Abstract:
:We compared the pauses that followed the spontaneous termination of supraventricular tachyarrhythmias with the pauses that followed the cessation of atrial overdrive pacing in 21 patients. In 10 patients with abnormal sinus node function and in 11 patients with normal sinus node function we recorded the spontaneous termination of supraventricular tachyarrhythmia in the clinical electrophysiology laboratory; a strong correlation (r = 0.94) was found between the maximal spontaneous sinus node recovery time and the maximal paced sinus node recovery time. A weaker correlation was found between the paced and spontaneous sinus node recovery times (r = 0.57) when the spontaneous termination of supraventricular tachyarrhythmia was recorded during ambulatory electrocardiographic recording in seven patients. Spontaneous sinus node recovery times were significantly shorter than maximal paced sinus node recovery times (p less than 0.001). However, no significant difference was detected between the paced and spontaneous sinus node recovery times when atrial pacing was performed at the rate of the tachycardia. We conclude that spontaneous and postpacing sinus node recovery times are closely correlated. The paced sinus node recovery time is, however, frequently more prolonged than spontaneous sinus node recovery time because of probable atriosinus entrance block during rapid supraventricular tachycardia.
journal_name
Am Heart Jjournal_title
American heart journalauthors
Gang ES,Reiffel JA,Livelli FD Jr,Bigger JT Jrdoi
10.1016/0002-8703(83)90515-xsubject
Has Abstractpub_date
1983-02-01 00:00:00pages
210-5issue
2eissn
0002-8703issn
1097-6744pii
0002-8703(83)90515-Xjournal_volume
105pub_type
杂志文章abstract::Left ventricular mass (LVM) measurements made by the truncated ellipsoid algorithm from clinical two-dimensional echocardiograms (2DE) were compared to autopsy weights in 37 patients. All six 2DE instruments were calibrated with an ultrasound phantom to standardize LVM measurements. Measurements were made by an experi...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(89)90083-5
更新日期:1989-07-01 00:00:00
abstract:BACKGROUND:The prodrug clopidogrel requires activation by cytochrome P-450 (CYP) enzymes for its antiplatelet effect. The genes encoding enzymes for clopidogrel activation are polymorphic, leading to reduced or increased function, depending on the respective genotype. Reduced-function alleles have been associated with ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2010.06.039
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND:Myocardial infarction (MI) complicated by cardiogenic shock (CS) is associated with high mortality. Early coronary revascularization improves survival, but the optimal mode of revascularization remains uncertain. We sought to characterize practice patterns and outcomes of coronary artery bypass grafting (CAB...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2020.01.020
更新日期:2020-08-01 00:00:00
abstract:BACKGROUND:Patients with diabetes mellitus (DM) experience higher rates of in-stent restenosis and greater benefit from drug-eluting stents implant at the time of percutaneous coronary intervention (PCI), necessitating prolonged dual anti-platelet therapy (DAPT). While DAPT reduces risk of ischemic events post-PCI, it ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2016.09.010
更新日期:2016-12-01 00:00:00
abstract::A new integrated method for quantitating temporal and spatial systolic wall motion heterogeneity was developed and applied in 15 normal subjects and 26 patients with previous myocardial infarction (MI). After frame by frame digitizing, right anterior oblique left cineventriculograms (LV) were analyzed with 90 spaced r...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(86)90465-5
更新日期:1986-10-01 00:00:00
abstract:BACKGROUND:The aim of this study was to compare rate of onset, magnitude, and consistency of platelet inhibition after administration of prasugrel or clopidogrel and to relate platelet inhibition to systemic exposure to each active metabolite. Thienopyridines are prodrugs, metabolized in vivo to active metabolites that...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2006.10.010
更新日期:2007-01-01 00:00:00
abstract::One hundred thirty-three patients with dilated heart failure, 80 with coronary artery disease, and 53 with idiopathic dilated cardiomyopathy were followed for a mean of 29 months. Patients with ischemic heart disease had a worse prognosis than those classified as having idiopathic cardiomyopathy. Features from history...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/s0002-8703(05)80242-x
更新日期:1990-05-01 00:00:00
abstract::Transient U wave inversion can be caused either by regional myocardial ischemia or by an elevation of systemic blood pressure. The characteristics of U wave inversion during chest pain attacks in 21 patients with variant angina were compared with those observed in 38 patients with hypertension without apparent ischemi...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(93)90104-h
更新日期:1993-04-01 00:00:00
abstract:BACKGROUND:Larger studies evaluating the angiographic results of second-generation stents are scarce. The objectives of this study were to assess current standards of angiographic and clinical outcomes after implantation of the second-generation stainless steel stent, NIR (Medinol Ltd, Tel Aviv, Israel), and to compare...
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:10.1067/mhj.2003.32
更新日期:2003-02-01 00:00:00
abstract::Myocardial ischemia, electrolyte changes, and fluctuations in autonomic tone may play an important role in the presentation of malignant ventricular arrhythmias. beta-Adrenoceptor blocking agents have been shown to decrease the incidence of ventricular fibrillation and sudden cardiac death in patients with coronary ar...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(94)90015-9
更新日期:1994-07-01 00:00:00
abstract:BACKGROUND:Apparent treatment-resistant hypertension (aTRH) is associated with an increased risk of adverse cardiovascular outcomes. We studied the frequency and intensity of care for aTRH among participants aged 65 years and older in the US-based REGARDS study linked with Medicare claims. METHODS:Blood pressure (BP) ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2017.01.008
更新日期:2017-04-01 00:00:00
abstract:BACKGROUND:Bleeding is associated with adverse outcome in acute coronary syndromes. However, the precise pathophysiologic mechanisms have not been elucidated. We sought to determine the relationship between bleeding and myocardial ischemia detected by concurrent continuous electrocardiogram (ECG) monitoring and their i...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2008.05.022
更新日期:2008-10-01 00:00:00
abstract::An acute thrombus at the proximal border of a high-grade atherosclerotic obstruction is the usual cause of myocardial infarction. Although intracoronary thrombolysis is potentially an exciting new therapy for reducing the extent of myocardial infarction by lysing coronary clot, a number of major difficulties limit its...
journal_title:American heart journal
pub_type: 临床试验,杂志文章
doi:10.1016/0002-8703(82)90267-8
更新日期:1982-10-01 00:00:00
abstract:AIMS:There is a growing concern about the occurrence of coronary artery aneurysms (CAAs) after drug-eluting stent (DES) implantation and their long-term course. We assessed the occurrence and the factors affecting the long-term outcome of DES-associated CAA. METHODS AND RESULTS:We analyzed 3,612 consecutive patients (...
journal_title:American heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ahj.2010.07.013
更新日期:2010-11-01 00:00:00
abstract::Coronary atherosclerosis may cause acute and chronic ischemic syndromes; the former are caused by "acute plaque events," mostly thrombosis complicating vulnerable ruptured plaques, namely severe lesions with large core, thin cap, and weak shoulder infiltrated by activated inflammatory cells. Plaque rupture may also oc...
journal_title:American heart journal
pub_type: 杂志文章,评审
doi:10.1016/s0002-8703(99)70321-2
更新日期:1999-08-01 00:00:00
abstract:OBJECTIVES:The objective of the study was to test the hypothesis that intracellular calcium modulation by 5-methyl-2-[piperazin-1-yl] benzene sulfonic acid monohydrate (MCC-135 [Caldaret]; Mitsubishi Pharma Corporation, Osaka, Japan) would preserve left ventricular function and reduce infarct size in patients undergoin...
journal_title:American heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ahj.2007.08.020
更新日期:2008-01-01 00:00:00
abstract::Adenosine infusion is accompanied by increases in coronary blood flow and myocardial blood volume. Myocardial blood volume may produce changes in diastolic left ventricular (LV) performance by increasing myocardial turgor. Diastolic dysfunction may also be the result of myocardial ischemia. The relation between change...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(95)90318-6
更新日期:1995-04-01 00:00:00
abstract:BACKGROUND:The magnitude of benefit of cardiac resynchronization therapy (CRT) varies significantly among its recipients; approximately 30% of CRT patients do not report clinical improvement. Optimization of CRT pacing parameters can further improve cardiac function, both acutely and chronically. Echocardiographic opti...
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.2012.02.007
更新日期:2012-05-01 00:00:00
abstract::Combination therapy with mexiletine (MEX) and quinidine (Q) may be more efficacious than monotherapy with either drug in suppressing ventricular arrhythmias, but its effects on ventricular performance are not known. Thus, right ventricular ejection fraction (RVEF) and left ventricular ejection fraction (LVEF) and wall...
journal_title:American heart journal
pub_type: 临床试验,杂志文章
doi:10.1016/0002-8703(88)90072-5
更新日期:1988-05-01 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::We report the angiographic studies of 53 consecutive patients with angiographic coronary artery disease (CAD) and recurrent sustained ventricular tachycardia occurring at least 6 weeks remote from an acute myocardial infarction. Triple-vessel disease was present in 25 patients (47%), double-vessel disease in 19 patien...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(83)90392-7
更新日期:1983-06-01 00:00:00
abstract:BACKGROUND:A strategy using coronary artery calcium (CAC) screening to refine coronary heart disease risk assessment in moderately high risk (MHR) subjects (10-year risk 10%-20%) has been suggested. The potential impact of this strategy is unknown. METHODS:Coronary artery calcium screening strategies focused on MHR su...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2009.03.018
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:Contrast-induced acute kidney injury (CIAKI) is a frequent complication after infusion of contrast media in patients undergoing percutaneous coronary intervention. A wide range of CIAKI rates occurs after intervention between 3% and 30%, depending on the definition. The aim of this study was to identify whic...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2011.02.004
更新日期:2011-05-01 00:00:00
abstract::The effectiveness of postextrasystolic potentiation (PESP) was assessed to detect residual function of the left ventricle in seven patients with idiopathic dilated cardiomyopathy (IDC). The postextrasystolic changes in the aortic pressure pulse, global left ventricular function, and quantitative regional left ventricu...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(87)90661-2
更新日期:1987-06-01 00:00:00
abstract::To study the left ventricular (LV) diastolic function in uncomplicated insulin-dependent diabetic patients without hypertension (n = 25) and comparable controls (n = 15), the effect of acute administration of nitroglycerin and nifedipine on cavity dimensions and transmitral flow pattern was investigated by Doppler ech...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/0002-8703(93)90542-h
更新日期:1993-12-01 00:00:00
abstract:BACKGROUND:Strenuous exercise can be a major trigger for coronary thrombosis and it enhances platelet aggregation. METHODS:We evaluated the effect of antiplatelet therapy on shear stress-induced platelet aggregation (SIPA), in addition to agonist-induced aggregation, before and immediately after ergometer exercise in ...
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.2001.116485
更新日期:2001-08-01 00:00:00
abstract::The hemodynamic effects of molsidomine were studied in 48 patients with acute myocardial infarction and compared with hemodynamic properties in a control group of 24 patients. The most pronounced decrease in pulmonary artery diastolic pressure occurs between 30 and 60 minutes after oral administration of 8 to 12 mg (n...
journal_title:American heart journal
pub_type: 临床试验,杂志文章
doi:10.1016/0002-8703(85)90688-x
更新日期:1985-03-01 00:00:00
abstract::The effect of beta-blockade on heart-rate variability was assessed at different heart rates in 52 patients with heart failure included in the randomized, placebo-controlled, Cardiac Insufficiency Bisoprolol Study (CIBIS). Scatterplots of R-R intervals display beat-to-beat variability by plotting each R-R interval agai...
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(96)90435-4
更新日期:1996-08-01 00:00:00
abstract:BACKGROUND:Health care utilization patterns and associated costs of congenital heart disease (CHD) in young adulthood are not well understood. METHODS:California State Inpatient Databases 2005 to 2009 were used to conduct a retrospective study on inpatient admissions of CHD patients 10 to 29 years old (n = 7,419) and ...
journal_title:American heart journal
pub_type: 杂志文章
doi:10.1016/j.ahj.2014.08.006
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:Appropriate dietary recommendations represent a key part of secondary prevention in cardiovascular disease (CVD). We evaluated the effectiveness of the implementation of a nutritional program on quality of diet, cardiovascular events, and death in patients with established CVD. METHODS:In this open-label, m...
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.2019.06.010
更新日期:2019-09-01 00:00:00