نتایج جستجو برای: coronary artery stenosis
تعداد نتایج: 346871 فیلتر نتایج به سال:
Background and Objective: Thrombolysis in myocardial infarction (TIMI) frame count (TFC) is an objective and quantitative index of coronary flow, and myocardial fractional flow reserve (FFR) is a lesion-specific index for epicardial coronary stenosis. Currently, FFR is the most valid tool for decision making in coronary interventions. However, it incurs relatively high costs and it is not reimb...
This study evaluated the relationship between the location of the most severe coronary artery stenosis and the subsequent acute myocardial infarction (AMI). Methods: Of 1590 patients who were admitted with a diagnosis of AMI, we identified 44 patients who had undergone previous myocardial perfusion SPECT. Thirty-one of these patients also had previous coronary angiography. The relationshi...
familial hypercholesterolemia (fh) is a hereditary dislipidemia. patients present with extremely high level of low-density lipoprotein cholesterol (ldl-c), which is due to mutation in the gene of ldl receptor. homozygous patients (hofh) whose incidence is 1 in 1.000.000 are at high risk of premature aortic valve stenosis, and coronary artery atherosclerosis. in homozygous individuals cardiovasc...
Background & Aim :Low density lipoprotein (LDL) particles are heterogenous with respect to their size,density and lipid composition. Among LDL particles ,the smaller and denser LDLs (small dense (sd)LDL) are believed to be atherogenic since these particles are taken up more easily by arterial wall.They are readily oxidized and have reduced affinity for LDL receptor and increased affinity for ...
Background : Oxidative stress is involved in the pathogenesis of many diseases. Conditions of oxidative stress and antioxidant imbalance plays a major role in the occurrence and development of atherosclerosis. The main objective of this study is to evaluate serum levels of malondialdehyde (MDA) as an index of lipid peroxidation and total antioxidant capacity (TAC) after consumption of ato...
diabetes mellitus (dm) is the most prevalent metabolic disease worldwide and is associated with coronary artery disease (cad). therefore it is very important to find a clue to diagnose the presence of cad as early as possible in dm patients. the aim of this study was to find any correlation between microalbuminuria (mau) and the severity of cad in patients with dm type 2. this was a cross secti...
the left ventricular aneurysm is one of the most significant complications of myocardial infarction and is defined as the expansion of the ventricular wall. the coronary artery aneurysm is characterized by an abnormal dilation of the localized portion of the coronary artery, and its main cause is atherosclerosis. we herein report an unusual case of coronary artery and left ventricular aneurysms...
background: the incidence of stroke after coronary artery bypass grafting (cabg) is between 0.9% and 6.7%, which significantly increases in-hospital and out-hospital costs. this study was designed to evaluate the prevalence of significant carotid stenosis and its risk factors in cabg. methods: in total, 2044 consecutive patients undergoing elective cabg were investigated through a pre-operative...
In this study, a method for non-invasive estimation of stress on the heart wall in the diastole phase is presented using ultrasound echocardiography and tissue Doppler imaging. The aim of this study was to evaluate the stress on the heart wall as a pre-diagnosis to identify people with coronary artery stenosis. 29 patients with stenosis of more than 70%, 30 patients with stenosis of 50 to 7...
Background: Considering the increasing incidence of coronary artery stenosis and its related complications, the importance of its etiology and inconsistent reports we aimed to determine the relationship between oxysterol, serum levels and severity of coronary atherosclerosis and effect of statins on oxysterol. Methods: A total of 85 patients referred to Taleghani Hospital, Tehran, Iran during...
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