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신미승,김봉령,정욱진,강웅철,한승환,안태훈,최인석,신익균,오규진,봉정민,문찬일 대한심장학회 2009 Korean Circulation Journal Vol.39 No.7
Background and Objectives: The purpose of the current study was to assess left atrial (LA) physiology in relation to associations between LA volume change and regional tissue velocities and strains, and to extend this information to patients with mitral stenosis (MS) or mitral regurgitation (MR). Subjects and Methods: Twenty-two healthy persons, 22 patients with moderate-to-severe MS, and 22 patients with moderate-to-severe MR were studied. Tissue velocities, strains, and time-volume curves of the LA were acquired using tissue Doppler imaging and 3-dimensional echocardiography. Results: In healthy controls, the maximal LA volume was negatively correlated with the posterior wall longitudinal systolic strain (r=-0.45, p=0.03). The time-to-maximal LA volume was positively correlated with the time-to-posterior wall longitudinal peak strain (r=0.46, p=0.03) and the time-tocircumferential peak strain (r=0.59, p=0.004). The LA active emptying fraction (LAactEF) was positively correlated with the posterior wall longitudinal peak systolic and late diastolic tissue velocities. In patients with MS, the maximal LA volume was negatively correlated with the posterior wall radial peak systolic velocity and the longitudinal late diastolic velocity. In patients with MS, the LAactEF had an additional positive correlation with the anterior wall longitudinal and circumferential systolic velocities, whereas the patients with MR had an additional positive correlation between the LAactEF and the lateral wall longitudinal peak strain as compared with the healthy cantrols. Conclusion: LA longitudinal and circumferential deformations are more related than radial deformation to determining LA volume and function. The LA of patients with MS revealed a greater pathologic physiology than those of patients with MR. Background and Objectives: The purpose of the current study was to assess left atrial (LA) physiology in relation to associations between LA volume change and regional tissue velocities and strains, and to extend this information to patients with mitral stenosis (MS) or mitral regurgitation (MR). Subjects and Methods: Twenty-two healthy persons, 22 patients with moderate-to-severe MS, and 22 patients with moderate-to-severe MR were studied. Tissue velocities, strains, and time-volume curves of the LA were acquired using tissue Doppler imaging and 3-dimensional echocardiography. Results: In healthy controls, the maximal LA volume was negatively correlated with the posterior wall longitudinal systolic strain (r=-0.45, p=0.03). The time-to-maximal LA volume was positively correlated with the time-to-posterior wall longitudinal peak strain (r=0.46, p=0.03) and the time-tocircumferential peak strain (r=0.59, p=0.004). The LA active emptying fraction (LAactEF) was positively correlated with the posterior wall longitudinal peak systolic and late diastolic tissue velocities. In patients with MS, the maximal LA volume was negatively correlated with the posterior wall radial peak systolic velocity and the longitudinal late diastolic velocity. In patients with MS, the LAactEF had an additional positive correlation with the anterior wall longitudinal and circumferential systolic velocities, whereas the patients with MR had an additional positive correlation between the LAactEF and the lateral wall longitudinal peak strain as compared with the healthy cantrols. Conclusion: LA longitudinal and circumferential deformations are more related than radial deformation to determining LA volume and function. The LA of patients with MS revealed a greater pathologic physiology than those of patients with MR.
신미승,구본권,김현주,강석민,최동훈,장양수,정남식 한국심초음파학회 2000 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.8 No.2
A 72-year-old man presented with incidentally found palpable abdominal mass of unknown duration. On admission, he had blood pressure of 120/80mmHg and pulse of 70 beats per minute. He consumed a pack of cigarettes per day for 45 years. He denied any prior chest pain episodes. The serum lipid profiles were within normal range. Electrocardiogram revealed sinus rhythm without ST-T wave change. Digital subtraction angiography revealed aneurysmal dilatation of both common iliac arteries to the proximal part of the external iliac arteries. Transthoracic echocardiography revealed normal left ventricular wall motion excepta pseu-doaneurysm at the apex (Fig. 1). Color Doppler (Fig. 2) and intravenous contrast echocardiography(Fig. 3) showed free blood flow communication through the neck of the pseudoaneurysm. Coronary angiography revealed no significant luminal narrowing of coronary arteries. Left ventriculogram showed an aneurysm at the apex (Fig. 4). During the period of 8 months follow-up, the patient did not have any event or complain any symptom.