Search Results
Results 451 - 500 of 2882
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Vogel M - - 2010
OBJECTIVE: In patients with a left-sided congenital diaphragmatic hernia (CDH), the left ventricle (LV) is often compressed and smaller than normal. The objective of this study was to investigate whether small left heart dimensions prenatally normalize after birth in patients with CDH, or whether prenatal indices of left heart size ...
Bakalli Aurora - - 2010
Patients with dilated cardiomyopathy are considered a high risk group for left ventricular (LV) thrombus formation. However, the left atrial appendage (LAA) might be an additional site for thrombus formation in this patient group. We evaluated the association between LV size and left atrium/LAA size and determined the incidence of ...
Ashraf Muhammad - - 2010
OBJECTIVES: To compute left ventricular (LV) twist from 3-dimensional (3D) echocardiography. BACKGROUND: LV twist is a sensitive index of cardiac performance. Conventional 2-dimensional based methods of computing LV twist are cumbersome and subject to errors. METHODS: We studied 10 adult open-chest pigs. The pre-load to the heart was altered by ...
Machackova Jarmila - - 2010
This study investigated whether improvement in cardiac function and attenuation of cardiac remodeling by some beta-adrenoceptor (beta-AR) antagonists were associated with a depression in sympathetic activity in congestive heart failure (CHF) due to myocardial infarction (MI). Although cardiac dysfunction, hypertrophy and dilatation as well as increased plasma level of catecholamines ...
Henzler Thomas - - 2010
RATIONALE AND OBJECTIVES: To retrospectively determine the value of a volumetric ventricle analysis for the assessment of right ventricular dysfunction in patients with suspected pulmonary embolism (PE) by using image data from non-electrocardiographically (ECG)-gated multidetector computed tomography angiography (CTA). MATERIALS AND METHODS: Hypothesizing that the presence of PE and the ...
Gao Chun-Heng - - 2010
OBJECTIVES: To investigate the impacts of transcatheter occlusion for congenital atrial septal defect (ASD) on left ventricular (LV) systolic synchronicity using a real time three-dimensional echocardiography (RT3DE). METHODS: Thirty patients with ASD closure were recruited for the study. Realtime three-dimensional echocardiographic data sets were acquired for the measurement of LV ...
Pibarot Philippe - - 2010
A substantial proportion of patients with severe aortic stenosis may paradoxically have low transvalvular flow and a low gradient, despite the presence of normal left ventricular (LV) ejection fraction. These patients are characterized by pronounced LV concentric remodeling with small LV cavity size, impaired LV filling, altered myocardial function, and ...
Jang Won Il - - 2010
Carbon monoxide (CO) is one of well known chemical asphyxiants which cause tissue hypoxia with prominent neurologic and cardiovascular injury. Cardiac dysfunction after CO poisoning can be presented as two clinical patterns. One is transient global left ventricular (LV) dysfunction and the other is LV dysfunction with regional wall motion ...
Bulcao Christian F - - 2010
Donor heart dysfunction (DHD) precluding procurement for transplantation occurs in up to 25% of brain-dead (BD) donors. The molecular mechanisms of DHD remain unclear. We investigated the potential role of myocardial interleukin (IL)-6 signaling through the JAK2-STAT3 pathway, which can lead to the generation of nitric oxide (NO) and decreased ...
Takaya Tomohide - - 2010
Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is a multiple ligand receptor induced by oxidative stress. However, its role in chronic heart failure remains unknown. The left ventricular (LV) expression of LOX-1 was examined in a salt-sensitive Dahl rat model of hypertension. Compared with controls, LOX-1 mRNA levels increased by 4.7-fold ...
Park Hyo Eun - - 2010
BACKGROUND: The effects of left ventricular (LV) loading conditions on LV dyssynchrony have not been elucidated. We modified LV loading conditions to reveal their effects on echocardiography-derived LV dyssynchrony index (LVdys) in patients with documented nonischemic dilated cardiomyopathy. METHODS AND RESULTS: Thirty-seven patients were consecutively enrolled. After baseline measurements, pneumatic ...
Deng Yan - - 2010
Obesity is a well-known risk factor in the development of cardiovascular disease. We hypothesize that early left ventricular (LV) dysfunction secondary to obesity could be signalled by abnormal LV rotation. This prospective study examined 60 subjects divided into two groups: obese group with body mass index (BMI) >or=30 and control ...
Bocchiardo Mario - - 2010
AIMS: Monitoring of haemodynamic parameters or surrogate parameters of the left ventricle is especially important for patients under cardiac resynchronization therapy (CRT). Intracardiac impedance reflects left ventricular (LV) volume changes well in animal models. Since it is unknown whether this also holds in humans with heart failure (HF), we examined ...
Sabit Ramsey - - 2010
Cardiovascular manifestations in COPD include increased arterial stiffness, ischaemic heart disease, chronic heart failure and cor pulmonale. We hypothesised that sub-clinical right (RV) and left ventricular (LV) dysfunction occurs in patients with COPD, related to the severity of airflow obstruction, arterial stiffness and systemic inflammation. Thirty six patients and 14 ...
Koike Masato - - 2011
Left ventricular-assist device (LVAD) can lead to improvement of cardiac performance in a subset of patients, but chronic mechanical unloading in this fashion may result in left ventricular (LV)-atrophy and impaired functional recovery. Here, we evaluate the efficacy of transferring bone-marrow KSL cells (Lin-/c-kit+/Sca1+), a fraction containing endothelial progenitor cells, ...
Ahmed Mustafa I - - 2010
This study assessed myocardial damage in patients with chronic isolated mitral regurgitation (MR) and left ventricular ejection fraction (LVEF) >60%. Typically, MR patients have decreased LVEF after mitral valve (MV) repair despite normal pre-operative LVEF. Twenty-seven patients with isolated MR had left ventricular (LV) biopsies taken at time of MV ...
Garza Carolina A - - 2010
Obesity and bariatric surgery have been associated with changes in ventricular function and structure. The aim of the present study was to assess the long-term changes in left ventricular (LV) and right ventricular (RV) function and structure in patients with morbid obesity-body mass index >or=40 kg/m(2) or >or=35 kg/m(2) with ...
Anzai Atsushi - - 2010
Acute kidney injury (AKI) after myocardial infarction is associated with poor clinical outcome. However, mechanisms of the adverse effect of AKI on clinical outcome after reperfused ST-elevation myocardial infarction (STEMI) have not been fully elucidated. We examined 141 consecutive patients with reperfused first anterior STEMI. AKI was defined as an ...
Paulus Walter J - - 2010
Despite use of similar drugs, outcomes of recent heart failure (HF) trials were frequently neutral in heart failure with normal left ventricular ejection fraction (HFNEF) and positive in heart failure with reduced left ventricular ejection fraction (HFREF). The neutral outcomes of HFNEF trials were often attributed to deficient HFNEF patient ...
de Vries S T - - 2010
To evaluate the impact of high altitude on cardiac morphology and function in patients with coronary artery disease (CAD) and healthy controls. Eight patients with a history of acute myocardial infarction [53 +/- 8 years, left ventricular (LV) ejection fraction 54 +/- 6%] and a low risk score were compared ...
Jurcut Ruxandra - - 2010
For many years, the echocardiographic quantitative assessment of right ventricular (RV) function has been difficult owing to the complex RV anatomy. Identifying an accurate and reliable echocardiographic parameter for the functional assessment of the RV still remains a challenge. The review presents a summary of the most studied and presently ...
Vallejo Enrique - - 2010
BACKGROUND AND AIMS: Equilibrium radionuclide angiography (ERNA) has become an established method for assessing cardiac function. However, limited data are available to evaluate ventricular synchrony with ERNA. The aim of this study was to assess the variability and accuracy of ERNA to evaluate ventricular synchrony by means of phase images ...
Kubo Toru - - 2010
BACKGROUND: Serum cardiac troponin I (cTnI) is a sensitive and specific marker of myocardial injury. However, a systematic evaluation of cTnI in hypertrophic cardiomyopathy (HCM) patients has not been performed. HYPOTHESIS: The purpose of this study is to evaluate cTnI and determine its relationship to clinical features in HCM. METHODS: ...
Remmelink Maurice - - 2010
OBJECTIVES: We studied online left ventricular (LV) dynamic effects of mechanical LV unloading directly after percutaneous coronary intervention (PCI). BACKGROUND: Limited clinical information is available on the direct LV dynamic consequences of LV unloading in patients undergoing high-risk PCI and primary PCI for acute ST-elevation myocardial infarction. METHODS: The effects ...
Phan Thanh T - - 2010
BACKGROUND: Using speckle-tracking imaging (STI), the aims of this study were to assess dyssynchrony and quantify the myocardial energy wasted by contractility in delayed segments by determining the longitudinal strain delay index (LSDi) in patients with heart failure with preserved ejection fraction (HFpEF). METHOD: Thirty-eight patients with HFpEF and 33 ...
La Vecchia L - - 2010
AIM: The aim of this study was to evaluate diagnostic criteria for apical ballooning (AB) derived from quantitative analysis of left ventricular angiograms. AB is an unusual cause of left ventricular dysfunction mimicking acute transmural ischemia (STEMI). METHODS: This study compared the systolic and diastolic linear measures of left ventricle ...
Kuznetsova Tatiana - - 2010
Because life expectancy and the prevalence of risk factors such as hypertension, obesity and diabetes are rising globally, heart failure (HF) is growing into a major health problem. Impairment of left ventricular (LV) diastolic function as well as systolic function appear very early in the course of heart disease. Recent ...
Guazzi Marco - - 2010
BACKGROUND: Previous research has demonstrated the prognostic value of echocardiography with tissue Doppler imaging (TDI) in the heart failure (HF) population. Heart rate recovery (HRR) has also recently shown promise as a prognostic marker. HYPOTHESIS: We hypothesize echocardiography with TDI and HRR will be significantly correlated and both will provide ...
Cho Kyoung Im - - 2010
An association between emotional or physical stressful triggers and adverse cardiovascular events, such as death and myocardial infarction, has been recognized for many years. The clinical features of transient left apical ballooning syndrome have been clearly described, but the effect of chronic stress on the myocardium is unknown. Our objective ...
Tan E-S - - 2010
Background. Little is known about the diagnostic accuracy of global LV function assessment by electromechanical endocardial mapping (EEM). The aim of the present study was to determine the relationship between global left ventricular (LV) function measured by EEM and biplane left ventricular contrast angiography (LVA) after ST-elevation myocardial infarction (STEMI).Methods. ...
Gemignani Vincenzo V National Research Council, Institute of Clinical Physiology, Pisa, Italy. - - 2010
Invasively measured left ventricular (LV) dP/dt is the accepted standard for measuring acute and chronic directional changes in LV contractility. Recently, we developed a noninvasive force sensor based on an accelerometer positioned on the chest, which measures the vibrations generated by isovolumic myocardial contraction. The aim of this paper was ...
Miyoshi Toru - - 2010
AIM: The cardio-ankle vascular index (CAVI) has been proposed as a new noninvasive marker of arterial stiffness independent of blood pressure. We investigated the association of the CAVI with coronary atherosclerosis and left ventricular (LV) systolic and diastolic function in patients with ischemic heart disease (IHD). METHODS: A total of ...
Sürücü Hüseyin - - 2010
BACKGROUND: We aim to evaluate left ventricular (LV) function abnormalities, especially circumferential contraction functions, in obese patients. METHOD: Cases without coronary artery disease (CAD) were divided into two groups according to their body mass indexes (BMI). RESULTS: Female predominance (P = 0.002), systolic blood pressure (BP) (P = 0.001), diastolic ...
Flu Willem-Jan - - 2010
This study evaluated the prevalence of left-ventricular (LV) dysfunction in vascular surgery patients and pharmacological treatment, according ESC guidelines. Echocardiography was performed pre-operatively in 1,005 consecutive patients. Left ventricular ejection fraction (LVEF) <or=50% defined systolic LV dysfunction. Diastolic LV dysfunction was diagnosed based on E/A-ratio, pulmonary vein flow, and deceleration ...
Jacquier Alexis - - 2010
To describe a method for measuring trabeculated left ventricular (LV) mass using cardiac magnetic resonance imaging and to assess its value in the diagnosis of left ventricular non-compaction (LVNC). Between January 2003 and 2008, we prospectively included 16 patients with LVNC. During the mean period, we included 16 patients with ...
Weir Robin A P RA Cardiology Department, Western Infirmary, Glasgow, Scotland, United - - 2010
This study sought to assess, for the first time, the relationship between serum concentrations of the soluble interleukin-1 receptor family member ST2 (sST2) and serial change in left ventricular (LV) function after acute myocardial infarction (AMI). Serum sST2 levels are elevated early after AMI and are associated with lower pre-discharge ...
Losi Maria Angela - - 2010
BACKGROUND: Left ventricular (LV) diastolic dysfunction is linked to myocardial collagen content in many cardiac diseases. There are no data regarding such relationship in patients with end-stage renal disease (ESRD) undergoing haemodialysis. METHODS: Twenty-five patients with ESRD undergoing haemodialysis were studied by echocardiography. LV diastolic function was investigated by Doppler ...
Ehara Shoichi - - 2010
OBJECTIVES: Although physicians frequently perform palpation of the apex beat to evaluate left ventricular (LV) size and hypertrophy, the clinical significance of apex beat palpation is still unclear. The introduction of multislice computed tomography (MSCT) has enabled assessment not only of coronary stenoses but also LV volume, mass, and distance ...
Eek Christian - - 2010
BACKGROUND: Infarct size is a strong predictor of mortality and major adverse cardiovascular events after myocardial infarction. Acute reperfusion therapy limits infarct size and improves survival, but its use has been confined to patients with ST-segment-elevation myocardial infarction. The purpose of this study was to assess the relationship between echocardiographic ...
Mizuno Reiko - - 2010
The clinical importance of cold-induced reversible myocardial ischaemia, known as cardiac Raynaud's phenomenon (C-Raynaud), has not been established in systemic sclerosis (SSc). This prospective study investigated the impact of C-Raynaud on long-term irreversible left ventricular (LV) functional and morphologic deterioration in SSc. Fifty-one SSc patients with no clinical evidence of ...
Mu Yuming - - 2010
PURPOSE: To evaluate left ventricular (LV) regional systolic function and dyssynchrony in patients with dilated cardiomyopathy (DCM) by real time three-dimensional echocardiography (RT-3DE). METHODS: The study population comprised 30 normal controls (NOR) and 44 patients with DCM. We divided the left ventricle into apical, middle, and basal regions. We calculated ...
Yan Andrew T - - 2010
We sought to examine the relationship between circulating interleukin-6 (IL-6) level and regional left-ventricular (LV) function among apparently healthy individuals free of cardiovascular disease. Using magnetic resonance myocardial tagging, we determined peak systolic circumferential strain (Ecc) as a measure of regional systolic function in 894 asymptomatic participants in the Multi-Ethnic ...
Ohtsuki Masatsugu - - 2010
It has been reported that angiotensin converting enzyme (ACE) 2, a homologue of ACE, has direct effects on cardiac function. However, the role of ACE2 in the development of human heart failure is not fully understood. We evaluated the expression of the ACE2 gene by means of real-time RT-PCR in ...
Oliver-Dussault Christelle - - 2010
In humans, volume overload (VOL) increases the risk of sudden cardiac death, but there is also important inter-individual variability, presumably because of differences in genetic backgrounds. Although VOL has rapid effects on myocardial properties, it is not known to which extent the severity of these early responses correlate with the ...
Ratering David - - 2010
BACKGROUND: Self-gated dynamic cardiovascular magnetic resonance (CMR) enables non-invasive visualization of the heart and accurate assessment of cardiac function in mouse models of human disease. However, self-gated CMR requires the acquisition of large datasets to ensure accurate and artifact-free reconstruction of cardiac cines and is therefore hampered by long acquisition ...
Zac? Valerio - - 2010
Quantification of left ventricular (LV) systolic function represents a major aspect of echocardiographic assessment in the spectrum of cardiac diseases. However, because of the high complexity of LV contraction mechanics, the classical approach with assessment of a single measure of systolic function, such as ejection fraction or fractional shortening, has ...
Moon Jeonggeun - - 2010
Vasovagal syncope (VVS) has been believed to occur when mechanoreceptors are discharged by vigorous ventricular contraction. However, previous investigators have reported divergent observations regarding the presence of left ventricular (LV) hypercontractility in VVS. Because the autonomic nervous system can be promptly activated after certain stimuli, we postulated that instantaneously increased ...
Fesslova Vlasta - - 2010
A full-term female newborn with neonatal asphyxia and severe anemia (Hb 2.5 g/dL) with normal heart developed a massive myocardial infarction. No examinations were performed during pregnancy for parental nomadism. The baby had immediate external cardiac massage, ventilatory assistance, and blood transfusion. Cardiomegaly was evident at chest X-ray and marked ...
Doesch Christina - - 2010
PURPOSE: The aim of this study was to evaluate the extent of epicardial adipose tissue (EAT) and its relationship with left ventricular (LV) parameters assessed by cardiovascular magnetic resonance (CMR) in patients with congestive heart failure (CHF) and healthy controls. BACKGROUND: EAT is the true visceral fat deposited around the ...
Pereira Val?ria Fontenelle Angelim - - 2010
In hypertension, left ventricular (LV) hypertrophy develops as an adaptive mechanism to compensate for increased afterload and thus preserve systolic function. Associated structural changes such as microvascular disease might potentially interfere with this mechanism, producing pathological hypertrophy. A poorer outcome is expected to occur when LV function is put in ...
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