T Cell Activation in Ischemic Heart Disease

BACKGROUND: It was recently shown that human atherosclerotic plaque contains large numbers of T lymphocytes : this indicates that immune and inflammatory mechanism may be important factors in the pathogenesis of atherosclerosis. By measuring the soluble interleukin 2 receptor(sIL-2R) level we can evaluate the activation of T lymphocyte. The purpose of this study is to evaluate relationship between T cell activation and ischemic heart disease by measuring the soluble interleukin 2 receptor (sIL-2R) level in patient with ischemic heart disease. METHOD: Seventy-two patients(40 males and 32 female, mean age : 56.5+/-9.9 years) who were taken coronary angiography were included in this study. Among them, 49 patients showed abnormal coronary angiographic findings and 23 patients showed normal coronary angiographic findings. Ten mililiters of arterial blood was drawn at the time of coronary angiography. The blood was allowed to coagulate and then the serum was removed and tested in duplicate for soluble interleukin 2 receptor (sIL-2R) level by ELISA. RESULTS: 1) The soluble interleukin 2 receptor (sIL-2R) level was significantly different between abnormal coronary angiographic findings and normal coronary angiographic findings (P 0.05), but showed increasing tendency with clinical severity. 3) According to numbers of involved coronary vessels, soluble interleukin 2 receptor (sIL-2R) level was not significantly different between single vessel disease group and multivessels disease groups (p > 0.05). CONCLUSION: T lymphocyte activation, as reflected in elevated soluble interlekin 2 receptor (sIL-2R) level, is frequent in patient with ischemic heart disease. In the further we will investigate relationship between clinical diagnosis of ischemic heart disease of the numbers of involved coronary vessels and T cell activation.

Transesophageal Echocardiography in the Detection of Intracardiac Source of Cerebral Emboli

BACKGROUND: Intracardiac pathology resulting in embloic phenomena is a well-recognized cause of cerebral ischemia and infarction. Recently, the use of transesophageal echocardiography(TEE) has gained wide acceptance because of its superior resolution of basal structures such as the left atrium, left atrial appendage, mitral valvular apparatus, atrial septum, and aorta. The purposes of this study are to evaluate the effectiveness of TEE for detection of intracardiac source of cerebral emboli. METHOD: From 1991 to 1995, 215 patients were included in this study. All patients underwent both transthoracic and transesophageal imaging with saline contrast administration and Doppler color flow imaging. The study group consisted of 132 men and 83 women with a mean age of 51 years(range 15-74). We also reviewed TEE result of all patients according to two groups, which were divided by the presence of clinical cardiac abnormalities. RESULT: 1) TEE identified a potential cardiac source of embolism in 43.7%(94 to 215) of the overall study group compared with only 3.7%(8 to 215) by TTE. 2) Success rate of TEE was 93.5%(201 to 215). 3) Abnormalities noted by TEE included 23 patients with LA spontaneous echo contrast, 20 patients with patient foramen ovale, 16 patients with aortic atheroma, 16 patients with LA thrombi, 8 patients with atrial septal aneurysm, 5 patients with aortic valve prolapse, 4 patients with mitral valve prolapse, and 2 patients with LV thrombi. 4) In the 62 patients with cardiac disease, TEE identified 16 patients with LA spontaneous echo contrast, 12 patients with LA thrombi, 2 patients with patent foramen ovale, 1 patient with aortic atheroma, 1 patient with atrial septal aneurysm and 1 patients with aortic valve prolapse. In the 152 patients with no cardiac disease, TEE identified 18 patients with patent foramen ovale, 15 patients with aortic atheroma, 7 patients with artial septal aneurysm, 7 patients with spontaneous echo contrast, 4 patients with aortic valve prolapse, 1 patient with mitral valve prolapse and 1 patient LA thrombi. CONCLUSION: TEE was very useful method in investigating potential intracardiac source of cerebral emboli. Thus, the use TEE combined with TTE in patients with unexplained stroke should be recommended.

Quantification of Large Pericardial Effusion by Two-Dimensional Echocardiography

BACKGROUND: The accurate information about the volume of pericardial effusion can assist in clinical decisions and has impartant prognostic value. In addition, accurate quantification of serial change in effusion volume is necessary in assessing pericardial disease and making a decision of immediate drainage. This study was performed to evaluate the efficacy of 2-D echocardiographic quantification of pericardial effusion. METHOD: The study populations are 22 patients with large pericardial effusion whose volume of effusion is confirmed by paracentesis or surgical drainage. Through the echocardiographic reviw, the volume of pericardial sac and heart was calculated by method of D'cruz and then, the effusion volume was derived as the difference of two volumes. Each echocardiographically calculated volume of pericardial effusion was compared with the measured volume drained percutaneously or surgically. RESULTS: The volume of pericardial effusion calculated echocardiographically was excellently correlated with the drained volume(r=0.90, p < 0.01). The echo-free space was well correlated with the volume of pericardial effusion in the anterior aspect of the heart(r=0.71, p < 0.01), but not in the posterior aspect. CONCLUSION: 2-D echocardiographic Quantification of pericardial effusion is simple and reliable method, and its clinical efficacy may be great.

The Characteristics of Primary Cardiac Tumors Occured in Korean People

OBJECTIVES: Primary cardiac tumors are rare, being found in approimately 1 in 10,000 to 33 in 1,000 routine autopsies in patients of all ages. The purpose of this study is to evaluate the status of primary cardiac tumor in Korea, Their clinical and pathological characteristics. We analysed our 13 cases of primary cardiac tumors confirmed by operative findings, and all cases which were published in several literatures. METHOD: Thirteen cases of primary cardiac tumors confirmed by pathologic findings from 1982 in keimyung university hospital, and 116 cases of published data from 1962 were reviewed their pathologic and clinical findings. RESULTS: One hundred and twenty nine cases were included in this study, The age was ranged from 15 dyas to 75 years old. 45 cases(35%) were male and 84(65%) were female. 119 cases(92.2%) were revealed benign tumor : 115 myxoma, 2 rhabdomyoma, 1 lipoma and 1 fibroma. 10 cases(7.8%) were malignant tumors : 4 angiosarcoma, 2 fibrous histiocytoma, 2 rhabdomyosarcoma, 2 fibrosarcoma. The most common site of benign tumor was left atrium, and of malignant tumor was right atrium. CONCLUSION: Most of primary cardiac tumors were benign. And left atrial myxoma was most common primary cardiac tumor. Angiosarcoma was most common malignant tumor, occured in right atrium most frequently.