Abstract:
:The stent delivery system (SDS) is a sheath-covered Palmaz-Schatz stent mounted on a 3.0, 3.5, or 4.0 mm compliant polyethylene balloon catheter; the balloon resists maximal inflation pressures of 5.7, 6.2, or 6.0 atm, respectively. It is postulated that these pressures are too low to obtain optimal stent deployment. Because optimal stent deployment is a prerequisite for optimal short- and long-term outcome, we performed an intravascular ultrasound study to the mode of stent deployment after delivery with the SDS and after high-pressure dilatations with low-compliant, oversized balloon catheters. In 23 patients an intravascular ultrasound study (30 MHz, 4.3F transducer) was performed to the geometry of 29 stents immediately after delivery with the SDS and after successive high-pressure inflations with low-compliant balloons. After delivery with the SDS (3.3 +/- 0.4 mm), stent diameter was 3.0 +/- 0.4 mm. After high-pressure dilatations (12.4 +/- 1.4 atm) with low-compliant balloons (3.9 +/- 0.5 mm), stent diameter increased to 3.4 +/- 0.4 mm (p < 0.001). Only 8 (28%) stents were completely and symmetrically expanded to the corresponding reference diameter with good apposition after delivery with the SDS. Diameter of incomplete deployed stents (n = 16) was 2.8 +/- 0.3 mm. After high-pressure dilatations with low-compliant balloons (3.9 +/- 0.5 mm), diameter increased to 3.4 +/- 0.4 mm (p < 0.001). Now 20 (69%) stents (p = 0.004) became completely and symmetrically expanded to a diameter corresponding to the reference diameter. In conclusion, most stents are suboptimally deployed after delivery with the stent delivery system.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Am Heart Jjournal_title
American heart journalauthors
Kiemeneij F,Laarman G,Slagboom Tdoi
10.1016/0002-8703(95)90308-9subject
Has Abstractpub_date
1995-04-01 00:00:00pages
638-44issue
4eissn
0002-8703issn
1097-6744pii
0002-8703(95)90308-9journal_volume
129pub_type
杂志文章abstract:UNLABELLED:Antiarrhythmic agents enhance maintenance of sinus rhythm (SR) after direct current cardioversion (DCC) for atrial fibrillation but there are few comparative trials. BACKGROUND:The aims of the study were (1) to establish whether patients successfully cardioverted to SR are more likely to stay in SR over 6 m...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2005.09.009
更新日期:2006-04-01 00:00:00
abstract::Percutaneous transluminal coronary angioplasty (PTCA) was performed in 110 consecutive patients (111 vessels) with chronically occluded coronary arteries and was successful in 69 patients (69 vessels). Successful initial PTCA was related to the extent of coronary artery disease, the morphology of the proximal surface ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(94)90503-7
更新日期:1994-01-01 00:00:00
abstract:BACKGROUND:Balloon inflation during coronary angioplasty results in shear stress-induced vessel wall injury with development of restenosis. This randomized trial compared the impact of two different balloon inflation strategies (slow versus fast) on restenosis after coronary angioplasty. METHODS:Two hundred seven pati...
journal_title:American heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0002-8703(98)70290-x
更新日期:1998-04-01 00:00:00
abstract::Fenoldopam mesylate (SK&F 82526-J) is a novel benzazepine derivative. It has selective agonist activity at post-junctional (DA1) vascular dopaminergic receptors, which normally subserve renal artery vasodilation. Previous studies in normal subjects and in patients with hypertension indicate that fenoldopam increases r...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(88)90620-5
更新日期:1988-08-01 00:00:00
abstract:BACKGROUND:The relationship of changes in weight to outcomes in patients after myocardial infarction (MI) is controversial. METHODS:From the ENRICHD trial data, we assessed weight change, and the associations of baseline weight and change at follow-up with outcomes and interactions between psychosocial factors. RESUL...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2007.10.026
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:Transcatheter foramen ovale closure (TPC) has emerged as a potential treatment option for patients with cryptogenic strokes and persistent foramen ovale (PFO). However, previous randomized controlled trials could hardly demonstrate any benefit compared to medical treatment (Med-Tx). Recently new data have be...
journal_title:American heart journal
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.ahj.2018.03.025
更新日期:2018-07-01 00:00:00
abstract::Repair of coarctation of the aorta may not prevent the subsequent development of elevated systemic blood pressure at rest or with exercise. The correlates of late postoperative resting systolic blood pressure and maximal exercise systolic blood pressure levels were investigated in a retrospective study of 42 patients ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(87)90277-8
更新日期:1987-02-01 00:00:00
abstract::The acute hemodynamic and electrophysiologic effects of flecainide in tachycardia-induced ventricular dysfunction were investigated using an animal model. Seven swine were initially (CON) evaluated by echocardiography and then by right heart catheterization and provocative electrical ventricular stimulation both befor...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(91)90018-d
更新日期:1991-06-01 00:00:00
abstract:BACKGROUND:Our purpose was to study the effects of atrial natriuretic peptide (ANP) on cardiorenal functions when it is used to manage patients with heart failure who are receiving an angiotensin-converting enzyme inhibitor (ACEi) or in acute saline solution loading. METHODS:Seventeen patients with mild to moderate he...
journal_title:American heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1067/mhj.2001.112782
更新日期:2001-03-01 00:00:00
abstract::The hemodynamic, electrocardiographic, and metabolic responses of dogs with acute myocardial ischemia to intravenous administration of fructose-1,6-diphosphate (FDP) were assessed. Analysis of the results (compared to dextrose control) revealed evidence of major improvement of LVEDP and cardiac output, significant dec...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(80)90228-8
更新日期:1980-11-01 00:00:00
abstract:BACKGROUND:The objective was to report recent trends in the incidence, adoption of evidence-based treatment, and clinical outcomes for first-time hospitalization for acute myocardial infarction. METHODS:This is a large retrospective population-based cohort study using medical administrative data (International Classif...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2013.08.026
更新日期:2013-11-01 00:00:00
abstract:BACKGROUND:Device-detected subclinical atrial fibrillation (AF) refers to infrequent, short-lasting, asymptomatic AF that is detected only with long-term continuous monitoring. Subclinical AF is common and associated with an increased risk of stroke; however, the risk of stroke with subclinical AF is lower than for cli...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.ahj.2017.04.008
更新日期:2017-07-01 00:00:00
abstract:BACKGROUND:The outpatient prognostic assessment of coronary artery disease (CAD) by exercise electrocardiography has limitations, including the feasibility of the test and its low positive predictive value in several clinical conditions. In the current study we investigated the safety, feasibility, and prognostic value...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1067/mhj.2001.113997
更新日期:2001-04-01 00:00:00
abstract:BACKGROUND:Under the hypothesis that the G-308A polymorphism in the promoter region of the tumor necrosis factor alpha gene might increase tumor necrosis factor alpha expression, several investigations have been performed to examine the influence of the -308A allele on the risk of cardiovascular events. The results of ...
journal_title:American heart journal
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.ahj.2007.02.031
更新日期:2007-05-01 00:00:00
abstract::Therapeutics involves the careful balance between treatment disadvantages and advantages--the so-called risk-benefit ratio. Even after 20 years beta-blockers must be selected carefully to suit the patient's needs. This review examines several problems associated with beta-blockade. Generally, beta1-cardioselectivity i...
journal_title:American heart journal
pub_type: 杂志文章,评审
doi:10.1016/0002-8703(88)90130-5
更新日期:1988-11-01 00:00:00
abstract::The long-term efficacy and safety of flecainide (100 to 200 mg twice a day) were evaluated in 21 patients with high-grade, chronic ventricular arrhythmias who responded to and tolerated flecainide at a preliminary evaluation (200 mg, single oral dose). Antiarrhythmic response was evaluated at 3 days and 3, 6, 12, 18, ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(89)90404-3
更新日期:1989-06-01 00:00:00
abstract:AIMS:In adults with coarctation of the aorta (CoA), hypertension (HTN) is a common long-term complication. We investigated the prevalence of HTN and analyzed factors associated with HTN. METHODS AND RESULTS:In the national register for congenital heart disease, 653 adults with repaired CoA were identified (mean age 36...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2016.07.012
更新日期:2016-11-01 00:00:00
abstract:OBJECTIVES:To define the incidence and cumulative risk of atrial fibrillation (AF) in a population-based cohort of whites and African Americans. BACKGROUND:African-Americans reportedly have a lower risk of AF than whites despite their higher exposure to AF risk factors. However, precise estimates of AF incidence in Af...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2009.05.010
更新日期:2009-07-01 00:00:00
abstract::Atherosclerotic coronary artery disease is a serious clinical problem. Clinicians dealing with patients can make a diagnosis of coronary disease in several ways. Unfortunately all too often the diagnosis is made via sudden death or acute myocardial infarction. At other times the diagnosis is made by evaluation of pati...
journal_title:American heart journal
pub_type: 杂志文章,评审
doi:10.1016/0002-8703(92)91039-4
更新日期:1992-05-01 00:00:00
abstract::The development of a group of calcium channel blockers that prolong the QT interval has raised interest in their possible proarrhythmic potential. In animal experiments lidoflazine has no observed arrhythmogenic potential and no antiarrhythmic potential in a model sensitive to the antiarrhythmic properties of both con...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(85)90628-3
更新日期:1985-02-01 00:00:00
abstract::The effects of captopril (CPT), an oral angiotensin-converting enzyme (ACE) inhibitor, on systemic failure (CHF). In 15 patients, CPT decreased mean arterial pressure from 75 +/- 3 to 60 +/- 3 mm Hg associated with a 16% increase in cardiac output, a 24% reduction in systemic vascular resistance, and a 36% decrease in...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(82)90052-7
更新日期:1982-11-01 00:00:00
abstract:BACKGROUND:Angiotensin-converting enzyme inhibitors have been shown to attenuate adverse remodeling after acute myocardial infarction (AMI), and the same has been suggested for angiotensin II type 1 receptor antagonists in animal models. Therefore the aim of the study was to compare the effects of losartan and captopri...
journal_title:American heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/j.ahj.2003.10.031
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND:This study was designed to investigate the efficacy of alteplase double-bolus dosing compared with the front-loaded 90-minute infusion regimen in patients with acute myocardial infarction. Recent pilot studies have suggested that bolus dosing may provide improved efficacy in establishing early, complete, and...
journal_title:American heart journal
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0002-8703(98)70024-9
更新日期:1998-10-01 00:00:00
abstract:BACKGROUND:A substantial percentage of patients have undiagnosed diabetes. We investigated the demographic characteristics and cardiometabolic profiles of subjects with undiagnosed diabetes. METHODS:A cross-sectional study with nationally representative samples of 25490 subjects aged ≥ 20 years from the KHNANES 2008 t...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2015.07.024
更新日期:2015-10-01 00:00:00
abstract::Thallium-201 redistribution pattern after exercise was related to rest and exercise left ventricular regional and global function, measured by radionuclide ventriculography, in 61 patients, 50 with coronary artery disease (CAD). Sixteen patients had exclusively transient thallium defects, suggesting ischemia: in this ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(81)90608-6
更新日期:1981-06-01 00:00:00
abstract:BACKGROUND:A simple approach is the predominant strategy for the percutaneous coronary intervention of bifurcation lesions. Performing side branch (SB) predilation in this context is currently a matter of controversy. In this study, we assess the efficacy of SB predilatation before a provisional T-stent strategy for bi...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.ahj.2014.05.014
更新日期:2014-09-01 00:00:00
abstract::Characteristics of color-coded Doppler imaging combined with two-dimensional and M-mode echocardiography in six patients with systolic-diastolic murmurs are reported. PDA, congenital absence of pulmonary valve leaflets, ventricular septal defect and aortic regurgitation, two ruptured aneurysms of sinus of Valsalva, an...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(87)90551-5
更新日期:1987-12-01 00:00:00
abstract::New postoperative electrocardiographic Q waves have been described in eight of 40 per cent of patients undergoing bypass grafting for coronary artery disease. Various theories have been proposed to explain these new Q waves. Correlations of new Q waves to vein bypass occlusion, prolonged pump time or aortic cross-clam...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(78)90233-8
更新日期:1978-04-01 00:00:00
abstract:BACKGROUND:Dyspnea is a complex system with multiple etiologies, including myocardial ischemia ("anginal equivalent"). Few studies have examined the utility of stress testing to detect coronary artery disease in this setting. The purpose of this study was to examine the prevalence, severity, and prognostic value of per...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2006.03.002
更新日期:2006-09-01 00:00:00
abstract::The efficacy of aspirin to prevent ischemic cardiovascular disease has received considerable attention recently. To determine the prevalence of aspirin use for cardiovascular disease prevention, the Minnesota Heart Survey examined population-based samples of Twin Cities' adults in 1981 to 82 and 1985 to 86. Over the 4...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(88)90344-4
更新日期:1988-09-01 00:00:00