Abstract：
:The feasibility of using a flexible, steerable angioscope to perform coronary angioscopy before and after percutaneous coronary angioplasty was tested. The microangioscope fits through an 8F coronary angioplasty guiding catheter and contains a multifiber viewing bundle incorporated into the body of a 4.3F balloon catheter with a central lumen for distal flushing and guide-wire passage. Angioscopy was performed without complications 45 times in 24 patients, including 6 patients with stable and 18 with unstable angina. Circumferential visualization of the target lesion was successful in 20 (83%) of the 24 patients and improved with operator experience. Excellent visualization of the target lesion was achieved in 16 (94%) of the last 17 patients. Plaque, thrombus and dissection were among the abnormal findings in the 20 patients (4 with stable, 16 with unstable angina) in whom circumferential viewing of the target lesion was achieved. In four patients with restenosis after angioplasty, the lesion morphology was distinctly different from that of lesions in arteries without prior angioplasty. In patients with stable angina, no thrombus or dissection was seen by angiography or angioscopy before angioplasty. In patients with unstable angina, thrombus was detected more frequently by angioscopy than by angiography before angioplasty (8 versus 2 of 16) and after (15 versus 2 of 16) angioplasty. Intimal dissection was also seen much more frequently by angioscopy than by angiography before angioplasty (7 versus 0 of 16) and after angioplasty (16 versus 7 of 16). It is concluded that high resolution percutaneous coronary angioscopy can be performed safely in conjunction with balloon angioplasty. Further investigation is needed before this diagnostic tool can be applied clinically.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Ramee SR,White CJ,Collins TJ,Mesa JE,Murgo JPdoi
10.1016/0735-1097(91)90710-qsubject
Has Abstractpub_date
1991-01-01 00:00:00pages
100-5issue
1eissn
0735-1097issn
1558-3597pii
0735-1097(91)90710-Qjournal_volume
17pub_type
临床试验,杂志文章abstract：:Right ventricular end-diastolic and stroke volumes were calculated from orthogonal subcostal echocardiographic images in 24 neonates (mean weight +/- SD 3.4 +/- 0.4 kg) with pulmonary atresia (n = 18) or critical pulmonary stenosis (n = 6) and intact ventricular septum before and at an average of 5 days and then 19 da...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(92)90289-y
更新日期：1992-04-01 00:00:00
abstract：:Seventy adults who tested positive for human immunodeficiency virus (HIV) were prospectively studied with serial echocardiography to better define the prevalence and progression of cardiac disease in such patients. Fifty outpatients (Group A), including 44 with acquired immunodeficiency syndrome (AIDS) and 6 with AIDS...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/s0735-1097(10)80134-2
更新日期：1991-05-01 00:00:00
abstract：BACKGROUND:Residual aortic regurgitation (AR) following transcatheter aortic valve replacement (TAVR) is associated with greater mortality; yet, determining AR severity post-TAVR using Doppler echocardiography remains challenging. Cardiovascular magnetic resonance (CMR) is purported as a more accurate means of quantify...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jacc.2016.05.059
更新日期：2016-08-09 00:00:00
abstract：OBJECTIVES:This study sought to evaluate the diagnostic performance of multiparametric cardiovascular magnetic resonance (CMR) for detecting cardiac allograft vasculopathy (CAV) using contemporary invasive epicardial artery and microvascular assessment techniques as reference standards, and to compare the performance o...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jacc.2013.07.119
更新日期：2014-03-04 00:00:00
abstract：OBJECTIVES:The aim of this study was to determine whether patients with ventricular arrhythmias in the absence of coronary artery disease also have abnormalities in sympathetic innervation. BACKGROUND:We have previously shown by cardiac sympathetic scintigraphy using iodine-123-metaiodobenzylguanidine (I-123-MIBG) tha...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(93)90541-8
更新日期：1993-11-01 00:00:00
abstract：:As a clinical entity atrioventricular (AV) block due to hypothyroidism is rare. Such a case induced by hypothyroidism complicating long-term therapy with amiodarone in a 45 year old woman with pre-excitation is presented. Electrophysiologic data obtained before and during thyroxine replacement therapy showed that hypo...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/s0735-1097(86)80279-0
更新日期：1986-01-01 00:00:00
abstract：OBJECTIVES:This study sought to examine, in vivo, the shape and position of atheroma in the proximal left anterior descending coronary artery. BACKGROUND:The prevalence, shape and location of atheromas involving the proximal left anterior descending artery have implications regarding the role of disturbed shear forces...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(95)00551-x
更新日期：1996-03-15 00:00:00
abstract：OBJECTIVES:We sought to elucidate the clinical factors related to the development of no-reflow phenomenon after successful coronary reperfusion in patients with an acute myocardial infarction (AMI). BACKGROUND:Myocardial contrast echocardiography revealed that the no-reflow phenomenon is observed in some patients with...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/s0735-1097(01)01405-x
更新日期：2001-08-01 00:00:00
abstract：OBJECTIVES:This study was designed to evaluate possible interactions between digital mobile telephones and implanted pacemakers. BACKGROUND:Electromagnetic fields may interfere with normal pacemaker function. Development of bipolar sensing leads and modern noise filtering techniques have lessened this problem. However...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(96)00031-9
更新日期：1996-05-01 00:00:00
abstract：:A 2 year old boy with ventricular inversion and normal ventriculoarterial connection is described. Associated cardiac lesions included single atrium, absence of the coronary sinus, bilateral superior venae cavae, absence of the hepatic segment of the inferior vena cava with azygos and hemiazygos continuation, right ao...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/s0735-1097(84)80331-9
更新日期：1984-07-01 00:00:00
abstract：BACKGROUND:In the months after acute myocardial infarction (MI), risk for acute atherothrombotic events in nonculprit arteries increases several fold. OBJECTIVES:This study investigated whether sustained proinflammatory and prothrombotic endothelial alterations occur in remote vessels after MI. METHODS:Wild-type mice...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/j.jacc.2018.06.044
更新日期：2018-08-28 00:00:00
abstract：OBJECTIVES:The aim of this research was to describe N-terminal part of the pro-B-type natriuretic peptide (NT-proBNP) levels over time in non-ST-segment elevation acute coronary syndromes (NSTEACS), to elucidate factors associated with changes of NT-proBNP levels, and to examine association with long-term mortality. B...
journal_title：Journal of the American College of Cardiology
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1016/j.jacc.2004.10.057
更新日期：2005-02-15 00:00:00
abstract：OBJECTIVES:The aim of this study was to evaluate myocardial blood flow regulation in collateral-dependent myocardium of patients with coronary artery disease. BACKGROUND:Despite great clinical relevance, perfusion correlates of collateral circulation in humans have rarely been estimated by quantitative methods at rest...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(95)00209-M
更新日期：1995-09-01 00:00:00
abstract：:Several studies in the prethrombolytic era on the treatment of acute myocardial infarction identified selected variables from the patient's history, physical examination, chest roentgenogram and electrocardiogram that could be used to estimate mortality in patients with evolving infarction. To extend such assessment t...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(90)90579-e
更新日期：1990-08-01 00:00:00
abstract：OBJECTIVES:We sought to develop and validate a risk score combining both clinical and dobutamine echocardiographic (DbE) features in 4890 patients who underwent DbE at three expert laboratories and were followed for death or myocardial infarction for up to five years. BACKGROUND:In contrast to exercise scores, no scor...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jacc.2004.02.040
更新日期：2004-06-02 00:00:00
abstract：OBJECTIVES:The purpose of this study was to assess trends in endothelial coverage and recovery among leading polymer-based drug-eluting stents (DES). BACKGROUND:Autopsy studies of human U.S. Food and Drug Administration (FDA)-approved DES implanted coronary arteries suggest that complications of late stent thrombosis ...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/j.jacc.2008.04.030
更新日期：2008-07-29 00:00:00
abstract：OBJECTIVES:We tested the hypothesis that enalaprilat induces preconditioning (PC)-mimetic actions in patients with stable coronary artery disease. BACKGROUND:Angiotensin-converting enzyme (ACE) inhibitors increase the bioavailability of bradykinin, which induces cardiac PC. METHODS:Twenty-two patients undergoing coro...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jacc.2007.01.060
更新日期：2007-04-17 00:00:00
abstract：OBJECTIVES:To address the safety and efficacy of drug-eluting stents (DES) in the treatment of intermediate lesions, we performed a pooled analysis of four randomized DES versus bare-metal stent (BMS) trials and assessed outcomes among patients with intermediate lesions. BACKGROUND:Before the introduction of DES, inte...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,meta分析
doi：10.1016/j.jacc.2006.01.068
更新日期：2006-06-06 00:00:00
abstract：OBJECTIVE:We sought to evaluate the vena contracta width (VCW) measured using color Doppler as an index of severity of tricuspid regurgitation (TR). BACKGROUND:The VCW is a reliable measure of mitral and aortic regurgitation, but its value in measuring TR is uncertain. METHODS:In 71 consecutive patients with TR, the ...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/s0735-1097(00)00762-2
更新日期：2000-08-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to determine the clinical correlates of PR-segment depression among consecutive asymptomatic patients with pericardial effusion (PE) detected by routine echocardiography. BACKGROUND:Pericardial effusion is a relatively common finding in clinical practice, but not many studies h...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/s0735-1097(02)01889-2
更新日期：2002-06-19 00:00:00
abstract：:In a series of 24 consecutive patients referred to the echocardiography laboratory because of suspected patent foramen ovale, contrast two-dimensional and M-mode echocardiographic studies were performed during normal breathing and during two provocative tests: the Valsalva maneuver and cough. A right to left shunt was...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/s0735-1097(84)80106-0
更新日期：1984-09-01 00:00:00
abstract：OBJECTIVES:Percutaneous balloon valvotomy was studied retrospectively in newborns with critical pulmonary valve stenosis or atresia to assess its potential role as an alternative therapy to operation. BACKGROUND:Severe right ventricular outflow tract obstructions are life-threatening conditions requiring prostaglandin...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(95)00369-X
更新日期：1995-12-01 00:00:00
abstract：OBJECTIVES:This study sought to determine the long-term outcome of adult patients undergoing percutaneous balloon aortic valvuloplasty. BACKGROUND:Percutaneous balloon aortic valvuloplasty has been offered as an alternative to aortic valve replacement for selected patients with valvular aortic stenosis. Although ballo...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(95)00363-0
更新日期：1995-11-15 00:00:00
abstract：OBJECTIVES:This study was designed to determine whether blood thrombogenicity is related to chronic glycemic control in type 2 diabetes mellitus (T2DM). BACKGROUND:Type 2 diabetes mellitus is associated with accelerated atherosclerosis and a high rate of arterial thrombotic complications. Whether increased blood throm...
journal_title：Journal of the American College of Cardiology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0735-1097(01)01555-8
更新日期：2001-11-01 00:00:00
abstract：OBJECTIVES:This study examined whether stimulation of adenosine receptors before ischemia enhances myocardial resistance to stunning in vivo. BACKGROUND:We previously demonstrated the attenuation of myocardial stunning by ischemic preconditioning through adenosine receptor activation in rabbits. METHODS:1) To confirm...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(95)00412-2
更新日期：1996-01-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to investigate the appropriateness of stenting a functionally nonsignificant stenosis. BACKGROUND:Percutaneous coronary intervention (PCI) of an intermediate stenosis without evidence of ischemia is often performed, but its benefit is unproven. Coronary pressure-derived fractio...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.jacc.2007.01.087
更新日期：2007-05-29 00:00:00
abstract：OBJECTIVES:This study sought to examine whether plasma brain natriuretic peptide levels can predict prognosis after myocardial infarction. BACKGROUND:It has been suggested that concentrations of plasma brain natriuretic peptide reflect left ventricular function. Although the prognosis after myocardial infarction depen...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/0735-1097(96)00067-8
更新日期：1996-06-01 00:00:00
abstract：:Using contrast-enhanced computed tomography, the effects of hyperosmolar mannitol and methylprednisolone on experimentally produced myocardial infarcts were evaluated serially over the course of approximately 1 month. Infarct size, initial perfusion defect (jeopardized segment) and noninfarcted muscle mass were determ...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,收录出版
doi：10.1016/s0735-1097(85)80047-4
更新日期：1985-02-01 00:00:00
abstract：OBJECTIVES:This study compared and contrasted the randomized trials of directional atherectomy and coronary angioplasty for de novo native coronary artery lesions. BACKGROUND:The results of two randomized trials, the Coronary Angioplasty Versus Excisional Atherectomy Trial (CAVEAT) and the Canadian Coronary Atherectom...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章,评审
doi：10.1016/0735-1097(94)90300-x
更新日期：1994-08-01 00:00:00
abstract：OBJECTIVES:This study aimed to identify the genetic defect in a family with idiopathic ventricular fibrillation (IVF) manifesting in childhood and adolescence. BACKGROUND:Although sudden cardiac death in the young is rare, it frequently presents as the first clinical manifestation of an underlying inherited arrhythmia...
journal_title：Journal of the American College of Cardiology
pub_type： 杂志文章
doi：10.1016/j.jacc.2013.07.091
更新日期：2014-01-28 00:00:00
