Abstract:
:The effect of coronary angioplasty is usually evaluated on the basis of coronary angiography. However, angiographic images taken after angioplasty vary and the angiographic assessment of the therapeutic success of angioplasty is limited by local disruptions and dissections at the site of the dilatation, which are often difficult to detect by angiography. Intravascular ultrasound imaging is a new method for evaluation of coronary dimensions and wall morphology. Quantitative coronary angiographic analysis was compared with intravascular ultrasound assessment after balloon angioplasty in 42 patients. A diagnostic ultrasound imaging catheter was used during percutaneous transluminal coronary angioplasty (PTCA) to image both the lesion and the vessel segment just proximal (reference segment). Correlation between angiographic and ultrasound findings of vessel diameters and areas at reference segments was closer (r = 0.78, 0.66) than at the sites of PTCA (r = 0.54, 0.36). Dilated sites were analyzed in two subgroups segregated by degree of lumen eccentricity. An eccentric vessel lumen, defined as a circular shape factor of less than 0.92, was present at 25 of 42 sites. The correlation between angiographic and ultrasonic cross sectional area was not as close for these eccentric segments (r = 0.37). The difference in luminal areas between eccentric lumens estimated by edge detection and densitometry methods was 0.93 +/- 0.3 mm2, significantly greater than 0.54 +/- 0.31 mm2 in the circular group (p < 0.01). Luminal area after balloon angioplasty is clinically important to confirm by intravascular ultrasound especially in patients with large differences in measured values by quantitative coronary angiography.
journal_name
J Cardioljournal_title
Journal of cardiologyauthors
Yamashita Y,Takazawa K,Fujita M,Iketani T,Ibukiyama Csubject
Has Abstractpub_date
1994-11-01 00:00:00pages
423-31issue
6eissn
0914-5087issn
1876-4738journal_volume
24pub_type
杂志文章abstract::The incidence, mode of the onset and prognosis of primary coronary artery dissection in 1,445 consecutive patients with myocardial infarction undergoing coronary angiography were elucidated in the present study. Primary coronary artery dissection was observed in four patients (0.28%). The first case was a 28-year-old ...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1988-06-01 00:00:00
abstract::Functional mitral regurgitation (MR) has been traditionally known as secondary MR resulting from left ventricular (LV) dilatation and systolic dysfunction. However, deterioration of functional MR also relates to mitral annular (MA) dilatation. Furthermore, MA dilatation due to left atrial dilatation in patients with a...
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pub_type: 杂志文章,评审
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journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2008.09.001
更新日期:2009-06-01 00:00:00
abstract::Two cases of the hypoplastic right ventricle are reported. Patient 1: A five-year-old boy underwent cardiac catheterization 13 days after birth which revealed that the end-diastolic volume in the right ventricle was 2 ml. It was 20 ml at the age of two years and 40 ml at five years. Thus, the right ventricular hypopla...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1989-06-01 00:00:00
abstract:BACKGROUND:A better understanding of the epidemiology of pediatric out-of-hospital cardiac arrest (OHCA) occurring in nursery schools and kindergartens is indispensable to establish an evidence-based strategy for prevention and improved outcomes. This study aimed to describe the incidence, characteristics, and outcomes...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2020.06.003
更新日期:2020-12-01 00:00:00
abstract::A 47-year-old man with heterozygous familial hypercholesterolemia was followed up by coronary angiography for 9 years. During these 9 years, he experienced inferior myocardial infarction twice, at segment 1 of the right coronary artery. A coronary atherosclerotic lesion (50% stenosis) was also present at segment 6 of ...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1997-09-01 00:00:00
abstract::The effects of percutaneous transvenous mitral commissurotomy (PTMC) and open mitral commissurotomy (OMC) were evaluated in 18 patients who underwent PTMC and 16 patients who underwent OMC, before and within one month of the procedure, using two-dimensional and color Doppler echocardiography. There was no significant ...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract:BACKGROUND:It is said that the chronic outcomes of the two-stent technique for bifurcation lesions are inferior to that of cross-over single stenting. However, there are many cases where true bifurcations are difficult to treat by single stenting and, in particular, strategies for bifurcation lesions that are not left ...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2009.10.005
更新日期:2010-03-01 00:00:00
abstract::Spontaneous coronary artery dissection (SCAD) is a rare condition that most often presents as acute coronary syndrome or sudden cardiac death. Here we present the case of a young man of 25 years, who had remained asymptomatic in spite of SCAD. This case highlights the fact that spontaneous dissections can occur at a y...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2009.03.007
更新日期:2009-12-01 00:00:00
abstract:OBJECTIVES:To investigate the useful parameters of transthoracic echocardiography (TTE) for the diagnosis of stroke subtypes in patients with acute cerebral infarction. METHODS:One hundred and one acute ischemic stroke patients met all of the following criteria; > or = 50 years of age, normal sinus rhythm on admission...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:2006-08-01 00:00:00
abstract:BACKGROUND:The outcome of percutaneous coronary intervention (PCI) has been reported to be poor in hemodialysis (HD) patients even in the drug-eluting stent era. We have reported relatively poor outcomes after sirolimus-eluting stent implantation in the OUCH study. METHODS:The OUCH-TL study is a prospective, non-rando...
journal_title:Journal of cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jjcc.2015.03.008
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:Successful percutaneous coronary intervention (PCI) of the occluded infarct-related artery (IRA) in latecomers may improve long-term survival mainly by reducing left ventricular remodeling. It is not clear whether inhibition of renin-angiotensin system (RAS) brings additional better clinical outcomes in this...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2016.03.012
更新日期:2017-01-01 00:00:00
abstract::To investigate which time constant of isovolumic left ventricular pressure (LVP) decay is the most sensitive measure in acute myocardial ischemia, the time constant of isovolumic relaxation (IR) was calculated by two different models, the semilogarithmic model assuming a zero of LVP decline (TL) and an exponential mod...
journal_title:Journal of cardiology
pub_type: 临床试验,杂志文章
doi:
更新日期:1994-09-01 00:00:00
abstract::Ischemic preconditioning is an attenuation of myocardial ischemia by repeated brief coronary occlusions observed during percutaneous transluminal coronary angioplasty (PTCA). The effects of the time delay between balloon inflations during PTCA on ischemic preconditioning were investigated in 48 patients with chronic s...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1996-06-01 00:00:00
abstract::To assess right ventricular (RV) filling dynamics, RV inflow velocity patterns of pulsed Doppler echocardiograms and jugular pulse tracings were analyzed in 59 patients with various types of RV overloads and in 20 normal subjects. The patients were classified as (1) RV volume overload group (RVVO) consisting of 25 pat...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1988-12-01 00:00:00
abstract:BACKGROUND:Predictors of left ventricular reverse remodeling (LVRR) and differences in the time taken to achieve LVRR remain unclear. METHODS:We consecutively registered 129 patients with severe cardiomyopathy admitted with heart failure (HF). Patients were followed for a median of 778.0 days (IQ: 457.0, 1078.0). LVRR...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2015.07.021
更新日期:2016-07-01 00:00:00
abstract::Diabetes mellitus may be an independent risk factor for disturbance of cardiac function, but the detailed mechanism remains unclear. In the present study, histological examinations were carried out on 25 hearts from diabetes model rats as well as myocardial biopsy materials from patients with diabetes (n = 25). The me...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Two-dimensional (2D) echocardiography is routinely used in evaluating patients with mitral valve prolapse but requires a systematic examination for accurate assessment of the involved lesion of mitral valve prolapse, because the sonographer is required to mentally reconstruct two-dimensional images into thre...
journal_title:Journal of cardiology
pub_type: 临床试验,杂志文章
doi:
更新日期:2004-01-01 00:00:00
abstract::A 66-year-old woman had suffered from repeated heart failure beginning 6 years after mitral valve replacement. Left ventricular pseudoaneurysm was discovered 9 years after the replacement, while no evidence including histology was obtained for the cause of the pseudoaneurysm except the mitral valve replacement. The pr...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::This is a report of 3 cases of cardiac sarcoidosis. None of the 3 patients had other overt systemic involvement. Multinucleated giant cells and non-caseating epithelial cell granulomas with small lymphocytic infiltrations were detected in the endomyocardial biopsy specimen. Some focal left ventricular wall motion abno...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVES:Serum malondialdehyde-modified low-density lipoprotein(MDA-LDL) was measured as a marker of oxidative stress, and the changes in serum MDA-LDL compared in patients with acute myocardial infarction and stable angina pectoris treated by percutaneous transluminal coronary angioplasty (PTCA). METHODS:Forty-one ...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:2001-08-01 00:00:00
abstract:BACKGROUND:Global coronary flow reserve (g-CFR) provides powerful prognostic information. The relationship between g-CFR and the regional physiological indices of fractional flow reserve (FFR), coronary flow reserve (r-CFR), and the index of microcirculatory resistance remains undetermined. This study aimed to assess t...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2018.12.005
更新日期:2019-04-01 00:00:00
abstract:BACKGROUND:In Japan, the recent status of the mortality of atrial fibrillation (AF) patients is still unclear. METHODS AND RESULTS:We used a single-hospital based cohort database in an urban city (Tokyo) in Japan, including all the new visitors from 2004 to 2009 (n=13,228). The non-adjusted death rates of AF patients ...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2011.06.006
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Increased left ventricular (LV) myocardial stiffness may be associated with impaired LV hemodynamics and incident heart failure (HF). However, an indicator that estimates LV myocardial stiffness easily and non-invasively is lacking. The purpose of this study was to determine whether diastolic wall strain (DW...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2017.11.004
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Antiplatelet therapy is required after drug-eluting stent (DES) implantation, but bleeding events occur unexpectedly. We aimed to assess whether bleeding event predictors after 2nd generation DES (2nd DES) implantation differed by time after implantation. METHODS:We studied 1912 consecutive patients who und...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2016.05.017
更新日期:2017-04-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to assess the effect of eicosapentaenoic acid (EPA) on peri-procedural (type IVa) myocardial infarction (MI) following elective percutaneous coronary intervention (PCI). METHODS AND RESULTS:We analyzed data from 165 of 178 consecutive patients with stable angina pectoris who underw...
journal_title:Journal of cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.jjcc.2014.09.004
更新日期:2015-08-01 00:00:00
abstract:BACKGROUND:Ischemia-reperfusion causes endothelial injury and dysfunction in the infarct-related coronary artery (IRA). Using serial assessment of coronary endothelial vasomotor function and left ventriculography (LVG), this study prospectively investigated the clinical impact of endothelial vasomotor dysfunction in th...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2019.08.001
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVES:Conventional biomaterials are not viable, do not grow, and do not provide contractile effects in cardiac tissue. Foreign synthetic material may become thrombogenic or infected. The most recent cardiac constructs consist of biodegradable material which has the potential to solve these problems. However, dynam...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:2007-11-01 00:00:00
abstract::A 56-year-old man visited a doctor because of arrhythmia and a diagnosis of hypertrophic cardiomyopathy was made in 1990. On January 9th, 1997, when aged 63 years old, he visited another doctor because of paroxysmal atrial fibrillation tachycardia. Since his clinical symptoms did not ameliorate, he visited our hospita...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:
更新日期:1998-05-01 00:00:00
abstract:OBJECTIVE:Few data exist to evaluate the safety and efficacy of direct oral anticoagulants (DOACs) in patients with atrial fibrillation (AF) undergoing cryoballoon ablation (CB-A). This study is aimed to clarify the usefulness of DOACs in patients undergoing CB-A. METHODS:The patients (average age; 65.8±11.9 years old...
journal_title:Journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.jjcc.2016.04.009
更新日期:2017-01-01 00:00:00