Evaluation Of The Right Ventricular Function In Patients With Coronary Heart Disease By Ultrasound Speckle Tracking Imaging

ObjectiveTo explore the value of the evaluation of diastolic and systolic function inright ventricles in patients of coronary artrry by speckle tracking imaging, whichwill predict the pulmonary hypertension occurrence as soon as possible and bebenefit for clinical treatment and further prognosis.Methods30patients with myocardial infarction(MI group) and30patients withmyocardial ischemia and30healthy person (normal group) were enrolled. ByPhilips IE33color Doppler ultrasonic diagnostic apparatus. From apicalfour-chamber, section to take the dynamic map, conventional ultrasoundmeasure the following indicaters: mitral orifice（E/A)-MVE/A, tricuspid orifice（E/A)-TVE/A,LVEF,RVEF and right ventricular fractional area change(△A%).Analysis software enable Q-LAB, separately measure the RV longitudinal peaksystolic velocity(V),strain (S) and strain rate(SRs)，early diastolic strain rate(SRe)，late diastolic strain rate (SRa)and the rate of SRe/SRa were derived by2DS software． The peak myocardial systolic velocity(Sm)， isovolumecontraction time (IVCT)， myocardial contraction time (CTm)，early diastolicvelocity (Em)，1ate diastolic velocity (Am)，the rate of Em/Am，isovolumerelaxation time (IVRT)and myocardial deceleration time (DTm)were separatelymeasured by Tissue Doppler of RV lateral tricuspid annulus. Results1.Convertional measure value:Myocardial ischemia compared with thecontrol group: MVE/A;TVE/A,LVEF,RVEF,△A%were no statistical differencebetween the value of significance; myocardial infarction compared with thecontrol group: the above mentioned values decrease,the difference werestatistically significant(P<0.01);myocardial infarction compared with theMyocardial ischemia: LVEF,RVEF,△A%decrease, the difference werestatistically significant(P<0.05).2.Tissue Doppler measure value: Myocardial ischemia compared with thecontrol group: Em,Em/Am decrease, Am,DTm,IVRT increase,the differencewere statistically significant(P<0.05); Sm,CTm,IVCT were no statisticaldifference between the value of significance;myocardial infarction separatelycompared with Myocardial ischemia and the control group: the above mentionedvalues differences were statistically significant(P<0.05).3.Speckle tracking imaging measure value: Myocardial ischemia comparedwith the control group: S, SRs increase,SRe,SRe/SRa decrease, the differencewere statistically significant,V,SRa were no statistical difference between thevalue of significance; myocardial infarction separately compared withMyocardial ischemia and the control group: S,SRs,SRa increase,SRe,SRe/SRa,V decrease,the difference were statistically significant(P<0.05).Conclusions1. The diastolic and systolic function in right ventricles with patients of earlycoronary artery are injured.2.The convertional measure values of the diastolic and systolic function inright ventricles in patients of Myocardial ischemia have hardly differencescompared with control group,the part of tissue doppler measure values havedifferences,but not obvious,however,all of the speckle tracking imaging measurevalues have obvious differences,which were statistically significant. 3.The fuction of right ventricle’s abnormalities will be early examined byspeckle tracking imaging, which will predict the pulmonary hypertensionoccurrence as soon as possible and be benefit for deferring the right ventricles’prostration and improve further prognosis.4.Relevance analysis:myocardial infarction group,the measured indicators,right ventricular fractional area change(△A%)and the absolute of the rightventricular peak systolic into a positive correlation. right ventricular TVE/A andright ventricula（rSRe）into a positive correlation. right ventricula（rIVCT）and rightventricular peak systolic into a negative correlation. right ventricular Em/Am andright ventricular（SRe）into a positive correlation...