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Evaluation of Ventricular Regional Function in Coronary Heart Disease with Quantitative Tissue Velocity Imaging

Author: ZhangYong
Tutor: TangHaiQin
School: Anhui Medical University,
Course: Geriatrics
Keywords: Coronary heart disease Quantitative tissue velocity imaging technology Doppler
CLC: R541.4
Type: Master's thesis
Year: 2008
Downloads: 22
Quote: 0
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Abstract


Objective: quantitative tissue velocity imaging technology (QTVI) is non-invasive, quantitative analysis of cardiac systolic and diastolic regional myocardial movement speed of the new method. In this study, QTVI determination of myocardial wall motion speed of the corresponding segments of the coronary arteries in patients with coronary heart disease, and evaluation of regional myocardial systolic and diastolic function to explore the patients with coronary heart disease segment myocardial velocity indicators and coronary CT / coronary angiography lesion corresponding relations and QTVI technology with conventional echocardiography compared QTVI technology in the early diagnosis of coronary heart disease in patients with myocardial ischemia. Methods: 38 cases of hospitalized patients with coronary heart disease, coronary CT coronary angiography confirmed coronary stenosis ≥ 50%, a total of 59 vascular lesions. Left anterior descending artery (LAD) lesions in 22 cases, 19 cases of the circumflex artery (LCX) lesions, 18 cases of the right coronary artery (RCA) lesions. The healthy control group (20 cases). All patients with coronary artery disease undergoing coronary CT or coronary angiography were performed before the ordinary ultrasound (including 2D, M-mode and anatomical M-mode) the check and myocardial quantitative tissue velocity imaging (QTVI) check, measure and record the various parameter values, Compare difference between the group and the normal group, the parameters of coronary heart disease. Results: Compared with the healthy control group, CHD group lesion corresponding myocardial segments wall late diastolic myocardial velocities (Va) no significant difference, no significant decrease in the side wall of the right ventricular systolic peak velocity (Vs). Left ventricular peak systolic movement speed (Vs), early diastolic myocardial velocity (Ve) and Ve / Va were significantly lower (p <0.05). Ordinary ultrasound echocardiography detected 38 cases of patients with coronary heart disease results show normal in 11 cases, 29% of the total number of cases, patients over tissue velocity imaging the ventricular segment Ve Ve / Va and left ventricular Vs significantly reduce . Conclusion: QTVI of myocardial velocities Vs, Ve and Ve / Va indicators can intuitively quantitative left ventricular ischemic myocardial systolic and diastolic function abnormalities, and vascular lesions in patients with coronary heart disease, there is a good correlation can be used for early diagnosis of myocardial ischemia in patients with coronary heart disease. 2 QTVI recognized in quantitative and early myocardial motion abnormalities range than traditional ultrasound technology, to provide the multiple quantitative analysis indicators, to avoid the subjective factors. Significantly decreased 3 RCA lesions in patients with right ventricular Ve, Ve / Va ratio inverted Vs no significant change, by Ve Ve / Va indicators quantitative evaluation of coronary artery disease in patients with right ventricular myocardial dysfunction.

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CLC: > Medicine, health > Internal Medicine > Heart, blood vessels ( circulatory ) disease > Heart disease > Coronary arteries ( atherosclerosis ),heart disease (CHD)
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