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Results 501 - 550 of 2805
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Wenhua Du - - 2011
We sought to evaluate the significance of Doppler tissue energy (DTE) and stressed echocardiography for diagnosing myocardial contusion (MC) in canines. Ten adult healthy dogs were anesthetized (3% pentobarbital sodium/i.v.) and impacted by BIM-II biological impact machine to induce MC. Conventional and stressed echocardiographies were used for segmental abnormal ventricular ...
Detterich Jon - - 2012
Iron cardiomyopathy is a leading cause of death in transfusion-dependent thalassemia major (TM) patients and MRI (T2*) can recognize preclinical cardiac iron overload, but, is unavailable to many centers. We evaluated the ability of 12-lead electrocardiography to predict cardiac iron loading in TM. 12-lead electrocardiogram and cardiac T2* measurements were ...
Oshima Fumiko - - 2011
Dysphagia after lateral medullary infarction (LMI) is common. The dysphagia of LMI is dynamically characterized by a failure in triggering of the pharyngeal-phase swallowing movements, reduced output, and lack of coordination (swallowing pattern abnormality). Based on accurate evaluation, we can select suitable rehabilitative approaches for individual patients, including respiratory therapy, ...
Van Hee Victor C VC Department of Medicine, University of Washington, Seattle, WA 98104, USA. - - 2011
Short-term exposure to air pollution may affect ventricular repolarization, but there is limited information on how long-term exposures might affect the surface ventricular electrocardiographic (ECG) abnormalities associated with cardiovascular events. We carried out a study to determine whether long-term air pollution exposure is associated with abnormalities of ventricular repolarization and ...
Krishnan Eswar - - 2012
Few studies have investigated the association between hyperuricemia and subclinical myocardial dysfunction. The authors analyzed the relationship between serum uric acid and subclinical markers of heart failure in participants in the Framingham Offspring Cohort (N=2169, mean age 57.3 years, 55.4% women). Cardiac dysfunction was assessed through echocardiographic measurements of left ventricular ...
Hofmann U - - 2011
The case presented here is intended to raise awareness of two uncommon coronary angiographic findings in the clinical context of acute coronary syndrome. The prevalence of patients presenting with spontaneous coronary dissection as the underlying cause of an ST-elevation myocardial infarction is low. It is typically found in women, often ...
Cuspidi Cesare - - 2011
Abstract Background. Left atrial (LA) enlargement is a powerful risk factor for cardiovascular diseases; little information is available about its prevalence and correlates in subjects free of overt cardiac disease seen in echocardiographic practice. Aim. We evaluated the prevalence of LA enlargement (LAE) and the relationship with left ventricular (LV) ...
Payne Christopher J - - 2011
BACKGROUND: Twelve-lead electrocardiography is a standard preoperative investigation for patients undergoing major surgery. There is uncertainty and debate over the usefulness of this test for stratifying postoperative cardiac risk. The aim of this study was to investigate the correlation between an abnormal electrocardiogram (ECG) and the postoperative cardiac event rate. ...
Lo Ada - - 2011
Sarcoidosis is a multisystem granulomatous disease of unknown atiology and cardiac involvement can occur. Echocardiographic abnormalities, such as left ventricular dysfunction, segmental wall thinning, ventricular aneurysm, or valvular abnormalities are often subtle until the later stages of the disease. However, sarcoid has a predilection to cause ventricular arrhythmias or conduction ...
Zhang Yue-Li - - 2011
Aortico-left ventricular tunnel (ALVT) is a rare cardiac abnormality. This article presents an adult case of ALVT with aortic ostium lying above the left-noncommissure which was diagnosed with live three-dimensional echocardiography (3DE). Live 3DE has shown its value in providing more detailed information. (Echocardiography, ****;**:E1-E3).
Cotter Paul E - - 2011
Ischemic stroke in younger people is common, and often remains unexplained. There is a well-documented association between unexplained stroke in younger people, and the presence of a patent foramen ovale. Therefore, in the absence of a clear cause of stroke, the heart is often assessed in detail for such lower ...
Philip Saji - - 2011
Left ventricular false tendons (LVFTs) are fibrous or fibromuscular bands stretching across the left ventricle (LV) from the ventricular septum to the papillary muscle or LV free wall but not connecting, like the chordae tendinae, to the mitral leaflet. LVFTs have become the focus of studies and discussions since the ...
Thomas Collins R R - - 2012
This study aimed to identify the anatomic and pathologic structural cardiac abnormalities in conjoined twins and to focus on those that have prevented the successful separation of conjoined hearts. A retrospective review was undertaken to examine consecutive cases of thoracopagus conjoined twins with conjoined hearts evaluated at The Children's Hospital ...
Stankovic Ivan - - 2011
BACKGROUND: Wellens syndrome refers to a distinct electrocardiographic pattern of deeply inverted or biphasic T waves in the anterior precordial leads, in the presence of critical proximal stenosis of the left anterior descending coronary artery (LAD). The natural history of the syndrome is an extensive myocardial infarction within weeks of ...
Ruano Pérez R - - 2012
To determine the clinical utility of the gated myocardial perfusion SPECT to detect silent ischemia in asymptomatic diabetic patients without previous coronary events and to evaluate the prognosis of this population. A retrospective study of 56 asymptomatic diabetics referred for a gated myocardial perfusion SPECT for diagnosis of ischemic disease ...
Al-Zaiti Salah S - - 2011
Altered ventricular repolarization and cardiovascular mortality are closely correlated, and recent novel findings show that a distorted T wave loop morphology is also strongly correlated with subsequent onset of myocardial infarction among patients with stable angina. Therefore, we hypothesized that an abnormal T wave complexity ratio (CR) can indicate vulnerability ...
Wen Zhu-Zhi - - 2011
OBJECTIVES: The study aimed to investigate the predictive value of the combination of high-sensitivity C-reactive protein (hs-CRP) and apolipoprotein B (apoB)/apoA-1 ratio for the outcomes of coronary angiography (CAG), echocardiography and oral glucose tolerance tests (OGTTs). DESIGN AND METHODS: Hs-CRP, apoB, apoA-1, and the profiles of CAG, echocardiography and OGTTs ...
Du Wenhua - - 2011
We sought to investigate the role of two-dimensional stress echocardiography in the early assessment of myocardial contusion. For this purpose, 12 dogs, weighing 11.36 ± 1.50 kg, were selected and the myocardial contusion was experimentally induced. Two-dimensional dobutamine stress echocardiography (DSE) was used to detect abnormal myocardial motions segments at time phases of ...
Regueiro Ander - - 2011
BACKGROUND: Chagas' disease is becoming a public health problem in Europe because of migratory movements. Cardiac magnetic resonance (CMR) has emerged as a non-invasive tool to assess cardiac tissue characteristics. There is scarce data available on CMR in patients with Chagas' disease. OBJECTIVE: To describe CMR findings in patients with ...
Bersani Iliana - - 2011
We present a five-year-old boy with an unremarkable medical history who was incidentally found to have bradycardia and electrocardiographic signs of right axial deviation. Initial echocardiogram showed left displacement of the cardiac apex with slight enlargement of the right ventricle, while frontal chest radiograph showed a lucent area between the ...
Wolff Gregory A - - 2011
Physiologic changes incurred by pregnancy can cause severe decompensation in the parturient with underlying cardiac disease. The result is increased morbidity and mortality for both mother and child. Appropriate anesthetic management can significantly impact these outcomes. This review systematically presents the pathophysiology, peripartum risk, and anesthetic management in the puerperium ...
Leo Troy - - 2011
: To demonstrate the prevalence and patterns of ST elevation (STE) in ambulatory individuals and athletes and compare the clinical outcomes. : Retrospective cohort study. ST elevation was measured by computer algorithm and defined as ≥0.1 mV at the end of the QRS complex. Elevation was confirmed, and J waves ...
Fonfara S - - 2011
Leptin belongs to the group of adipokines and has recently attracted attention because of its effects on the cardiovascular system. Increased leptin concentrations are reported in obese dogs but its role in cardiac disease (CD) is not known. Therefore, we investigated leptin expression in blood samples from dogs with congestive ...
Iijima Kenichi - - 2011
Cardiac magnetic resonance demonstrated myocardial damage within the left ventricle (LV) in a patient with cardiac sarcoidosis. During inflammation, ST-segment elevation was observed in her ECG. The ST-segment deviation was attenuated following disappearance of the abnormal Gallium-67 uptake in the LV, suggesting transmural LV voltage gradient was a cause of ...
Fang Xiangshao - - 2011
OBJECTIVES: Though there is evidence to implicate that the mitochondrion may play an important role in the development of postresuscitation myocardial dysfunction, limited data are available regarding the ultrastructural alterations of the mitochondria, mitochondrial energy-producing ability, and their relationship to postresuscitation myocardial dysfunction. This study was designed to determine whether ...
Behaghel Albin - - 2011
Hypocalcaemia is a rare cause of reversible heart failure. We reported a 76-year-old woman who had a severe systolic heart failure. She had severe hypocalcaemia due to hypoparathyroidism after thyroidectomy. Echocardiography showed a dilated left ventricle with a depressed left ventricular ejection fraction. Serum calcium level was low without other ...
Díaz Infante Ernesto E Unidad de Arritmias, Servicio de Cardiología, Hospital Universitario Virgen Macarena, Sevilla, - - 2011
Premature ventricular contractions originating in the right ventricular outflow tract may respond poorly to pharmacological treatment, and ablation using conventional fluoroscopically-guided systems may be complicated by the difficulty in inducing arrhythmias. We describe the use of a non-contact mapping system to ablate difficult-to-induce premature ventricular contractions originating in the right ...
López-Alvarez Jordi - - 2011
A 12-week-old male Golden Retriever was presented with signs of right-sided congestive heart failure and a grade V/VI left craniosternal systolic murmur. Echocardiography identified a double-chambered right ventricle and dilated coronary sinus (CS) running into an inter-atrial chamber. This was confirmed to be an imperforate cor triatriatum dexter (CTD) by ...
Kwofie Michael A - - 2011
T-wave alternans (TWA) has been investigated as a marker for susceptibility to lethal ventricular arrhythmia. In this article, we studied intracardiac TWA and ischemia as predictors of spontaneous ventricular tachycardia (VT) or ventricular fibrillation (VF) in a canine model of coronary artery occlusion (CAO). Anesthetized, open-chest dogs were studied. Electrograms ...
Matyal Robina - - 2011
Assessment of diastolic function should be a component of a comprehensive perioperative transesophageal echocardiographic examination. Abnormal diastolic function exists in >50% of patients presenting for cardiac and high-risk noncardiac surgery, and has been shown to be an independent predictor of adverse postoperative outcome. Normalcy of systolic function in 50% of ...
Martis Roshan J - - 2011
Electrocardiogram (ECG) is the P-QRS-T wave which indicates the electrical activity of the heart. The subtle changes in the amplitude and duration of the ECG signal depict the cardiac abnormality. It is very difficult to decipher these minute changes by the naked eye. Hence, a computer-aided diagnosis system will help ...
Sidek Khairul Azami - - 2011
This paper presents a person identification mechanism in irregular cardiac conditions using ECG signals. A total of 30 subjects were used in the study from three different public ECG databases containing various abnormal heart conditions from the Paroxysmal Atrial Fibrillation Predicition Challenge database (AFPDB), MIT-BIH Supraventricular Ar-rthymia database (SVDB) and ...
Borlaug Barry A - - 2011
Nearly half of all patients who have heart failure have preserved ejection fraction (HFpEF). Patients who have HFpEF tend to be older, female, and hypertensive, and characteristically display increased ventricular and arterial stiffening. In this article, we discuss the pathophysiology of abnormal ventriculoarterial stiffening and how it affects ventricular function, ...
Wakili Reza - - 2011
Atrial fibrillation (AF) is an extremely common cardiac rhythm disorder that causes substantial morbidity and contributes to mortality. The mechanisms underlying AF are complex, involving both increased spontaneous ectopic firing of atrial cells and impulse reentry through atrial tissue. Over the past ten years, there has been enormous progress in ...
Fujita Shuhei - - 2011
This report describes a 2-year-old girl with congenitally corrected transposition of the great arteries (ccTGA) who presented with transient complete atrioventricular (AV) block after a mild chest blow. Running around the house with her older sister, she fell to the floor. Her sister also fell and landed on her. The ...
Yarbrough William M - - 2012
Aortic valve stenosis is a common cause of left ventricular pressure overload, a pathologic process that elicits myocyte hypertrophy and alterations in extracellular matrix composition, both of which contribute to increases in left ventricular stiffness. However, clinical and animal studies suggest that increased myocardial extracellular matrix fibrillar collagen content occurs ...
Zastrow Arne - - 2011
We report on a patient suffering from chronic anorexia nervosa who in the course of treatment showed elevated high-sensitive troponin T, creatine kinase and most markedly N-terminal pro-brain natriuretic peptide (NT-proBNP). Elevated enzymes improved significantly throughout the course of treatment without cardiac specific medication but exceeded the normal range for ...
Delgado Gabriel A - - 2011
The precise cause of takotsubo cardiomyopathy (TC) remains controversial. Plaque rupture with transient thrombotic occlusion of a transapical left anterior descending coronary artery (LAD) has been advanced as a potential mechanism. To explore this hypothesis, the investigators analyzed data from 11 patients prospectively enrolled in the Rhode Island Takotsubo Cardiomyopathy ...
Merabet Yasmina - - 2011
Gated radionuclide ventriculography (RNV), combined with inter- and intraventricular dyssynchrony measurement by phase analysis, is able to evidence right and left ventricular mechanical cardiac disorders and may contribute to the diagnosis of arrhythmogenic right ventricular dysplasia (ARVD). Nevertheless, the patients referred for suspicion of ARVD on the basis of symptoms, ...
Summers Matthew R - - 2011
Aims Coronary endothelial dysfunction (ED), by predisposing to abnormal vasomotion, may cause chest pain in individuals with non-obstructed coronary arteries. The aim of this study was to correlate the magnitude of coronary ED with the presence and extent of inducible myocardial ischaemia using body surface electrocardiogram (ECG) mapping in symptomatic ...
Tsutsumi Takeshi - - 2011
BACKGROUND: Ventricular late potentials (VLPs) have been known to be a predictor of lethal ventricular arrhythmias (L-VAs); however, detection of other arrhythmogenic signals within the QRS complex remains obscure. OBJECTIVE: The aim of this study was to evaluate whether abnormal intra-QRS high frequency powers (IQHFP) within the QRS complex become ...
Youn Young-Nam - - 2011
BACKGROUND: Left ventricular diastolic dysfunction (DD) causes adverse outcomes after cardiac surgery; however, the effects of DD during off-pump coronary artery bypass grafting (OPCAB) are not well understood. We aimed to assess the influence of DD on early mortality and morbidity of patients undergoing OPCAB. METHODS: This prospective observational study ...
Patel Sandeep M - - 2011
Understanding the precise distribution of the regional wall motion abnormality (RWMA) in apical ballooning syndrome (ABS) is important because the cardiomyopathy can mimic an acute anterior ST-elevation myocardial infarction (STEMI). The aim of the study was to quantify the severity and distribution of RWMA in ABS, compare it to anterior ...
Borges-Cancel William - - 2011
Left ventricular non-compaction cardiomyopathy (LVNC) is a rare disorder characterized by a thick myocardial wall with two distinct layers consisting of compacted and noncompacted myocardium. The major clinical manifestations of LVNC have been described as heart failure, cardiac arrhythmias, and cardioembolic events. In this report we present a case of ...
Owen Mallory - - 2011
Newborns with complex congenital heart defects are at high risk for developing neurological abnormalities. It is important to understand the timing, progression, and extent of these abnormalities to better elucidate their potential impact on neurodevelopment, and their implications for early screening and intervention. This review synthesizes the recent literature describing ...
Shim Chi Young - - 2011
Vascular stiffening of the large arteries is a common feature of human aging. Increased aortic stiffness with age may contribute to pathological changes in the left ventricle and this can induce ventricular stiffening. Vascular-ventricular stiffening combined with abnormal arterial-cardiac interaction is considered an important pathophysiology of heart failure with a ...
Daniele Stefania - - 2011
BACKGROUND: We assessed the prognostic value of coronary flow reserve (CFR) estimated by single-photon emission computed tomography (SPECT) in patients with suspected myocardial ischemia. METHODS AND RESULTS: Myocardial perfusion and CFR were assessed in 106 patients using dipyridamole/rest Tc-99m sestamibi SPECT and follow-up was obtained in 103 (97%) patients. Four ...
Weiner Rory B - - 2011
Background The European Society of Cardiology (ESC) recently published revised criteria for ECG interpretation in the athlete. Objective To examine the performance of the 2010 ESC ECG criteria in a population of athletes undergoing preparticipation cardiovascular disease screening. Methods University athletes (n=508) underwent routine medical history/physical examination and ECG before ...
Aletras Anthony H - - 2011
In hypertrophic cardiomyopathy (HCM), myocardial abnormalities are commonly heterogeneous. Two patterns of late gadolinium enhancement (LGE) have been reported: a bright "confluent" and an intermediate intensity abnormality termed "diffuse," each representing different degrees of myocardial scarring. We used MRI to study the relation between intramural cardiac function and the extent ...
Ahn Byung-Hoon - - 2011
BACKGROUND: There has been no systematic study that carefully investigates the characteristic features of abnormal cervical vestibular-evoked myogenic potential (cVEMP) response associated with the AICA territory infarction. OBJECTIVES: To investigate the frequency, the characteristic patterns of abnormal cVEMP associated with AICA territory infarction, and the crucial site for producing abnormal ...
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