Search Results
Results 401 - 450 of 1032
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Alfakih Khaled - - 2004
ECG criteria for left ventricular hypertrophy (LVH) were mostly validated using left ventricular mass (LVM) as measured by M-mode echocardiography. LVM as measured by cardiac MRI has been demonstrated to be much more accurate and reproducible. We reevaluated the sensitivity and specificity of 4 ECG criteria of LVH against LVM ...
Anand Inder - - 2004
BACKGROUND: Anemia is often observed in patients with chronic heart failure (CHF), but its implications for patient outcomes are not well understood. The goal of this study was to investigate the relationship between anemia, severity of CHF, and clinical outcomes. METHODS AND RESULTS: Hemoglobin concentration (Hb) was measured in 912 ...
Schneider Markus P - - 2004
Regression of hypertensive left ventricular hypertrophy (LVH) is associated with improved prognosis. The aim of this trial was to compare the effects of irbesartan versus atenolol on LVH in subjects with essential hypertension. Because electrocardiographic and echocardiographic parameters of LVH carry disparate prognostic information, both methods were applied in this ...
Fieno David S - - 2004
OBJECTIVES: We sought to identify advantages of contrast-enhanced magnetic resonance imaging (MRI) in studying postinfarction ventricular remodeling. BACKGROUND: Although sequential measurements of ventricular volumes, internal dimensions, and total ventricular mass have provided important insights into postinfarction left ventricular remodeling, it has not been possible to define serial, directionally opposite changes ...
Li Z B - - 2004
Electrocardiographic (ECG) left bundle branch block (LBBB) is associated with left ventricular hypertrophy (LVH), but its relation to left ventricular (LV) geometry and function in hypertensive patients with ECG LVH is unknown. Echocardiograms were performed in 933 patients (548 women, mean age 66+/-7 years) with essential hypertension and LVH by ...
Buba, F; Department of ...
In a study of 70 newly diagnosed hypertensive at the University of Maiduguri Teaching Hospital over a six month period, echocardiography detected increased left ventricular weight (= 225g) in 31 patients representing 44.3%. When compared with the rapid assessment of the estimation of Left Ventricular Mass (LVM) with a normogram ...
Viazzi Francesca - - 2004
OBJECTIVE: To assess the impact and cost-effectiveness of microalbuminuria and cardiovascular ultrasonography in evaluating the risk profile in primary hypertension. METHODS: Four hundred and five untreated patients with primary hypertension underwent a routine, traditional work-up plus evaluation of albuminuria and ultrasound (US) assessment of cardiac and vascular structures. Albuminuria was ...
Park Sung-Ji - - 2004
Left ventricular hypertrophy (LVH) is associated with increased cardiovascular risk and altered sympathetic regulation in hypertension. To determine whether the level of beta-adrenergic receptor kinase-1 (betaARK1) in lymphocytes is related to LVH in patients with hypertension. Forty-nine patients with untreated essential hypertension were recruited to the study and classified into ...
Visrutaratna P - - 2004
A 10-year-old boy presented with a mass on the left side of his face for many years, left ear deafness, and limited vision in the left eye. Enhanced CT of the face and neck showed a multilobulated low attenuation mass in the left parotid space, with nodularity and involvement of ...
Fossati N - - 2004
Type I diabetes mellitus (IDDM) is associated with an increased cardiovascular risk, and eligibility protocols for simultaneous pancreas-kidney transplantation (SPKT) are consequently accurate for preoperative cardiovascular assessment. According to our algorithm, coronary angiography in SPKT candidates is indicated for patients not only experiencing previous cardiac events or symptoms, but also ...
Nadruz Wilson W - - 2004
Hydroxymethylglutaryl-coenzyme A reductase inhibitors prevent load-induced left ventricular hypertrophy (LVH). Whether this effect is related to antioxidant properties of this class of drugs is poorly understood. The aim of the present report was to evaluate the regulation of nitrotyrosine production during the development of load-induced LVH and the effect of ...
Joyce James J - - 2004
The average newborn's right ventricular mass, indexed to body surface area, is approximately 20% above the adult level, consistent with in utero physiologic hypertrophy. In contrast, the left ventricular mass index is underdeveloped by about 30% at birth, resulting in a ratio of right to left ventricular mass that is ...
Parrinello G - - 2004
Despite the fact that it is known that hypertension may be associated to early atherosclerosis manifestations, few data are to date available on the relationship between early carotid abnormalities and left ventricular diastolic dysfunction. To address this issue, 142 hypertensive patients (64 females and 78 males) younger than 55 years, ...
Hong Cheng - - 2004
RATIONALE AND OBJECTIVES: The objective of this study was to investigate the relationship between the coronary calcium mass and Agatston score measured on multidetector row computed tomography. MATERIALS AND METHODS: Eighty-three consecutive subjects (60 men and 23 women) referred for coronary screening were examined prospectively by electrocardiogram-triggered sequential multidetector row ...
Chen Li-xin - - 2004
BACKGROUND: Both real-time three-dimensional echocardiography (RT3DE) and myocardial contrast echocardiography (MCE) are novel imaging techniques. The purpose of this study was to confirm the feasibility and accuracy of RT3DE combined with MCE for quantitative evaluation of myocardial perfusion defects. METHODS: Thirteen dogs underwent ligation of the left anterior descending artery ...
Beuther Henrik - - 2004
Studies of evolved massive stars indicate that they form in a clustered mode. During the earliest evolutionary stages, these regions are embedded within their natal cores. Here we present high-spatial-resolution interferometric dust continuum observations disentangling the cluster-like structure of a young massive star-forming region. The derived protocluster mass distribution is ...
Tong Wenjing - - 2004
Both coronary artery calcium (CAC) deposits and increased left ventricular (LV) mass are important risk factors for coronary heart disease, but the relation between these 2 factors has rarely been studied. We examined the correlation of CAC and LV mass in 159 young to middle-aged African-Americans, and found that the ...
Kinsara Abdulhalim - - 2004
BACKGROUND: Heart murmurs are common in the elderly and increased intracavitary velocities (IIV) within the left ventricle have been reported to be a cause of systolic murmur. OBJECTIVE: To assess the prevalence and functional significance of IIV in healthy elderly subjects METHODS: Ambulatory healthy elderly subjects were recruited from community ...
Nishikawa Hiroaki - - 2004
Background There is evidence that statins induce the regression of cardiac hypertrophy in a transgenic rabbit model of hypertrophic cardiomyopathy. Methods and Results The association between treatment with statins and the regression of cardiac mass (left ventricular mass index, LVMI) was investigated in a case - control study using transthoracic ...
Bella Jonathan N - - 2004
OBJECTIVE: We sought to determine the heritability of left ventricular dimensions and mass in adult American Indians. METHODS: Echocardiograms were analysed in 1373 American Indian participants, from 445 families, in the Strong Heart Study (SHS) to determine the heritability of left ventricular dimensions and mass. Heritability calculations were performed using ...
Hoogsteen J - - 2004
OBJECTIVE: Of this study was to investigate three groups of highly trained competitive endurance athletes consisting of marathon runners, triathletes and cyclists for differences in left ventricular adaptation. METHODS: 25 marathon athletes, 21 triathlon athletes and 38 cyclists underwent a standard echocardiographic and Doppler study. RESULTS: The left ventricular internal ...
Rodriguez-Porcel Martin - - 2004
Hypertension increases oxidative stress, which can impair myocardial microvascular function and integrity. However, it is yet unclear whether long-term antioxidant intervention in early hypertension would preserve myocardial perfusion and vascular permeability responses to challenge. Pigs were studied after 12 weeks of renovascular hypertension without (n=8) or with daily supplementation of ...
Titcomb Clifton P CP - - 2004
With increased hemodynamic stress, the heart must adjust to meet the greater demands placed upon it. This adjustment frequently involves an alteration or remodeling in its structure or geometry, which augments its performance and helps to maintain adequate function under changing conditions. One of the most important forms of remodeling ...
Hong Soon Jun - - 2004
OBJECTIVE: The purpose of this study was to characterize the relationships among plasma adiponectin, essential hypertension, left ventricular diastolic function and left ventricular hypertrophy. METHODS AND RESULTS: Plasma adiponectin concentration was assessed by radioimmunoassay, and body mass index (BMI) was measured in 275 patients (138 women and 137 men). Various ...
Brisinda D - - 2004
Previous studies in magnetically shielded rooms have shown that magnetocardiographic (MCG) mapping can be useful to detect early signs of left ventricular hypertrophy (LVH). The aim of this study was to evaluate ventricular repolarization parameters in patients with essential hypertension, associated or not with LVH, by means of unshielded multichannel ...
Senior Roxy - - 2004
Left ventricular (LV) hypertrophy (LVH) confers increased cardiovascular risk on patients with hypertension. Echocardiography using new hand-held devices might allow community-based cost-effective screening for LVH in a targeted hypertensive population. Thus, the aim of this study was to test the validity of hand-held ultrasound devices to screen for LVH in ...
Prasad S K - - 2004
Chronic heart failure is a common disorder placing significant burdens on patients and health-care services. Noninvasive imaging plays a central role in accurate diagnosis, determination of etiology and prognosis, and in monitoring therapy. Advances in technology mean cardiovascular magnetic resonance (CMR) imaging has established itself as both a valuable clinical ...
Vitale Giovanni - - 2004
Cardiovascular disease is claimed to be one of the most severe complications of acromegaly, contributing significantly to mortality in this disease. In fact, an excess of growth hormone (GH) and insulin-like growth factor 1 (IGF-I) causes a specific derangement of cardiomyocytes, leading to abnormalities in cardiac muscle structure and function, ...
Zhuang Lei - - 2004
OBJECTIVES: To evaluate the feasibility and accuracy of measurement of left ventricular mass with intravenous contrast enhanced real-time three-dimensional (RT3D) echocardiography in the experimental setting. METHODS: RT3D echocardiography was performed in 13 open-chest mongrel dogs before and after intravenous infusion of a perfluorocarbon contrast agent. Left ventricular myocardium volume was ...
Oikarinen L - - 2004
The sum of time-voltage QRS areas in the 12-lead electrocardiogram (ECG) has outperformed other 12-lead ECG indices for detection of left ventricular hypertrophy (LVH). We assessed indices of time-voltage QRS and T-wave (QRST) areas from body surface potential mapping (BSPM) for detection of and quantitation of the degree of LVH. ...
Colao Annamaria - - 2004
Growth hormone (GH) and insulin-like growth factor-I are involved in heart development and in maintaining cardiac structure and performance. Cardiovascular disease has been reported to reduce life expectancy both in GH deficiency (GHD) and in GH excess. Patients with GHD suffer from abnormalities of left ventricular performance, i.e. reduced diastolic ...
Kenchaiah Satish - - 2004
Experimental and clinical studies provide evidence that hypertension is causally related to adverse cardiac structural changes, such as LA enlargement, LV hypertrophy and myocardial fibrosis, and functional changes inclusive of LV systolic and diastolic dysfunction. These changes are induced by both hemodynamic and nonhemodynamic factors. There is accumulating evidence from ...
Kühl H P - - 2003
AIMS: We sought to evaluate whether left ventricular (LV) mass (M) determined by M-mode echocardiography is overestimated compared with LVM calculated by three-dimensional (3D) echocardiography (E) in patients with normal LV shape. METHODS AND RESULTS: A total of 112 studies in 56 patients (60+/-13 years) with hypertension (n=25) or aortic ...
Lonn Eva - - 2003
BACKGROUND: The prognostic significance of left ventricular hypertrophy (LVH) identified by simple electrocardiographic (ECG) criteria in high-risk patients with established cardiovascular (CV) diseases is not clearly understood. DESIGN AND METHODS: The Heart Outcomes Prevention Evaluation (HOPE) trial was a randomized trial, which evaluated the effects of ramipril and of vitamin ...
London Gerard M - - 2003
Patients with end-stage renal disease (ESRD) have much higher rates of cardiovascular disease than the healthy population. Left ventricular hypertrophy (LVH), in particular, is common in this patient group. The impact of a decline in haemoglobin concentration on left ventricular mass index has been well documented. Partial correction of anaemia ...
Petersen Steffen E - - 2003
AIMS: Contrast enhanced magnetic resonance imaging (ceMRI) has been shown to reliably identify irreversible myocardial injury. The aim of this study was to compare the findings on ceMRI with routine clinical markers of myocardial injury in patients with acute myocardial infarction (MI). METHODS AND RESULTS: Twenty-four patients with acute MI ...
Diamond Joseph A - - 2003
The presence of left ventricular hypertrophy (LVH) confers markedly increased risk of cardiovascular morbidity and mortality in patients with hypertension. Regression of left ventricular (LV) mass with antihypertensive therapy is associated with reduction in cardiovascular events. In studies based on monotherapy, among the classes of antihypertensive drugs that have been ...
Young Lesley E - - 2003
Our recent data have confirmed that maximum oxygen delivery in racing Thoroughbreds is positively correlated to left ventricular mass measured by echocardiography. A similar, but weaker relationship also exists between left ventricular mass and Timeform performance rating in commercial racehorses. The relationship of the Thoroughbred heart to racing success and ...
Hernández Domingo - - 2003
OBJECTIVES: We studied the impact of the angiotensin-converting enzyme (ACE)/DD genotype on morphologic and functional cardiac changes in adult endurance athletes. BACKGROUND: Trained athletes usually develop adaptive left ventricular hypertrophy (LVH), and ACE gene polymorphisms may regulate myocardial growth. However, little is known about the impact of the ACE/DD genotype ...
Hayes Don D - - 2003
Primary cardiac lymphoma is a rare disease with a high mortality rate due to the advanced stage of myocardial involvement at presentation. The diagnosis is extremely difficult to make because of the rarity of the disease, variability of clinical manifestations, limited noninvasive diagnostic techniques available, and difficulties and/or delays in ...
Verdecchia Paolo - - 2003
BACKGROUND: Left ventricular hypertrophy (LVH) detected at electrocardiography (ECG) is a predictor of an increased cardiovascular risk in essential hypertension. However, uncertainty remains concerning the reproducibility of ECG LVH and the prognostic relevance of its regression over time in hypertension. The aim of this study was to determine the prognostic ...
Beyerbacht Hugo P - - 2003
PURPOSE: Evaluation of different electrocardiographic criteria for left ventricular hypertrophy (ECG-LVH criteria) using left ventricular mass index (LVMI) determined by magnetic resonance imaging (MRI). In addition, the relation between LVMI regression after aortic valve replacement and corresponding ECG changes regarding LVH was studied. METHODS: A group of 31 patients with ...
Rajappan Kim - - 2003
OBJECTIVE: In patients with aortic valve disease, the presence of left ventricular hypertrophy (LVH) carries a significant risk of adverse cardiovascular events. Regression of hypertrophy after aortic valve replacement (AVR) is associated with a reduction in risk. In general, M-mode echocardiography has been used for quantitative assessment of left ventricular ...
Danias Peter G - - 2003
BACKGROUND: Obesity is a major health problem in the Western world. Among obese subjects cardiac pathology is common, but conventional noninvasive imaging modalities are often suboptimal for detailed evaluation of cardiac structure and function. We investigated whether cardiovascular magnetic resonance imaging (CMR) can better characterize possible cardiac abnormalities associated with ...
Selvetella Giulio - - 2003
BACKGROUND AND PURPOSE: It has been demonstrated that left ventricular hypertrophy (LVH) confers an increased risk for major cerebrovascular events. However, it is still uncertain whether there is an association between LVH and asymptomatic cerebrovascular damage in hypertensive patients. In this study, we investigated the relation between LVH, evaluated by ...
Unlü M - - 2003
AIM: Evaluation of myocardial uptake of (111)In-anti-myosin antibodies in patients with essential hypertension for the verification of our hypothesis that it may increase in stage 1 in the left ventricle as a result of myocardial damage. PATIENTS, METHODS: Twelve men (mean age: 59+/-2.4 years) suffering from angina like symptoms and ...
Lee Jeong Ryul - - 2003
Mural endocarditis causing myocardial abscess without valvular involvement is very rare. We report an unusual case of left atrial auricular abscess which was successfully treated by surgical resection, treatment with antibiotics, and mediastinal irrigation. A 9-yr-old female patient with previous history of urinary tract infection was admitted because of persistent ...
Havranek Edward P - - 2003
BACKGROUND: Serial decline in electrocardiographic voltage in patients with increased left ventricular mass has been associated with a lower risk of cardiovascular events. METHODS: We studied 468 patients with diabetes mellitus and hypertension in the Appropriate Blood Pressure Control in Diabetes (ABCD) trial. Patients were randomized in a stratified design ...
Pokharel Saraswati - - 2003
Left ventricular hypertrophy (LVH) is currently the focus of intense cardiovascular research, with the resultant rapid evolution of novel concepts relating to its exceedingly complex pathophysiology. In addition to the alterations in signal transduction and disturbances in Ca(2+) homeostasis, there are structural changes in myofilaments, disorganization of the cytoskeletal framework ...
Akinboboye Ola - - 2003
PURPOSE: The purpose of this investigation was to determine whether left ventricular mass (LVM) assessed from myocardial perfusion gated SPECT (GSPECT) data corresponds with echocardiographic estimates, and whether mass accuracy decreases as relative myocardial wall thickness increases. MATERIALS AND METHODS: Myocardial perfusion tomograms were selected retrospectively for 37 patients, of ...
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