Abstract:
:To assess whether derivation of an effective mitral prosthetic valve area using the continuity equation provides an improved functional assessment of the Bjork-Shiley mitral prosthesis over the pressure half-time method, Doppler echocardiographic studies were performed in 43 patients 12 +/- 7 months following the valve replacement. Effective valve orifice area used as the standard for comparison was determined by a hydraulic formula validated in vitro over a wide range of flow rates. All patients were clinically stable, without evidence of prosthetic dysfunction or aortic regurgitation. Prosthetic mitral valve orifice area determined by the hydraulic formula, by the continuity equation and by pressure half-time method for all prostheses sizes averaged 1.6 +/- 0.46 cm2, 1.83 +/- 0.56 cm2 and 2.34 +/- 0.48 cm2, respectively. Effective valve orifice area by the hydraulic formula had a strong correlation with that derived by the continuity equation (r = 0.86; P < 0.0001; standard error of estimate (S.E.E.), 0.12 cm2), but an insignificant correlation with the area calculated by the pressure half-time method (r = 0.24). Prosthetic mitral valve areas determined by the continuity equation and by pressure half-time method also correlated poorly (r = 0.24). Pressure half-time was affected by heart rate, diastolic filling period, left ventricular fractional shortening and presence of atrial fibrillation (P < 0.001). Thus, using the standard continuity equation to determine the orifice area of the Bjork-Shiley prosthesis in the mitral position provides improved assessment compared with the pressure half-time method.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Mohan JC,Agrawal R,Arora R,Khalilullah Mdoi
10.1016/0167-5273(94)90214-3subject
Has Abstractpub_date
1994-03-01 00:00:00pages
321-6issue
3eissn
0167-5273issn
1874-1754pii
0167-5273(94)90214-3journal_volume
43pub_type
杂志文章abstract::The response over time of the QT interval and the Transmural Dispersion of Repolarization (TDR) to Isoproterenol infusion (ISO) in an 85 year-old-man with severe and syntomatic bradycardia, in the setting of an Amiodarone-induced Long QT Syndrome (LQTS) is the subject of this communication. ISO shortened the QT and de...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.07.175
更新日期:2009-04-17 00:00:00
abstract::The 2009 European Guidelines on Diagnosis and Treatment of Pulmonary Hypertension have been adopted for Germany. The guidelines contain detailed recommendations on the diagnosis of pulmonary hypertension (PH). However, the practical implementation of the European Guidelines in Germany requires the consideration of sev...
journal_title:International journal of cardiology
pub_type: 共识发展会议,杂志文章
doi:10.1016/S0167-5273(11)70490-9
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Atrial fibrillation (AF) is an arrthymia characterized by increased risk of ventricle arrthymias and thromboembolism especially ischemic stroke. Most thrombus originated in the left atrial appendage, thus left atrial occlusion (LAAO) may be an effective alternative for stroke prevention in atrial fibrillatio...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2015.10.011
更新日期:2016-01-15 00:00:00
abstract::A 56-year-old man without previous medical history or risk factors for coronary artery disease, presented with chest pain 2 weeks after violent blunt chest trauma. He was as a spectator, beaten and kicked almost to death during an amateur soccer match. Because of embarrassment, this was denied till shortly after his d...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(97)00320-3
更新日期:1998-02-28 00:00:00
abstract:BACKGROUND:The selective alpha 1-adrenoceptor antagonist doxazosin in both standard formulation and gastrointestinal therapeutic system (GITS) controlled-release formulation is effective for hypertension without having a negative impact on serum lipids. This study was designed to compare the relative efficacy of these ...
journal_title:International journal 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.ijcard.2004.07.005
更新日期:2005-05-11 00:00:00
abstract:BACKGROUND:Cardiovascular disease has emerged as the world's leading cause of death in the last century. An epidemiological focus of this disease that extends not only beyond the developed world but also far back into antiquity asks new questions about associated risk factors. Ancient mummies found in the Atacama deser...
journal_title:International journal of cardiology
pub_type: 历史文章,杂志文章
doi:10.1016/j.ijcard.2016.08.176
更新日期:2016-11-15 00:00:00
abstract::Pulmonary valve replacement (PVR) reduces right ventricular (RV) volumes in the setting of long-term pulmonary regurgitation after Tetralogy of Fallot (ToF) repair; however, little is known of its effect on RV diastolic function. Right atrial volumes may reflect the burden of RV diastolic dysfunction. The objective of...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2014.09.009
更新日期:2014-11-15 00:00:00
abstract:BACKGROUND:Diabetes mellitus (DM) alters the energy substrate metabolism in the heart and the early sign of diabetic cardiomyopathy is the diastolic dysfunction. Although it is known that the extracellular matrix must be altered in the presence of diabetes, its local regulation has not been fully elucidated. Our aim wa...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2006.01.027
更新日期:2007-01-08 00:00:00
abstract:OBJECTIVE:Free fatty acid inhibition with trimetazidine (TMZ) improves myocardial metabolism and myocardial ischemia in patients with coronary artery disease (CAD). Because of its effect on myocardial glucose utilization TMZ may represent a therapeutic option in diabetic patients with CAD. Aim of the present study was ...
journal_title:International journal of cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ijcard.2006.08.082
更新日期:2007-08-09 00:00:00
abstract:AIMS:To test whether two-dimensional longitudinal strain (2DSE) performed after revascularization by percutaneous coronary intervention (PCI) could predict left ventricular (LV) remodeling in patients with recent non-ST elevation myocardial infarction (NSTEMI). METHODS:In 70 patients (62.7 ± 8.7 years) with recent NST...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2010.08.025
更新日期:2011-12-01 00:00:00
abstract::With the tremendous advances in cardiac pacing during the past four decades, cardiac pacemaker implantation is now a common clinical procedure. In recent years, the indications for permanent pacemakers have expanded. This increase in reasons for pacing and shift in mode of pacing have been caused by the evolution of p...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2004.10.011
更新日期:2005-07-20 00:00:00
abstract:BACKGROUND:Geranylgeranylacetone (GGA) has been reported up-regulating heat shock protein (HSP) expression, and protecting against atrial remodeling. This study aimed to investigate the effects of GGA on atrial electrophysiology and inducibility of atrial fibrillation (AF) in heart failure (HF) model. METHODS AND RESU...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2013.06.072
更新日期:2013-10-09 00:00:00
abstract:INTRODUCTION:The characteristics and outcomes of patients hospitalized with acute systolic heart failure (HF) and normal admission B-type natriuretic peptide (BNP) has not been previously explored. METHODS:Using the ESCAPE trial data, we compared patients with acute HF and left ventricular ejection fraction (LVEF) ≤30...
journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.ijcard.2016.12.069
更新日期:2017-04-01 00:00:00
abstract:OBJECTIVES:To perform an analytical overview of the risk factors, pathogenesis of stroke and the strategies for the management of concomitant coronary artery disease and carotid artery stenosis (CAS). Four strategies were analysed; CABG in the presence of CAS, combined (CE+CABG), reverse (CABG+CE<3 months) and prior st...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/s0167-5273(00)00251-5
更新日期:2000-06-12 00:00:00
abstract:BACKGROUND:We assessed the hypothesis whether behavioral stress may affect the development of atherosclerosis and whether regular exercise training may influence the composition of atherosclerotic plaques in apolipoprotein (apo) E-deficient mice. METHODS:Atherosclerosis was induced in apo E-deficient mice fed a high f...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2010.05.057
更新日期:2011-09-15 00:00:00
abstract::Cerebral haemorrhage in anticoagulated patients with mechanical valvular prosthesis poses an uncommon but difficult management problem. Four such patients are presented: one patient had delayed haemorrhagic transformation of a preexisting cerebral infarct, one probably had de novo haemorrhage complicating hypertension...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(91)90005-a
更新日期:1991-03-01 00:00:00
abstract:BACKGROUND:Subcutaneous ICD (S-ICD) is a promising option for Hypertrophic Cardiomyopathy (HCM) patients at risk of Sudden Cardiac Death (SCD). However, its effectiveness in terminating ventricular arrhythmias in HCM is yet unresolved. METHODS:Consecutive HCM patients referred for S-ICD implantation were prospectively...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.12.187
更新日期:2017-03-15 00:00:00
abstract:BACKGROUND:Limited evidence is available to determine the efficacy of an antibacterial enveloped (AE) cardiovascular implantable electronic device (CIED). OBJECTIVE:To assess if the use of antibacterial enveloped devices in high-risk patients are associated with lower chances of major CIED infections and mortality com...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.03.042
更新日期:2020-09-15 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::A 40-year-old man with severe sleep apnoea syndrome presented significant sinus pauses during a 48 h electrocardiogram Holter recording. Holter analysis showed one sinus pause of 6.4 s duration, and many pauses greater than 3 s. The 48 h Holter reevaluation, after a continuous positive air pressure device was applied,...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(98)00255-1
更新日期:1998-12-31 00:00:00
abstract::Atrial fibrillation (AF) is associated with increased risk of thromboembolic complications. One of the markers of the increased risk of hypercoagulable state is platelet hyperreactivity. The aim of the study was to assess impact of arrhythmia on platelet reactivity. METHODS:The study included 36 (mean age 48,3; range...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2017.03.023
更新日期:2017-05-15 00:00:00
abstract::A case of a patient who developed an acute myocarditis due to Lyme disease is reported. An increased serum antibody titer to Borrelia burgdorferi suggested a diagnosis and in addition of basic clinical methods, endomyocardial biopsy performed and analyzed by transmission electron microscopy. The lumen of myocardial ca...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2008.12.165
更新日期:2010-12-03 00:00:00
abstract::The journey of atherosclerosis begins with endothelial dysfunction and culminates into its most fearful destination producing ischemia, myocardial infarction and death. The excess cardiovascular disease morbidity and mortality in African-Americans is one of the major public health problems. In this review, we discuss ...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2008.10.007
更新日期:2009-02-20 00:00:00
abstract::Recent advances in microarray technology are helping to identify more genetic anomalies associated with tetralogy of Fallot and other congenital heart defects. We report on a 24-year-old woman with a syndromic form of tetralogy of Fallot who was found to have a novel de novo deletion of the proximal long arm of chromo...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2010.05.070
更新日期:2011-01-21 00:00:00
abstract:BACKGROUND:Japanese patients with acute myocardial infarction (MI) have a greater incidence of coronary artery spasm than Caucasians. Some beta-blockers have been reported to aggravate coronary spasm. This study sought to assess the effects of beta-adrenoceptor blockade on coronary vasospasm in Japanese patients with a...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2008.10.017
更新日期:2010-03-04 00:00:00
abstract::Between 1977 and 1987, seven pregnant women (mean age 28 years) had closed mitral valvotomy through a left lateral thoracotomy during their first (3 cases), second (2 cases) or third (2 cases) trimester. Surgery was necessary either because of acute heart failure with pulmonary edema not responding to medical treatmen...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(90)90088-m
更新日期:1990-03-01 00:00:00
abstract:INTRODUCTION:Corticosteroid administration in Kawasaki disease (KD) is controversial but accepted as treatment for patients who do not respond to initial treatment. The impact of corticosteroids on evolving coronary artery aneurysms (CAA) and future vascular remodelling is unknown. METHODS AND RESULTS:The clinical his...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2010.08.070
更新日期:2012-01-12 00:00:00
abstract::The prognostic significance of right ventricular ejection fraction, measured by radionuclide ventriculography, was assessed in 168 consecutive patients with inferior myocardial infarction. Right ventricular ejection fraction was 0.40 or less in 35 patients. Over a follow-up period of 40 months, there were 15 deaths in...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(91)90217-d
更新日期:1991-05-01 00:00:00
abstract:BACKGROUND:Stroke is the second cause of death worldwide and over than 80% of deaths occurs in developing countries. However, its characteristics in the Democratic Republic of Congo (DRC) are poorly defined. This study aimed to describe the key features of stroke in a hospital population of Kinshasa in DRC and to asses...
journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ijcard.2017.04.063
更新日期:2017-08-01 00:00:00
abstract:PURPOSE:To identify, using logistic regression models, factors impairing evaluation of patency of drug-eluting stents (DES) and bare metal stents (BMS) in coronary arteries by 64-slice MSCT versus conventional coronary angiography (CAG). MATERIALS AND METHODS:We evaluated 75 stents (16 DES and 59 BMS; 57 in males) imp...
journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.ijcard.2007.08.104
更新日期:2008-11-28 00:00:00