نتایج جستجو برای: lv velocity

تعداد نتایج: 158157  

Journal: :European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology 2008
Nihal Akar Bayram Bulent Ciftci Tahir Durmaz Telat Keles Ekrem Yeter Murat Akcay Engin Bozkurt

AIMS In this study, we aimed to assess left ventricular (LV) systolic and diastolic functions by tissue Doppler imaging (TDI) in patients with obstructive sleep apnoea syndrome (OSAS) and to investigate the effects of 6 month continuous positive airway pressure (CPAP) on LV systolic and diastolic functions. METHODS AND RESULTS We studied 28 new diagnosed moderate and severe OSAS patients (apn...

2017
Lida Feyz Bas M. van Dalen Marcel L. Geleijnse Nicolas M. Van Mieghem Ron T. van Domburg Joost Daemen

BACKGROUND Speckle tracking echocardiography (STE) is an echocardiography modality that is able to measure left ventricular (LV) characteristics, including rotation, strain and strain rate. Strain measures myocardial fibre contraction and relaxation. This study aims to assess the effect of renal sympathetic denervation (RDN) on functional myocardial parameters, including STE, and to identify po...

Journal: :Hypertension 2002
Weihong Tang Donna K Arnett Richard B Devereux Michael A Province Larry D Atwood Albert Oberman Paul N Hopkins Dalane W Kitzman

Although there is evidence that left ventricular (LV) function is genetically controlled, the contribution of familial factors to variation and covariation of LV diastolic filling, contractility, and structure is unknown. Single- and cross-trait sibling correlations were estimated using bivariate familial correlation models in 200 white (400 pairs) and 374 black (539 pairs) hypertensive sibship...

Journal: :European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology 2011
Jaroslav Meluzín Jan Sitar Jan Krístek Robert Prosecky Martin Pesl Helena Podrouzková Vladimír Soska Roman Panovsky Ladislav Dusek

AIMS Few data are available on the exercise-induced abnormalities of myocardial function in patients with exertional dyspnoea and normal left ventricular ejection fraction (LV EF). The main aims of this study were to determine the prevalence of isolated exercise-induced heart failure with normal ejection fraction (HFNEF) and to assess whether disturbances in LV or right ventricular longitudinal...

Journal: :American journal of physiology. Heart and circulatory physiology 2004
Jwari Ahn Jasmina Varagic Michel Slama Dinko Susic Edward D Frohlich

Increased dietary salt intake induces cardiac fibrosis in the spontaneously hypertensive rat (SHR), yet little information details its effects on left ventricular (LV) function. Additionally, young normotensive rats are more sensitive to the trophic effect of dietary sodium than older rats. Thus cardiac responses to salt loading were evaluated at two ages in the SHR; LV collagen content was als...

2013
Yan Deng Anil Pandit Raymond L. Heilman Harini A. Chakkera Marek J. Mazur Farouk Mookadam

BACKGROUND To quantify changes of left ventricular (LV) torsion in patients' pre and post kidney transplantation. METHODS A prospective study was conducted on 48 patients who received kidney transplantation for end stage renal disease and without myocardial infarction. The rotation, twist and torsion of LV were studied pre and post kidney transplantation (6 months post transplantation) using ...

Journal: :Circulation. Cardiovascular imaging 2013
Inga Voges Michael Jerosch-Herold Jürgen Hedderich Christopher Hart Colin Petko Jens Scheewe Ana Cristina Andrade Minh Pham Dominik Gabbert Hans-Heiner Kramer Carsten Rickers

BACKGROUND The elastic function of the aorta in patients with transposition of the great arteries after arterial switch operation (ASO) is suspected to be important for long-term prognosis. METHODS AND RESULTS Fifty-one patients and 34 controls were studied at 3.0 Tesla with MRI. Forty-three patients (12.8±6.9 years) underwent 1-stage ASO, 8 patients (23.8±6.9 years) had prior pulmonary arter...

Journal: :Radiology 2008
Heynric B Grotenhuis Jaap Ottenkamp Duveken Fontein Hubert W Vliegen Jos J M Westenberg Lucia J M Kroft Albert de Roos

PURPOSE To prospectively assess aortic dimensions, aortic elasticity, aortic valve competence, and left ventricular (LV) systolic function in patients after the arterial switch operation (ASO) by using magnetic resonance (MR) imaging. MATERIALS AND METHODS Informed consent was obtained from all participants for this local ethics committee-approved study. Fifteen patients (11 male patients, fo...

1996
Carl J. Grillmair

We present internal velocity dispersion determinations from high-resolution spectroscopic observations of a sample of nine globular clusters in M31. Comprehensive numerical simulations are used to show that the typical uncertainty of our velocity dispersion measurements is ∼5%. Using these new velocity dispersions together with structural parameters derived from HST observations, we estimate th...

Journal: :Journal of clinical ultrasound : JCU 2014
Kazunori Okada Taisei Mikami Sanae Kaga Masahiro Nakabachi Ayumu Abe Shinobu Yokoyama Hisao Nishino Mutsumi Nishida Chikara Shimizu Hiroyuki Iwano Satoshi Yamada Hiroyuki Tsutsui

BACKGROUND Left ventricular (LV) diastolic dysfunction is often observed in healthy older subjects without structural heart disease, although its exact mechanisms have not been established. A decrease in the aorto-septal angle (ASA), an alteration of LV shape due to aortic elongation, is also frequently seen in elderly subjects. The objective of this study was to evaluate whether it can contrib...

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