Abstract:
BACKGROUND:We investigated whether diffuse coronary vasoconstriction induced by acetylcholine caused myocardial ischemia. METHODS:We studied 30 patients (40 coronary arteries) with spontaneous chest pain or equivocal studies on treadmill exercise testing and no significant coronary stenosis or previous myocardial infarction. During the acetylcholine provocation test, Doppler echocardiography was performed, and thallium-201 was injected intravenously for scintigraphy. We used Doppler echocardiography to measure the ratio of early-to-late peak mitral flow (E:A ratio). RESULTS:When acetylcholine was injected, the coronary arteries showed three different responses. Diffuse coronary vasoconstriction without chest pain or ischemic changes on the ECG was induced in 18 (45%) arteries and the E:A ratio decreased from 0.83 +/- 0.13 to 0.77 +/- 0.13 (P = 0.031). In 17 vessels (control arteries), the E:A ratio did not change significantly (from 0.88 +/- 0.15 to 0.88 +/- 0.18; P = 0.95). In five arteries, focal spasm was induced and the E:A ratio decreased from 0.83 +/- 0.18 to 0.66 +/- 0.13 (P = 0.043). Transient defects on thallium-201 scintigraphy were observed in the territory of eight (80%) arteries with diffuse vasoconstriction and in one (20%) control artery (P = 0.047). CONCLUSIONS:Diffuse coronary vasoconstriction induced by intracoronary acetylcholine can decrease the regional myocardial blood flow (as shown by thallium-201 scintigraphy) and can cause global left ventricular diastolic dysfunction (as shown by the results of Doppler echocardiography).
journal_name
Coron Artery Disjournal_title
Coronary artery diseaseauthors
Uzui H,Kondo M,Murayama T,Nishiue T,Tsubokawa A,Tanio H,Shimono Ysubject
Has Abstractpub_date
1995-06-01 00:00:00pages
489-96issue
6eissn
0954-6928issn
1473-5830journal_volume
6pub_type
杂志文章abstract:OBJECTIVE:Considerable evidence suggests that thyroid dysfunction, especially hypothyroidism, may lead to coronary artery disease (CAD). The aim of this study is to investigate the effect of low serum levels of free triiodothyronine (FT3) on coronary artery calcification in outpatients with suspected CAD and the occurr...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000095
更新日期:2014-08-01 00:00:00
abstract:BACKGROUND:Biomarker expression can predict subsequent cardiovascular events. The goal of this study was to determine the pattern of expression in blood of a broad array of cytokines and growth factors taken 24-72 h after an ST elevation myocardial infarction (STEMI) involving the left anterior descending (LAD) coronar...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e328346b88d
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND:The optimal timing of angiography and percutaneous coronary intervention (PCI) in patients with non-ST elevation acute coronary syndromes (NSTEACS) remains uncertain. We sought to assess clinical characteristics and outcomes of patients in real-world contemporary practice who have early versus delayed PCI fo...
journal_title:Coronary artery disease
pub_type: 杂志文章,多中心研究
doi:10.1097/MCA.0000000000000374
更新日期:2016-08-01 00:00:00
abstract:OBJECTIVE:Current and former smokers are at an increased risk for lung cancer and cardiovascular disease (CVD). We investigated two methods of visual scoring of coronary artery calcium on lung cancer screening computed tomography (CT) to predict cardiovascular and all-cause mortality. PARTICIPANTS AND METHODS:Cases we...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000189
更新日期:2015-03-01 00:00:00
abstract:BACKGROUND:The degree of coronary collateral development is not same in every patient with similar degree of coronary stenosis. In animal studies monocyte chemoattractant protein-1 (MCP-1) has been found to be related to collateral vessel development. In this study we investigated whether a higher serum MCP-1 level is ...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e32833fd29b
更新日期:2010-12-01 00:00:00
abstract::Radiofrequency ablation of complex cardiac arrhythmias has undergone significant evolution in the past decade, with the development of technology enabling better anatomic and electrophysiologic mapping of abnormal cardiac tissue. In this paper, we will discuss the role of pre-procedural and post-procedural multidetect...
journal_title:Coronary artery disease
pub_type: 杂志文章,评审
doi:10.1097/00019501-200603000-00005
更新日期:2006-03-01 00:00:00
abstract:BACKGROUND:We examined the effects of rosuvastatin treatment on triglyceride levels and lipid measures in a parallel-group multicenter trial (4522IL/0035) in patients with hypertriglyceridemia (Fredrickson Type IIb or IV). METHODS:After a 6-week dietary lead-in period while on a National Cholesterol Education Program ...
journal_title:Coronary artery disease
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1097/00019501-200403000-00008
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND:Adiponectin and resistin, which have counteracting effects, are suggested to be associated with inflammation and atherosclerosis. The relationship between their levels and prognosis in high risk patients is, however, still unclear. The aim of this study was to evaluate the prognostic values of these adipokin...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e328318ecb0
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to describe the procedural characteristics, myocardial perfusion, and long-term outcomes in ST-elevation myocardial infarction patients with an ectatic infarct-related artery (IRA). PATIENTS AND METHODS:The retrospective analysis included 1270 consecutive ST-elevation myocardial inf...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000720
更新日期:2019-06-01 00:00:00
abstract:BACKGROUND:Thrombomodulin (TM) -33G/A and Ala455Val polymorphisms have been indicated to be correlated with the risk of coronary artery disease (CAD), but study results are still inclusive. Thus, a meta-analysis was carried out. MATERIALS AND METHODS:Databases including PubMed, Embase, CNKI, and Web of Science (ISI) w...
journal_title:Coronary artery disease
pub_type: 杂志文章,meta分析,评审
doi:10.1097/MCA.0000000000000161
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Several investigators have indirectly implicated oxygen free radicals in reperfusion injury following ischemia in the isolated rabbit heart. METHODS:A quantitative assessment of free-radical production during ischemia and reperfusion was made using electron paramagnetic resonance (EPR) spectroscopy. Serial ...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199312000-00009
更新日期:1993-12-01 00:00:00
abstract:BACKGROUND:Diabetic patients show an increased incidence of restenosis after coronary angioplasty than non-diabetic patients. This may be because of differences in the mechanism of lumen gain during coronary revascularization in this population cohort. DESIGN:This study analyses the mechanism of lumen gain during coro...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200208000-00003
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:There is increasing evidence that an open infarct-related artery results in increased electrical stability of the heart and that this effect is at least in part responsible for the favorable outcome of these patients. In the thrombolytic era the optimal strategy for risk stratification remains controversial....
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract:BACKGROUND:We have demonstrated previously that, when repeated reperfusion is performed after reocclusion, there is a decrease in the amount of myocardial salvage, despite early reperfusion. Treatment with nisoldipine induced a beneficial effect by reduction of infarct size in this experimental model. OBJECTIVE:To stu...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200003000-00013
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND:In this study, we examined the relationship between PAI-1 4G/5G polymorphism and patency of the infarct-related artery after thrombolysis in patients with ST-elevation myocardial infarction (STEMI). METHODS:Acute STEMI patients who received thrombolytic therapy within first 12 h were included in our study. ...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e3283576a77
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND:Single nucleotide polymorphisms (SNPs) are the most common source of genetic variation. Although microvascular pathology is associated with cardiovascular events, genetic phenotypes causing microvascular disease remain largely unknown. This study identifies sex-specific SNPs associated with coronary microvas...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000104
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND:The role of thrombolytic therapy (TT) and percutaneous coronary interventions (PCIs) in subgroups of patients with right ventricular infarction (RVI) has not been evaluated. METHODS AND RESULTS:We risk-stratified 302 patients with RVI into three subsets upon admission. Class A (n=197) comprised patients wit...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200202000-00008
更新日期:2002-02-01 00:00:00
abstract:AIMS:To evaluate the hypothesis that angiotensin-converting enzyme inhibitor therapy with ramipril reduces baseline levels of C-reactive protein in patients at high cardiovascular risk. METHODS:Secondary prevention patients were screened for eligibility and treated with ramipril for 6 month. Baseline and 6-month highl...
journal_title:Coronary artery disease
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/00019501-200510000-00002
更新日期:2005-11-01 00:00:00
abstract:BACKGROUND:17 beta-Estradiol and phytoestrogens are known to have beneficial effects on the cardiovascular systems of women. The exact mechanisms for how estrogens and phytoestrogens influence the cardiovascular system are not yet understood in detail. OBJECTIVE:The objective of this study was to investigate whether 1...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199912000-00010
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Second-generation drug-eluting stents (DESs) have shown higher safety and efficacy compared with first-generation DESs. This effect was achieved by improving biocompatibility using an interalia cobalt-chromium construction, thinner stent struts and biodegradable polymers. OBJECTIVES:To assess clinical and a...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000325
更新日期:2016-03-01 00:00:00
abstract:BACKGROUND:An association between early repolarization and ventricular fibrillation has recently been reported in patients with vasospastic angina (VSA). However, no studies have clarified whether the presence of early repolarization can predict VSA. METHODS:Participants comprised 286 patients (136 males) with clinica...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000983
更新日期:2020-11-13 00:00:00
abstract:BACKGROUND:K1K2Pu is a recombinant chimeric tissue-type and urokinase-type plasminogen activator consisting of the two kringle domains (K1 and K2) of human tissue-type plasminogen activator (t-PA) and the serine proteinase domain (Pu) of single-chain urokinase-type plasminogen activator (scu-PA). In experimental animal...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-199310000-00013
更新日期:1993-10-01 00:00:00
abstract:BACKGROUND:Heart rate variability (HRV) time and frequency domain indices are strong predictors of malignant arrhythmias and sudden cardiac death. The effect of various angiotensin-converting enzyme (ACE) inhibitors on HRV in patients with acute myocardial infarction (AMI) has not been studied. METHODS:Ninety patients...
journal_title:Coronary artery disease
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1997-08-01 00:00:00
abstract:BACKGROUND:The relationship between the serum levels of atherosclerosis-related apolipoprotein (apo) and the risk of coronary spastic angina remains unknown. METHODS AND RESULTS:This study consists of 111 patients who were admitted to our facility with the chief complaint of chest pain, in whom coronary angiography sh...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e328341baa9
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND:Percutaneous coronary intervention-induced myocardial infarction (PMI) has prognostic significance. Identifying patients at high risk for PMI is desirable as it may alter strategy and facilitate early preventative therapy. We therefore sought to establish whether preprocedural demographic, interventional (pl...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0000000000000582
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Although lipid-lowering therapy affects the luminal size of atherosclerotic coronary arteries the role of vascular remodeling has not been systematically studied. DESIGN/METHODS:Serial three-dimensional volumetric intravascular ultrasound (IVUS) was used to study remodeling, which was defined as changes in ...
journal_title:Coronary artery disease
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1097/00019501-200402000-00007
更新日期:2004-02-01 00:00:00
abstract:BACKGROUND:Coronary artery bypass grafting has been performed for a long period utilizing saphenous vein grafts, the fate of which might be crucial to prognosis following the operation. Metabolic syndrome, on the other hand, has become an increasingly important part of cardiovascular practice. We examined whether there...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200602000-00007
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:Cytomegalovirus (CMV), Chlamydia pneumoniae (C. pneumoniae), and Helicobacter pylori (H. pylori) have been implicated in atherosclerosis and restenosis after angioplasty. The patterns of distribution within coronary lesions and possible coinfections of these pathogens in the coronary vasculature had not prev...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/00019501-200102000-00001
更新日期:2001-02-01 00:00:00
abstract:OBJECTIVE:Atrial fibrillation is one of the most common arrhythmias associated with not only increased morbidity after coronary artery bypass grafting but also increased healthcare costs. Many factors are associated with atrial fibrillation onset after coronary artery bypass grafting. We prospectively examined which fa...
journal_title:Coronary artery disease
pub_type: 杂志文章
doi:10.1097/MCA.0b013e3281689a2c
更新日期:2007-08-01 00:00:00
abstract:BACKGROUND:The 2015 American College of Cardiology/American Heart Association update on primary percutaneous coronary intervention (PCI) in patients with ST-segment elevation myocardial infarction (STEMI) recommended PCI of the non-infarct-related artery at the time of primary PCI (class IIb recommendation). Despite ev...
journal_title:Coronary artery disease
pub_type: 杂志文章,meta分析
doi:10.1097/MCA.0000000000000578
更新日期:2018-03-01 00:00:00