Abstract:
:The present study has examined the role of diltiazem as a protective agent in a canine model of norepinephrine cardiotoxicity. Effects of diltiazem, 20 micrograms/kg/min x 5 min pretreatment followed by 10 micrograms/kg/min x 90 min, or saline infusion were examined at baseline and 1 h after infusion of norepinephrine, 4 micrograms/kg/min for 90 min, in closed-chest anesthetized dogs. Left ventricular function was assessed by equilibrium radionuclide angiogram and two-dimensional echocardiogram. In 7 saline experiments, hypotension and increased heart rate were observed at 1 h post infusion. In the diltiazem-treated group (n = 7), mean arterial pressure and heart rate were unchanged. In the saline group, left ventricular ejection fraction fell from 0.50 +/- 0.04 to 0.28 +/- 0.04. Left ventricular ejection fraction was unchanged in the diltiazem-treated group: 0.52 +/- 0.03 to 0.55 +/- 0.07. Left ventricular end-diastolic volume was increased at 1 h post infusion in saline controls but not in the diltiazem-treated group. Measurement of fractional shortening from two-dimensional echocardiograms also indicated left ventricular dysfunction in the saline but not diltiazem-treated groups. Left ventricular end-systolic wall stress following norepinephrine infusion was significantly increased in the saline but not diltiazem-treated groups: 122.7 +/- 18.7 vs 67.6 +/- 19.7 g/cm2, respectively. In dogs receiving saline without norepinephrine infusion, no significant changes occurred over the course of the experiment. Histologic examination showed mild contraction band necrosis in saline controls but not in sham saline dogs. Diltiazem showed intermediate histologic evidence of injury, which was not further quantified. This study suggests that effects of norepinephrine on left ventricular function in the canine model of norepinephrine cardiotoxicity may be largely due to increased wall stress following a prolonged increase in afterload. Diltiazem pretreatment afforded significant protection of left ventricular function.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Jolly SR,Reeves WC,Mozingo S,Mehta P,Gilliland MG,Wilson E,Movahed Adoi
10.1016/0167-5273(92)90105-csubject
Has Abstractpub_date
1992-07-01 00:00:00pages
31-40issue
1eissn
0167-5273issn
1874-1754pii
0167-5273(92)90105-Cjournal_volume
36pub_type
杂志文章abstract:BACKGROUND:Native T1 mapping has emerged as a noninvasive non-contrast magnetic resonance imaging (MRI) method to assess for diffuse myocardial fibrosis. However, LV native T1 time in AF patients and its clinical relevance are unclear. METHODS:Fifty paroxysmal AF patients referred for PVI (60 ± 8 years, 37 male) and 1...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.11.073
更新日期:2016-01-15 00:00:00
abstract:OBJECTIVE:The present article aimed to provide accurate estimate of the control rate of hypertension and the influencing factors in hospitals of different grades in Chongqing. METHODS:In this survey, hypertensive outpatients were recruited from 5 tertiary hospitals, 6 secondary hospitals and 5 primary hospitals in 9 d...
journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ijcard.2014.07.263
更新日期:2014-10-20 00:00:00
abstract::We studied 36 patients with successful transluminal coronary angioplasty (group 1) noninvasively using exercise electrocardiography, exercise T1-201 myocardial scintigraphy and equilibrium radionuclide ventriculography before and 3-5 days after the procedure. Six patients who underwent aortocoronary-bypass surgery (gr...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(83)90169-9
更新日期:1983-06-01 00:00:00
abstract:BACKGROUND:Atrial function is an integral part of cardiac function which is often neglected. The presence of coronary artery disease (CAD) may impair atrial function. This study investigated if atrial mechanical dysfunction was present in patients with CAD by tissue Doppler echocardiography (TDI). METHODS:Echocardiogr...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2004.12.077
更新日期:2005-11-02 00:00:00
abstract::We investigated the electrophysiological properties of the heart in patients with definite or classical rheumatoid arthritis using programmed electrical stimulation techniques. Twelve patients with rheumatoid arthritis and without evidence of organic heart disease or arrhythmia detectable with serial electrocardiogram...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(90)90250-9
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND:Several studies have reported that hepatitis B virus (HBV) infection affects the risk of coronary heart disease. However, its association is controversial. Thus, we conducted a systematic review and meta-analysis to better understand it. METHODS:Relevant studies published before October 2017 were identified...
journal_title:International journal of cardiology
pub_type: 杂志文章,meta分析
doi:10.1016/j.ijcard.2018.04.059
更新日期:2018-08-15 00:00:00
abstract::Information concerning acute myocardial infarction after cannabis usage is limited and the actual mechanism of cannabis-induced myocardial infarction is not well known. In the report, we described a young man with an acute myocardial infarction and cannabis-induced coronary thrombosis. ...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2006.08.012
更新日期:2007-09-03 00:00:00
abstract:OBJECTIVE:Determining the adherence to ACC/AHA/ESC 2006 guidelines and its influence on the survival of patients with atrial fibrillation. METHODS:Prospective observational study of patients discharged during 2007 from an Internal Medicine department with a main or secondary diagnose of atrial fibrillation. The stroke...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2014.07.098
更新日期:2014-09-20 00:00:00
abstract:BACKGROUND:In addition to lowering lipid profile, statins have pleiotropic effects on improving vascular function. Changes of these pleiotropic effects and their relationship to lipid profile after withdrawal of statin treatment remained unclear. METHODS:We investigated the changes of lipid profile and plasma concentr...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2003.11.023
更新日期:2005-02-28 00:00:00
abstract:BACKGROUND AND PURPOSE:Carotid intimal medial thickness (IMT) is a measure of subclinical atherosclerosis and is predictive of future cardiovascular events. The purpose of this study was to determine the significance and magnitude of association between IMT and atherosclerotic calcification of the carotid arteries. ME...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2004.12.039
更新日期:2005-08-03 00:00:00
abstract:BACKGROUND:Inflammation and oxidant stress have been suggested to be involved in the structural remodeling in atrial fibrillation (AF), and inducible nitric oxide synthase (iNOS) is associated with inflammation and oxidant stress. To study whether iNOS could contribute to atrial remodeling in AF, we investigated the re...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2008.02.026
更新日期:2008-11-12 00:00:00
abstract::Patent foramen ovale (PFO) is a remnant of the foetal circulation, found in about a quarter of the population. PFO is an asymptomatic condition and the high prevalence infers that it is in most cases of no or only limited clinical significance. However, recent research has found an increased prevalence of PFO in crypt...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2009.01.049
更新日期:2009-05-01 00:00:00
abstract::Critically evaluating the methodology of the adventitial delivery of stem cells, some specific options should be underlined. Adventitia as the most superficial layer, consisting of connective tissue has to be distinguished of perivascular tissues. By strict definition, an adventitia is the outermost connective tissue ...
journal_title:International journal of cardiology
pub_type: 社论
doi:10.1016/j.ijcard.2012.11.063
更新日期:2013-05-10 00:00:00
abstract::Paroxysmal atrial fibrillation is considered a frequent complication of acute myocardial infarction.It has been rarely reported alternating right and left bundle branch block associated with atrial fibrillation. It has also been rarely reported changing axis deviation with left bundle branch block also during atrial f...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.08.056
更新日期:2009-03-06 00:00:00
abstract:INTRODUCTION:Limited data is available regarding the novel Reveal LinQ (LinQ) which is a new generation implantable loop recorders (ILRs). METHODS:We performed a prospective, observational study of all consecutive patients undergoing conventional (Reveal XT; XT) and LinQ devices at our institution between January 2012...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.04.241
更新日期:2015-07-15 00:00:00
abstract:BACKGROUND:Despite the increasing number of reports on lipomatous hypertrophy of interatrial septum, a standardization of measurement of the dimensions of the interatrial septum (IAS) in the different phases of cardiac cycle has not been reported. Moreover, no data on modification of thickness with age and in specific ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(95)02403-j
更新日期:1995-08-01 00:00:00
abstract:BACKGROUND:The incidence of congenital coronary anomalies is mainly derived from autopsy series and pre-participation exams in athletes. Limited data exist regarding the spectrum of coronary anomalies that can be detected in asymptomatic patients. We sought to describe echocardiographically detected congenital coronary...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2007.04.063
更新日期:2008-06-06 00:00:00
abstract::A 21-year-old patient developed tricuspid endocarditis with the distal sections of two redundant ventriculo-atrial shunts remaining in the right atrium. We report their percutaneous removal using a Dotter basket. ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(90)90071-c
更新日期:1990-08-01 00:00:00
abstract::Recent studies have demonstrated the potential for myocardial regeneration at the time of myocardial infarction. Our lab focuses on understanding how stem cells home to injured tissue. We believe that a detailed analysis of the biological responses to tissue injury not only gives us insight into how damage occurs, but...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(04)90007-1
更新日期:2004-06-01 00:00:00
abstract:PURPOSE:Cyanosis is considered to be a risk factor for cholelithiasis which is an important complication of cyanotic congenital heart disease (CCHD) in adults. In this study, the prevalence of cholelithiasis and asymptomatic calcium bilirubinate gallstones was evaluated in adults with congenital heart disease (CHD). Fu...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2010.07.011
更新日期:2011-10-20 00:00:00
abstract:BACKGROUND:Reciprocal relationships between endothelial dysfunction and insulin resistance imply that improvement in endothelial dysfunction will have beneficial metabolic consequences. We hypothesized that amlodipine therapy in hypertensive subjects will improve endothelial dysfunction and metabolic parameters. METHO...
journal_title:International journal of cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ijcard.2007.11.058
更新日期:2009-03-20 00:00:00
abstract::Myocardial bridging is present when a segment of a major epicardial coronary artery, the 'tunnelled artery', runs intramurally through the myocardium. With each systole, the coronary artery is compressed. The pathophysiology of myocardial bridging is incompletely understood. With each systole, the coronary artery is c...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2009.03.106
更新日期:2012-01-26 00:00:00
abstract:BACKGROUND:Heparin is an important medication in the treatment of patients with unstable angina pectoris. We designed an observational study to compare the effects of standard heparin (SH) with low molecular weight heparin (LMWH) on vascular endothelial growth factor (VEGF) levels in patients undergoing coronary artery...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2003.03.022
更新日期:2004-04-01 00:00:00
abstract:BACKGROUND:Circulating C-reactive protein (CRP) is a marker of inflammation and is associated with the incidence of cardiovascular events. Although it has been known that adiponectin protects, whereas leptin accelerates, the development of atherosclerotic diseases, the comparative strength of their reciprocal effects o...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2008.01.006
更新日期:2008-11-12 00:00:00
abstract:BACKGROUND:Atrial natriuretic peptide (ANP) therapy has been reported to have beneficial effects in patients with acute myocardial infarction (AMI); however, its impact on in-hospital mortality remains unclear. This study aimed to investigate the effects of ANP therapy on in-hospital mortality in AMI patients undergoin...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.07.159
更新日期:2016-11-01 00:00:00
abstract:BACKGROUND:The aim of this study is to evaluate the predictors of permanent pacemaker (PPM) implantation after TAVI. METHODS:Between January 2008 and February 2012, 418 patients with severe aortic stenosis underwent TAVI and were enrolled in a Brazilian multicenter registry. After excluding patients who died during th...
journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ijcard.2014.05.020
更新日期:2014-08-01 00:00:00
abstract::Specific molecules including inflammatory cell adhesion molecules mediate attachment of blood leukocyte and platelets to the endothelium and mononuclear cell migration into the arterial intima. However, the clinical significance of soluble cell adhesion molecules very early in the course of acute coronary syndrome is ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(02)00564-8
更新日期:2003-08-01 00:00:00
abstract::The objective of this study was to prospectively investigate various clinical and echocardiographic variables to predict the left atrial and left atrial appendage clot and spontaneous echo contrast in patients with severe rheumatic mitral stenosis. We studied 200 consecutive patients (112 males and 88 females; mean ag...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(00)00235-7
更新日期:2000-05-31 00:00:00
abstract:BACKGROUND:Heart failure with preserved ejection fraction (HFpEF) is among the most common forms of heart failure (HF). We aimed to investigate the prognostic significance of serum potassium levels and its interaction with type-2 diabetes mellitus in patients with HFpEF. METHODS:Consecutive HFpEF patients were prospec...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.04.029
更新日期:2020-10-15 00:00:00
abstract:BACKGROUND:Evaluation of the combined utility of brain natriuretic peptide (BNP) and cardiac troponin T (cTnT) for risk stratification in normotensive patients with acute pulmonary embolism. The changing patterns of BNP and cTnT levels during the initial management of pulmonary embolism and their correlation with clini...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2006.03.030
更新日期:2007-03-20 00:00:00