P ＜0.01).Conclusions RT-3DE is a objective and accurate method to evaluate the right ventricular volume and RVEF in patients with moderate and severe PH,and it can select out the sensitive indicators to evaluate those patients' right ventricular systolic function from conventional echocardiographic parameters,provide important reference value for clinical.