1163: Submitral Aneurysm: Case Report

Abstracts unravel the role of conventional echocardiography to evaluate the LV remodelling following AMI. Methods: We enrolled 36 patients (Age,59⫾11yrs;Male,11) with first attack of AMI without cardiogenic shock or gross heart failure. Patients were classified on the basis of the timing of coronary intervention, and ST-T change. All patients underwent percutaneous coronary intervention (PCI). 2DE was performed just after admission, and at 3 months interval.Ejection fraction(EF),wall motion score index(WMSI),end diastolic volume index(EDVI),and end systolic volume index(ESVI)were calculated. Increasing EDVI by ⫽15% at 3 months was considered as remodeling. Results: Fifteen patients (42%) showed LV remodelling. Initial LVEDVI and LVESVI were significantly lower in patients with remodelling in comparison with patients without remodelling (p⬍0.0001; 95%CI,-22.73to-11.75 and p⬍0.001;95%CI,-13.27to-4.04 respectively). Patients with ST-segment elevation myocardial infarction(STEMI)showed higher rate of remodelling (45%)than that of NSTEMI(37.5%);On the other hand patients underwent emergency PCI showed higher rate of remodelling(47.82%)than those underwent delayed intervention (30.76%).WMSI and EF showed significant correlation with the LVEDVI at 3 months(r⫽ 0.53,p⬍0.0007;r⫽0.48,p⬍0.002 respectively). Conclusions: Conventional echocardiography is very convenient approach to evaluate the ongoing LV remodelling following successfully reperfused AMI. Moreover more emphasis should be given to patients with initially low LVEDVI so that preventive measures of can be taken within shortest possible time.

1162 Echocardiography and Cardioembolic Stroke Trang Quynh Huu Le, Medic Medical Center, Vietnam Vu Tuan Nguyen, Medic Medical Center, Pham Ngoc Thach Medical University, Vietnam Thai Kim Nguyen, Medic Medical Center, Vietnam Hai Thanh Phan, Medic Medical Center, Vietnam Background: Cardioembolic stroke accounts for approximately 1730% of all strokes. For recurrence, treatment and prognosis are different from other strokes, embolism of cardiac origin need to be diagnosed by imaging tools with evidence of cardiac sources of embolism. Transthoracic and transesophageal echocardiography have allowed clinicians to better characterize cardioembolic sources and to detect other potential etiologies of embolism of cardiac origin. Cardiogenic strokes may have symptoms and signs (atrial fibrillation, rheumatic heart disease, infective endocarditis...), but may not have any symptoms and signs even normal transthoracic echocardiography in some embolism of cardiac origin (patent foramen oval, atrial septal aneurysm...). Objective: By transthoracic and/or transesophageal echocardiography detection of cardioembolic sources in suspected cardiogenic stroke. Method: 61 patients (57 strokes and 4 transient ischemic attacks) were suspected cardiogenic embolism with exclusion of carotid stenosis and atheroma. Transthoracic echocardiography was performed first and transesophageal echocardiography followed latter in patients who had negative finding or did not explain on transthoracic echocardiography. Conclusion: Besides major risk cardiogenic sources, echocardiography can detect occult cardiac lesions of cardioembolic stroke. Transthoracic echocardiography has been showed to be effective in dectecting potential cardiac sources at ventricles. Combination of transthoracic and transesophageal echocardiography when necessary obtains more effective in detection of embolism of cardiac origin.

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1163 Submitral Aneurysm: Case Report Trang Quynh Huu Le, Medic Medical Center, Vietnam Vu Tuan Nguyen, Medic Medical Center, Pham Ngoc Thach Medical University, Vietnam Hai Thanh Phan, Medic Medical Center, Vietnam Huan Binh Bui, Medic Medical Center, Vietnam Submitral aneurysm is an aneurysm just beneath the posterior leaflet of the mitral valve due to a congenital weakness at the junction of the myocardium and the annulus. It is a rare cardiac disease, mostly seen in the black population. The first case was described in 1812 by Corvisart, so far the disease has been detected few hundred cases, majority in African blacks, Brazil, Indies, and sporadic cases in Europe and North America. We present a case report of submitral aneurysm in 29 year-old female diagnosed by echocardiography with color Doppler tissue imaging and confirmed by MSCT 64 slice with interesting images, not reported previously. 1164 Evaluation of Left Atrial Function by Velocity Vector Imaging in Patient with Rheumatic Mitral Stenosis Hua Hai Li, Sen Yat-Sun University, China Background: The left atrium function influence the whole heart function for it acted am important role in the left ventricles diastolic filling, about 15 to 25 percent of the whole left ventricles filling. Atrium function descending and reconstitution for long-term compensation and overload, stroke and thromboembolism increase obviously. So it has important and clinical meaning. Objective: To evaluate left atrial function by Velocity Vector Imaging(VVI) in patients with Rheumatic mitral stenosis(RMS). Methods: Thirty eight patients with RMS and 42 normal controls were studied with Velocity Vector Imaging analysis software. Peak systolic strain(S), systolic strain rate(SRs), early diastolic strain rate(SRe) and late diastolic strain rate(SRa) of each left atrial segments were measured, and also the SRa peak time delay. Results: Comparing to the controls group, the S, SRs and SRe of all segments were significantly lower(p⬍0.05). Except the base lateroaorta’s SRa, the other segments’ SRa were lower(p⬍0.05). In patients with atrial fibrillation(AF), 56 percent of the segments had no SRa, and 18.6 percent had irregular low amplitude movement at late diastole, while 25.4 percent had discernible positive peak. The base and middle inferior SRa of patients with AF were lower(p⬍0.05) than those of the patients with sinus rhythm. Comparing to the controls group, the SRa peak time delay of patients was longer, especially what of the patients with AF. Conclusion: The segmental and left atrial function of patients with RMS can be evaluated with Velocity Vector Imaging , Which provides a new approach for evaluating left atrial function in clinic. 1165 Speckle Tracking Imaging in Evaluation of Longitudinal and Radial Strains of Left Ventricular in Patients with Myocardial Infarction Jinguo Li, Union Hospital, China Lianglong Chen, Union Hospital, Fuzhou, Fujian, P R of China, China Objective: To assess longitudinal strain (LS) and radial strain(RS) of left ventricular and their relationship in patients with myocardial infarction (MI) by speckle tracking imaging (STI).