Search Results
Results 501 - 550 of 2339
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Tayyareci Yelda - - 2009
OBJECTIVES: The aim of the study was to assess validity of tissue Doppler imaging (TDI)-derived right ventricular (RV) myocardial systolic velocities in early detection of RV systolic dysfunction in chronic obstructive pulmonary disease (COPD). METHODS: Ninety COPD patients (50 pure COPD and 40 with right heart failure [RHF]) and 40 ...
Feissel Marc - - 2009
BACKGROUND: The aim of this study was to assess the most relevant echocardiographic parameter for the clinical diagnosis of acute dyspnea due to left-heart dysfunction. METHODS: Transthoracic echocardiography was performed in 88 patients in sinus rhythm admitted for respiratory distress. Two experts determined the cause of dyspnea as cardiogenic (26 ...
Kiotsekoglou Anatoli A Department of Cardiac and Vascular Sciences, St George's University of London, Cranmer Terrace, London SW17 0RE, - - 2009
Previous studies provided evidence about left ventricular systolic and diastolic dysfunction in adults with Marfan syndrome (MFS). However, in the literature, data on right ventricular and bi-atrial diastolic function are limited. We aimed to investigate whether, in the absence of significant valvular disease, diastolic dysfunction is present not only in ...
Kawaji Keigo K Department of Radiology and the Division of Cardiology, Weill Cornell Medical College, New York, NY 10021, - - 2009
Cardiac magnetic resonance (CMR) is established for assessment of left ventricular (LV) systolic function but has not been widely used to assess diastolic function. This study tested performance of a novel CMR segmentation algorithm (LV-METRIC) for automated assessment of diastolic function. A total of 101 patients with normal LV systolic ...
Biswas Shankar K - - 2009
(123)I-beta-methyl-iodophenyl pentadecanoic acid (BMIPP) and (99m)Tc-Tetrofosmin (TF) mismatch designated as stunned myocardium having both systolic and diastolic components. The degree of mismatch might reflect subsequent functional improvement, and this study was designed to unravel the impact of mismatched defect score (MMDS) on recovery of both systolic and diastolic function following ...
Mu Yuming Y Department of Echocardiography, First Affiliated Hospital, Xinjiang Medical University, Urmuqi, China. - - 2010
To investigate two-dimensional ultrasound speckle tracking imaging (STI) in evaluating values of early changes in left ventricular diastolic function in patients with essential hypertension (EH). Seventy-five EH patients with left ventricular normal geometry (LVN), including 38 cases with nonleft atrial enlargement (NLAE) and 37 cases with left atrial enlargement (LAE), ...
Gunes Yilmaz - - 2009
BACKGROUND: Microvascular and endothelial dysfunction have been implicated for coronary slow flow (CSF). Nebivolol, besides its beta-receptor blocking activity, causes an endothelium-dependent vasodilatation through increased nitric oxide release. METHODS: This study included 27 patients with CSF and 27 subjects with normal coronary arteries. Segmental functions of the left ventricle (LV) ...
Moreo Antonella A Ohio State University, Columbus, Ohio 43210, - - 2009
Fibrosis is a common end point of many pathological processes affecting the myocardium and may alter myocardial relaxation properties. By measuring myocardial fibrosis with cardiac magnetic resonance and diastolic function with Doppler echocardiography, we sought to define the influence of fibrosis on left ventricular diastolic function. Two hundred four eligible ...
Tsai Wei-Chuan - - 2009
BACKGROUND: We hypothesized that contraction of the LA wall could be documented by speckle tracking and could be applied for assessment of LA function. This study tried to identify the association between LA longitudinal strain (LAS) and strain rate (LASR) measured by speckle tracking with paroxysmal atrial fibrillation (PAF). METHODS: ...
Kosmala W - - 2009
AIMS/HYPOTHESIS: Weight excess and insulin resistance mediate the link between obesity and left ventricular dysfunction. We investigated the effect and mechanisms of lifestyle modification on left ventricular function changes in obese patients. METHODS: Reduction of body weight and insulin resistance was sought using a behavioural intervention programme including dietary restrictions ...
Baosheng Guo - - 2009
The aim of this study was to evaluate the usefulness of two-dimensional echocardiography in observing the left ventricular apical thin point (LVATP) and to view the change in thickness and width of the LVATP during the cardiac cycle. Transthoracic echocardiography was performed in 32 healthy adult volunteers to observe the ...
Park Jong Hun - - 2009
Anthracyclines are effective drugs that are widely used in pediatric cancer treatment. Previous studies have demonstrated that exposure to low-dose anthracyclines (<300 mg/m(2)) induces a progressive decrease in cardiac function during long-term follow-up. The goal of this study was to assess left ventricular function using vector velocity imaging (VVI) in ...
Witt Nils - - 2010
BACKGROUND: Right ventricular (RV) involvement in patients with ST elevation myocardial infarction (STEMI) is a clinically important problem. The aim of this study was to evaluate the use of tricuspid annular velocity assessed by Doppler tissue imaging (DTI) as a marker of RV involvement in patients with a first STEMI. ...
Holland David J - - 2009
AIMS: Previous research has described differences in left ventricular (LV) systolic tissue velocity between genders. This study aimed to determine the association between LV tissue velocity and LV size in healthy controls and in those with type 2 diabetes (T2DM). METHODS AND RESULTS: LV tissue velocities were measured in 71 ...
Perles Zeev - - 2010
Intracardiac echogenic foci (ECFs), probably representing microcalcifications of the papillary muscles, are a common finding in fetal ultrasonic screening examinations. Their significance is unclear, and their value as markers for chromosomal anomalies is debatable. It also is unknown whether ECFs predict abnormal cardiac performance. This prospective study analyzed and compared ...
Baykan Merih - - 2009
BACKGROUND: The aim of this study was to assess left ventricular (LV) function and the Tei index by tissue Doppler imaging (TDI), and also to evaluate the relationship of thrombolysis in myocardial infarction (TIMI) frame count (TFC) with the Tei index and LV function in patients with slow coronary flow ...
Shizukuda Yukitaka - - 2009
Little is known about the early mechanisms mediating left ventricular (LV) diastolic dysfunction in patients with hereditary hemochromatosis (HH). However, the increased oxidative stress related to iron overload may be involved in this process, and strain rate (SR), a sensitive echocardiography-derived measure of diastolic function, may detect such changes. we ...
Odland Hans Henrik HH Department of Pediatric Research, Rikshospitalet University Hospital, Oslo, Norway. - - 2010
Global hypoxia may affect regions of the neonatal heart during systole and diastole differently. In the first study, the aim was to assess longitudinal myocardial function in newborn pigs during global hypoxia and recovery. In the second study, invasive hemodynamic data were evaluated and compared with tissue velocities and acceleration. ...
Bogunovic N - - 2009
The purpose of this study is to assess the incremental value of tissue Doppler (TDI) derived displacement curves (TDint) compared to TDI velocity curves (TDvel) for the evaluation of left ventricular (LV) dyssynchrony (LVD). About 25 patients (pts.) with systolic heart failure were studied by TDvel and TDint. Four TDI ...
Zhang L - - 2009
Echocardiography with Doppler is the most commonly performed non-invasive cardiac imaging test in patients with suspected or documented heart failure (HF), and plays a pivotal role in their assessment and management. Two- and three-dimensional echocardiography are commonly used to quantitatively assess cardiac volumes, left ventricular ejection fraction (LVEF), stroke volume ...
El Samady Maged Mohamed - - 2009
A 7 year-old girl was admitted with history of low-grade fever, weight loss and occasional cough for the last 6 months. Tuberculosis was suspected, for which antituberculous treatment was initiated. Chest X-ray demonstrated calcification of the pericardium with chest miliary shadowing. CT chest was done showing very fine sharply defined ...
Nakajima Makoto - - 2009
BACKGROUND: The usefulness and safety of coronary flow velocity reserve (CFVR) in patients with acute ischemic stroke were examined. MATERIAL/METHODS: We studied 36 patients with acute ischemic stroke. Transthoracic Doppler recording of diastolic coronary flow velocity was performed at baseline and after maximal vasodilation by adenosine triphosphate infusion. CFVR was ...
Caiani E G - - 2009
Parabolic flight (PF) elicits changes in hydrostatic pressure gradients, resulting in increase (at 0Gz) or decrease (at 1.8Gz) in cardiac preload. The magnitude of these changes on left ventricular (LV) and atrial (LA) volumes, as well as on myocardial velocities, strain and strain rates, is largely unknown. Using real-time 3D ...
Espinoza Andreas - - 2010
Detection of myocardial ischaemia during and after cardiac surgery remains a challenge. Echocardiography is more sensitive in ischaemia detection than echocardiography (ECG) and haemodynamic monitoring, but demands repeated examinations for monitoring over time. We have developed and validated an ultrasonic system that permits continuous real-time assessment of myocardial ischaemia using ...
Cölkesen Yücel - - 2009
OBJECTIVES: The aim of our study was to evaluate the influence of lung resection on cardiac functions by using tissue Doppler echocardiography. STUDY DESIGN: Nineteen consecutive patients (15 males, 4 females; mean age 55+/-8 years) undergoing major lung surgery (16 lobectomy, 3 pneumonectomy) were evaluated in a prospective design. Malignant ...
Fazel Poorya - - 2009
Tissue Doppler imaging was used to evaluate the physiological and morphological response in athletes whose cardiac system must not only adapt to intense cardiovascular demands but also support sudden, transient changes in cardiac output. A total of 45 professional hockey players with a mean age of 24 years underwent a ...
Larsen L U - - 2009
OBJECTIVES: Intrauterine growth restriction (IUGR) is associated with cerebroplacental redistribution (CPR), fetal stress and poor outcome, all of which may be related to dysfunction of the fetal myocardium. The aim of this study was to specifically assess myocardial function in IUGR fetuses with CPR in comparison with normal fetuses using ...
Naujorks A A - - 2009
OBJECTIVES: Myocardial tissue Doppler (MTD) is a technique for the measurement of myocardial velocities in systole and diastole. This study evaluates the use of MTD in the assessment of cardiac diastolic function in fetuses with intrauterine growth restriction (IUGR) with placental insufficiency and in appropriate-for-gestational age (AGA) fetuses with hypertensive ...
Futai Rie - - 2009
Angiotensin II receptor blockers (ARBs) are suggested to be protective against myocardial hypertrophy and fibrosis, although such beneficial effects remain to be elucidated in the human heart. The aim of the present study was to examine the effect of a novel ARB, olmesartan, on myocardial function of the left ventricle ...
Olsen Niels Thue - - 2009
BACKGROUND: Myocardial velocities can be measured with both pulsed-wave tissue Doppler (PWTD) and color tissue Doppler (CTD) echocardiography. We aimed to (A) to explore which of the two methods better approximates true tissue motion and (B) to examine the agreement and the reproducibility of the two methods in a routine ...
Di Bello Vitantonio - - 2009
The new echocardiographic techniques for the study of physiopathological intramyocardial phenomena include video densitometry (VD), integrated backscatter (IBS), and color Doppler myocardial imaging (CDMI). Being more independent from cardiac load and from rotational and translational heart motion, these new sensible, noninvasive techniques such as CDMI and IBS show a real ...
Gaspar Ant??nio - - 2009
Lymphoma is usually recognized as the third most frequent metastatic malignancy involving the heart. In recent years, the incidence of cardiac lymphoma has increased, mainly because of HIV-infected patients. We present a case of secondary cardiac lymphoma in an HIV patient presenting with heart failure. Transthoracic echocardiography showed increased left ...
Matyal Robina - - 2009
To assess the association of perioperative cardiac dysfunction during elective vascular surgery with postoperative outcome. Patients with normal systolic function can have isolated diastolic dysfunction. Routine preoperative evaluation of left ventricular (LV) function does not include an assessment of diastolic function for risk stratification. We hypothesized that perioperative assessment of ...
Gunes Yilmaz - - 2009
Downregulation of glucose and fatty acid oxidation occurs in heart failure (HF). Trimetazidine reduces fatty acid oxidation and increases glucose oxidation. In this single-blind study, trimetazidine, 20 mg three times per day (n = 51) or placebo (n = 36) was added to treatment of 87 HF patients receiving optimal ...
Cua Clifford L - - 2009
Three neonatal patients with left-sided congenital diaphragmatic hernia (CDH) were evaluated with echocardiography pre- and postsurgical correction using tissue Doppler imaging (TDI). Tissue Doppler imaging parameters demonstrated improvement after surgery in both left- and right-sided myocardial performance index (MPI); furthermore, both left and right MPI correlated with clinical course in ...
Saccheri María C MC Division of Cardiology, Hospital of the Government of the City of Buenos Aires Dr. Cosme Argerich, Buenos Aires, Argentina. - - 2009
Tissue Doppler imaging (TDI) parameters of peak myocardial velocities (S', E', and A') has been employed to assess the regional left ventricular myocardial function. The global function index (GFI) derived from TDI has been recently employed to distinguish the different etiologies of left ventricular hypertrophy. To analyze whether the GFI ...
de Gregorio Cesare - - 2010
β-Thalassemia Major (βTM) is a hereditary chronic haemolytic anaemia that requires multiple blood transfusions all along lifetime. Late complication of this treatment is tissue iron overload (IO), mostly located on the reticulo-endothelial system, joints, liver, endocrine glands and the heart. In some patients, IO is responsible for heart failure. Echocardiography ...
Caldwell Bryan J - - 2009
BACKGROUND: The anisotropy of cardiac tissue is a key determinant of 3D electric propagation and the stability of activation wave fronts in the heart. The electric properties of ventricular myocardium are widely assumed to be axially anisotropic, with activation propagating most rapidly in the myofiber direction and at uniform velocity ...
Eroglu Elif - - 2009
OBJECTIVE: Cigarette smoking is one of the major risk factors for coronary artery disease. However, chronic smoking has additional cardiac adverse effects independent of coronary atherosclerosis. We assessed the possible effects of chronic smoking on left and right ventricular (LV, RV) long-axis function using Doppler myocardial imaging (DMI). METHODS: Forty ...
Greco Stefania - - 2009
BACKGROUND: Tei index (TI) is a Doppler parameter which reflects combined systolic and diastolic function. We aimed to study the relationship between TI, both traditional and tissue Doppler imaging (TDI) echocardiographic parameters and neurohormonal profile in outpatients with diastolic dysfunction expressed by an abnormal transmitral flow pattern. METHODS AND RESULTS: ...
Amoozgar Hamid - - 2009
Myocarditis is a well-recognized component of Kawasaki disease, with left ventricular dysfunction occurring in more than half of patients during the acute phase. The purpose of this study was to evaluate myocardial function in patients with Kawasaki disease using pulsed tissue Doppler imaging (TDI). Twenty-five patients with the diagnosis of ...
Mantziari A - - 2010
To examine left ventricular (LV) function in elite young athletes in relation to structural adaptation to prolonged intense training. Conventional echocardiography and tissue Doppler imaging (TDI) were performed in 15 elite rowers and 12 sedentary matched controls. Rowers had increased LV mass index, septal (12 vs 10 mm, P<0.005) and ...
Marsan Nina Ajmone - - 2009
Detailed information about the absolute temporal occurrence of myocardial motion and deformation events during the cardiac cycle is still lacking. However, the normal time range of these parameters may be of great importance as a reference for detecting and interpreting mechanical dyssynchrony and for identifying a delayed contraction in case ...
Halvorsen C P - - 2009
AIM: To perform a 10-year follow up of cardiac structure and function after twin-to-twin transfusion syndrome (TTTS)--a severe foetal circulatory complication associated with myocardial hypertrophy in the recipient twin. METHODS: Cardiac dimensions, systolic and diastolic function as assessed by echocardiography including flow and tissue Doppler velocimetry in 22 healthy survivors ...
Hasegawa Takuya - - 2009
OBJECTIVES: We sought to investigate the existence of a time difference in myocardial relaxation between the subendocardium and subepicardium in patients with and without myocardial hypertrophy. BACKGROUND: Regional differences in mechanical and electrical properties between the subendocardium and subepicardium have been described for the left ventricle in animals. However, this ...
Bi Xiaojun - - 2009
The value of two-dimensional strain echocardiography for assessing left ventricular regional systolic function in breast cancer patients who were treated with epirubicin was evaluated. A total of 116 breast cancer patients were divided into 3 groups: Thirty-eight patients in group A were given epirubicin (Epi) of 120-340 mg/m(2), 42 patients ...
Su Ho-Ming - - 2009
Right brachial pre-ejection period (rbPEP), brachial-ankle pulse wave velocity (baPWV), and right brachial ejection time (rbET) can be automatically determined from an ABI-form device. The aims of this study are to test the applicability of baPWV-derived myocardial performance index (MPI) (defined as the ratio of rbPEP divided by its own ...
Sozen Ahmet Bilge - - 2009
BACKGROUND: Turner's syndrome (TS), the most frequent congenital anomaly in newborn girls, is associated with various cardiovascular abnormalities, predominantly bicuspid aortic valves and aortic coarctation. The causes of the left ventricular hypertrophy (LVH) and ECG findings associated with TS are unknown. We used echocardiography to assess cardiac structure and function ...
Fernandes José Maria G - - 2009
BACKGROUND: The Doppler-derived myocardial performance index (MPI) has been used in the evaluation of left ventricular (LV) function in several diseases. In patients with isolated diastolic dysfunction, the diagnostic utility of this index remains unclear. The aim of this study was to determine the diagnostic utility of MPI in patients ...
Efstratiadis Stilianos - - 2009
BACKGROUND: Nesiritide is recombinant human B-type natriuretic peptide with vasodilatory effects used in patients with decompensated congestive heart failure. We sought to evaluate the effects of nesiritide on left ventricular diastolic function in heart failure patients. METHODS AND RESULTS: Twenty-five heart failure patients underwent left heart catheterization (using a pressure-volume ...
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