Abstract:
:The objective of this investigation was to determine the prevalence and clinical associations of systolic anterior motion (SAM) of the mitral chordae (chordal SAM) in patients without evidence of hypertrophic cardiomyopathy. Although SAM of the mitral valve is thought to be a specific marker of hypertrophic obstructive cardiomyopathy, little is known about the clinical significance of chordal SAM either as an isolated echocardiographic finding (ICSAM) or in patients with mitral valve prolapse (MVP). A retrospective search of the clinical echocardiographic database was made to identify studies demonstrating chordal SAM with no other echocardiographic features of hypertrophic cardiomyopathy. The prevalence of chordal SAM was also ascertained in a group of 97 normal control subjects. Clinical, demographic, and two-dimensional and Doppler echocardiographic characteristics were compared between patients with and without MVP. Chordal SAM was identified in 3.9 percent of clinical studies but was rarely seen in normal volunteers (1 percent). Of the 57 patients with chordal SAM, 21 had systemic or cardiovascular conditions other than MVP associated with SAM (including 7 with aortic insufficiency and 8 with secondary concentric left ventricular hypertrophy), 18 (32 percent) had MVP, and 19 (33 percent) had no associated cardiovascular or systemic condition. These 19 patients with ICSAM were similar to patients with MVP and SAM with respect to age (44 +/- 8 vs 41 +/- 17 years), blood pressure, left ventricular wall thickness, ejection fraction, left atrial size, degree of mitral insufficiency, and left ventricular outflow tract velocity. Indications for the echocardiographic studies were similar between the two groups (chest pain, syncope, arrhythmia, cardiac source of embolus, and suspected MVP), but more patients in the ICSAM group were men (16 of 19 vs 8 of 18; p < 0.05). In conclusion, patients with ICSAM and CSAM associated with MVP are virtually indistinguishable by clinical, demographic, or Doppler-echocardiographic features. The syndrome of ICSAM deserves further study as a potentially clinically significant echocardiographic variant of the floppy mitral valve/MVP syndrome.
journal_name
Am Heart Jjournal_title
American heart journalauthors
Pearson AC,Pasierski TJ,Orsinelli DA,Gray P,Huschart Kdoi
10.1016/s0002-8703(96)90282-3subject
Has Abstractpub_date
1996-04-01 00:00:00pages
748-53issue
4eissn
0002-8703issn
1097-6744pii
S0002-8703(96)90282-3journal_volume
131pub_type
杂志文章abstract::The resonant frequencies of five commonly used fluid-filled catheters connected to a solidstate microdisplacement pressure gauge were 18 to 33 per cent higher than those obtained with a conventional manometer. Four catheters had a flat amplitude response to 26 Hz. or more at the 20 per cent amplitude distortion level...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(75)90508-6
更新日期:1975-05-01 00:00:00
abstract::To investigate the mechanisms of restenosis and detect useful interventions to prevent it, reliable quantitative measurements must be evaluated. Coronary arteries of domestic and minipigs (n = 18) were mechanically injured by balloon overstretching and killed at different intervals (2 to 25 weeks) after quantitative a...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(93)90531-d
更新日期:1993-12-01 00:00:00
abstract:BACKGROUND:The aim of the study was to describe the incidence and consequences of minor surgery after drug-eluting stent (DES) implantation. METHODS:The Evaluation of Drug-Eluting Stents and Ischemic Events (EVENT) Registry prospectively enrolled unselected patients undergoing percutaneous coronary intervention at 47 ...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2010.09.028
更新日期:2011-02-01 00:00:00
abstract::Because of its unique ability to demonstrate the metabolic consequences of myocardial ischemia, positron emission tomography (PET) is extremely valuable in assessing myocardial viability. PET imaging can identify the myocardial segments that are likely to improve after revascularization and may be more sensitive and s...
journal_title:American heart journal
pub_type: 杂志文章,评审
doi:10.1016/0002-8703(91)90803-p
更新日期:1991-07-01 00:00:00
abstract::Several autoimmune diseases have been associated with increased frequencies of specific histocompatibility (HLA) antigens, particularly for the D (DR) locus, that may be linked to immune response genes. Rheumatic valvular heart disease (RHD) has been postulated to have autoimmune features, but HLA associations have no...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(86)90311-x
更新日期:1986-11-01 00:00:00
abstract:BACKGROUND:To evaluate the impact of adjunctive high-dose glucose-insulin-potassium (GIK) on ST-segment elevation resolution in patients with ST-segment elevation myocardial infarction (MI). METHODS:As part of a randomized controlled trial of GIK versus no GIK in patients treated with primary percutaneous coronary int...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2005.03.023
更新日期:2005-06-01 00:00:00
abstract::Late potentials have been shown to predict malignant ventricular arrhythmias and sudden cardiac death. To determine whether prolonged, strenuous activity is associated with the development of ventricular late potentials, signal-averaged electrocardiography was performed on 30 marathon runners before, immediately after...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(89)90010-0
更新日期:1989-12-01 00:00:00
abstract::Probucol, a new cholesterol-lowering agent, was administered to ambulatory outpatients representing several classes of hyperlipoproteinemia (HL) for two years without dietary restriction. In 32 patients with Type II HL and 12 with Type IIB HL, statistically significant reduction in mean serum cholesterol levels occurr...
journal_title:American heart journal
pub_type: 临床试验,杂志文章
doi:10.1016/0002-8703(78)90088-1
更新日期:1978-08-01 00:00:00
abstract:BACKGROUND:Anxiety is highly prevalent among patients with coronary heart disease (CHD), and there is growing evidence that high levels of anxiety are associated with worse prognosis. However, few studies have evaluated the efficacy of treating anxiety in CHD patients for reducing symptoms and improving clinical outcom...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2016.03.003
更新日期:2016-06-01 00:00:00
abstract:BACKGROUND:Despite significant attention to resuscitation care by hospitals, national data on trends in the incidence and survival of patients with inhospital cardiac arrest (IHCA) are limited. OBJECTIVE:To determine trends and hospital-level variation in the incidence and outcomes associated with IHCA. In exploratory...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2017.05.018
更新日期:2017-11-01 00:00:00
abstract::It has been shown that brief episodes of myocardial ischemia can render the heart more resistant to a prolonged subsequent ischemic episode. This phenomenon, called "preconditioning," has been described in human beings during coronary angioplasty with the use of clinical, electrocardiographic (ECG), or metabolic param...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(97)70200-x
更新日期:1997-04-01 00:00:00
abstract:BACKGROUND:Recent randomized clinical trials have suggested a benefit of an invasive management strategy in patients with acute coronary syndromes. However, the broader use and impact of the invasive management approach has not been established for patients with acute coronary syndromes beyond the relatively narrow pat...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1067/mhj.2002.122517
更新日期:2002-06-01 00:00:00
abstract::To test the feasibility of synchronized retroperfusion (SRP) as a support device of percutaneous transluminal coronary angioplasty (PTCA) for high-risk patients, 10 patients with left main trunk or near left main trunk obstruction underwent PTCA with SRP. An 8.5F retroperfusion catheter was inserted from the antecubit...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(93)90004-s
更新日期:1993-02-01 00:00:00
abstract::To evaluate the therapeutic efficacy of oral angiotensin-converting inhibition (ACE) with captopril in chronic normotensive congestive heart failure (CHF), acute and cardiocirculatory actions were determined by cardiac catheterization and forearm plethysmography, and ambulatory effects were assessed by echocardiograph...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(81)90379-3
更新日期:1981-01-01 00:00:00
abstract::Plasma cholesterol levels were measured in 15,892 participants of a cholesterol screening in Hartford, Connecticut. The screenees were typically health conscious as evidenced by the low prevalence of current cigarette smoking (12%). However, more than 25% of the men and 35% of the women over the age of 50 years had ch...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(89)90741-2
更新日期:1989-03-01 00:00:00
abstract::Stress has been identified as contributing to the development of cardiovascular disease. The pathophysiologic link between stress and disease still remains unclear. Because experimental stress testing in the laboratory permits the examination of the underlying mechanism for stress-induced blood pressure, analyses of c...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(88)90560-1
更新日期:1988-08-01 00:00:00
abstract:BACKGROUND:Female sex independently predicts bleeding risk after percutaneous coronary intervention (PCI). Bivalirudin is safer than abciximab plus heparin in patients with non-ST-segment elevation myocardial infarction (NSTEMI). Thus, a greater benefit of bivalirudin in women would be expected. METHODS:We performed a...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2012.12.021
更新日期:2013-04-01 00:00:00
abstract::Ambulatory ECG recordings were obtained from 313 consecutive, totally symptom-free male subjects on whom cardiac catheterization was subsequently performed for occupational reasons. These recordings were examined for ventricular ectopy and the results were studied in relation to the findings on selective coronary angi...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(89)90405-5
更新日期:1989-06-01 00:00:00
abstract:BACKGROUND:Diastolic dysfunction induced by ischemia may alter transmitral blood flow, but this reflects global ventricular function, and pseudonormalization may occur with increased preload. Tissue Doppler may assess regional diastolic function and is relatively load-independent, but limited data exist regarding its a...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1067/mhj.2002.123836
更新日期:2002-09-01 00:00:00
abstract:BACKGROUND:Single nucleotide polymorphisms of vitamin K epoxide reductase complex subunit 1 (VKORC1) was reported to have association with arterial vascular disease. We investigated whether single nucleotide polymorphism of VKORC1 +2255 is associated with clinical outcomes among patients who underwent drug-eluting sten...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2009.02.001
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Among patients receiving thrombolytic therapy for myocardial infarction, the outcome for those with a history of infarction is dramatically worse than for those with their first event. Methods And Results We performed a post hoc analysis of patients with a history of myocardial infarction enrolled in the Glo...
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.2000.106166
更新日期:2000-07-01 00:00:00
abstract:BACKGROUND:Aortopulmonary collaterals (APCs) are frequently observed before and after the Fontan procedure. However, the mechanism of the development of APCs is unknown. We hypothesized that one or several antiangiogenic and/or angiogenic growth factors might play a role in the development of APCs. METHODS:Eighty-five...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2007.03.009
更新日期:2007-06-01 00:00:00
abstract:BACKGROUND:Chronotropic incompetence and left ventricular (LV) dilatation have both been shown to be markers of an adverse cardiovascular prognosis. Chronotropic incompetence has been described in patients with symptomatic LV dilatation and dysfunction, but the effect of asymptomatic LV dilatation and hypertrophy on ex...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(99)70415-1
更新日期:1999-05-01 00:00:00
abstract:BACKGROUND:Patients with non-ST-elevation myocardial infarction (NSTEMI) and three-vessel or left main coronary disease (3VD/LMD) have a high risk of long-term mortality when treated with a medical management strategy (MMS) compared with revascularization. METHODS:We evaluated patterns of use and patient features acro...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2013.12.004
更新日期:2014-03-01 00:00:00
abstract::Twelve cirrhotic patients with portal hypertension and esophageal varices were treated with nadolol for 1 month, and the effects on renal and hepatic hemodynamics and function were studied. A significant decrease in cardiac output, portohepatic gradient, and effective hepatic blood flow was found, whereas mean arteria...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(84)90602-1
更新日期:1984-10-01 00:00:00
abstract::Right- and left-sided endocarditis are two distinct entities, both clinically and experimentally. As such, they require different clinical approaches. The accurate diagnosis of right-sided endocarditis rests largely on a high index of suspicion which is often raised in the case of an intravenous drug abuser with fever...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(86)90564-8
更新日期:1986-01-01 00:00:00
abstract::Studies on cardiac conduction disorders and pacemaker tachycardias are usually conducted in patients because the phenomenon of ventriculoatrial (retrograde) conduction resulting from ectopic beats and pacing the ventricles has only been reported in humans. This study was conducted to characterize the ventriculoatrial ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(84)90621-5
更新日期:1984-08-01 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::T-lymphocyte levels may adversely affect the clinical course and outcome of patients with acute myocardial infarction (AMI). To characterize the T-lymphocyte profile during AMI and to explore whether these cells play a detrimental role in the extent of myocardial insult, levels of T-lymphocyte subpopulations, free sol...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(94)90040-x
更新日期:1994-05-01 00:00:00
abstract:BACKGROUND:Only limited data from large randomized clinical trials have been published on the long-term performance of second-generation drug-eluting stents in bifurcation lesions. METHODS:We investigated in patients in the randomized TWENTE trial the long-term safety and efficacy of treating bifurcation lesions with ...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2014.10.011
更新日期:2015-01-01 00:00:00