Abstract：
BACKGROUND:The morning hours are associated with increased cardiovascular (CV) risk, and vascular endothelial function (VEF) is a strong predictor of CV disease. A diurnal rhythm in VEF has been established but the morning variation in VEF is not well-documented. Thus, we tested if VEF is impaired across the vulnerable morning period. METHODS:After overnight fasts, eight healthy men (age 26.3 ± 3 yr) underwent assessments of VEF under standardized testing conditions every 2 h from 0700 to 1300 h on two separate days. VEF was estimated following 5 min brachial artery occlusions by hyperemic flow-mediated dilation (FMD). RESULTS:There was no significant change in FMD or hyperemic shear stimulus across the 6 h vulnerable period on either day, despite changes in physical activity and meals across these periods. CONCLUSION:In this healthy group of young men, VEF is stable across the vulnerable morning period when typical behaviors occurred (breakfast and physical activity). Future research should focus on the roles of sleep, physical inactivity during sleep and endogenous circadian rhythm in VEF.
journal_name
Cardiovasc Ultrasoundjournal_title
Cardiovascular ultrasoundauthors
Thosar SS,Wiggins CC,Shea SA,Wallace JPdoi
10.1186/s12947-015-0036-1subject
Has Abstractpub_date
2015-10-05 00:00:00pages
42issn
1476-7120pii
10.1186/s12947-015-0036-1journal_volume
13pub_type
杂志文章abstract：BACKGROUND:The developments in echocardiography or ultrasound cardiography (UCG) have improved our clinical capabilities. However, advanced hardware and software capabilities have resulted in UCG facilities of dubious clinical benefits. Is tissue Doppler echocardiography (TDE) is one such example? PRESENTATION OF THE ...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-2-12
更新日期：2004-08-12 00:00:00
abstract：BACKGROUND:Blood flow between the right and left ventricles is subject to the continuity equation and systolic ventricular interdependence. Quantification of this relationship might aid in understanding inter-ventricular function. The purpose of this study was to evaluate and quantify ventricular interdependence by dir...
journal_title：Cardiovascular ultrasound
pub_type： 临床试验,杂志文章
doi：10.1186/1476-7120-9-42
更新日期：2011-12-20 00:00:00
abstract：:In the standard accepted concept, contractility is the intrinsic ability of heart muscle to generate force and to shorten, independently of changes in the preload or afterload with fixed heart rates. At molecular level the crux of the contractile process lies in the changing concentrations of Ca2+ ions in the myocardi...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章,评审
doi：10.1186/1476-7120-3-27
更新日期：2005-09-08 00:00:00
abstract：BACKGROUND:There is strong evidence that left atrial (LA) size is a prognostic marker in a variety of heart diseases. Recently, real-time three-dimensional echocardiography (RT3DE) has been reported as a useful tool for studying the phasic changes of the left atrial volumes. The aim of this study was to investigate the...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-9-38
更新日期：2011-11-24 00:00:00
abstract：OBJECTIVE:Cardiac resynchronization therapy is proven efficacious in patients with heart failure (HF). Presence of biventricular HF is associated with a worse prognosis than having only left ventricular (LV) HF and pacing might deteriorate heart function. The aim of the study was to assess a possible significance of ri...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-9-28
更新日期：2011-10-26 00:00:00
abstract：BACKGROUND:Intracardiac echocardiography (ICE) is a useful imaging modality that is now being used more widely to assist in the percutaneous closure of atrial septal defects (ASD) and patent foramen ovales (PFO). CASE PRESENTATION:A 42 year old lady with a history of transient ischaemic attacks and migraine underwent ...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-5-30
更新日期：2007-09-25 00:00:00
abstract：BACKGROUND:Ultrasound contrast agents (UCAs) allow the enhancement of vascular definition, thereby providing more diagnostic information. LK565 is a new second-generation UCA based on synthetic polymers of aspartic acid which is eliminated from the blood stream via phagocytosis. LK565 forms very stable air-filled micro...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-2-16
更新日期：2004-09-10 00:00:00
abstract：BACKGROUND:Though hemodialysis (HD) acutely improves cardiac function, the impact of background diseases like coronary artery disease (CAD) and Type 2 diabetes (DM) in the setting of end-stage renal disease (ESRD) is not known. Tissue velocity echocardiography (TVE) offers a fast choice to follow changes in myocardial ...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-4-9
更新日期：2006-02-02 00:00:00
abstract：BACKGROUND:In the last recent years a new percutaneous procedure, the MitraClip, has been validated for the treatment of mitral regurgitation. MitraClip procedure is a promising alternative for patients unsuitable for surgery as it reduces the risk of death related to surgery ensuring a similar result. Few data are pre...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-11-13
更新日期：2013-05-04 00:00:00
abstract：BACKGROUND:Myocardial contractility can be investigated using longitudinal peak strain. It can be calculated using the Doppler-derived TDI method and the non-Doppler method based on tissue tracking on B-mode images. Both are validated and show good reproducibility, but no comparative analysis of their results has yet b...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-5-7
更新日期：2007-02-07 00:00:00
abstract：BACKGROUND:Systemic sclerosis (SSc) is an autoimmune chronic disease characterized by diffuse fibrosis involving several organs, including heart. Aim of our study was to analyze left ventricular (LV) myocardial deformation, by use of 2D strain, in asymptomatic SSc patients with normal LV ejection fraction. METHODS:We ...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-11-6
更新日期：2013-02-03 00:00:00
abstract：BACKGROUND:Although echocardiography has been incorporated into the diagnostic algorithm of patients with suspected infective endocarditis (IE), systematic usage in clinical practice remains ill defined. To determine the diagnostic accuracy of detecting vegetations using harmonic transthoracic echocardiography (hTTE) a...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-5-20
更新日期：2007-05-19 00:00:00
abstract：:Echocardiography is one of the most important diagnostic testing in cardiology. The presence of a breast implant overlying heart can cause significant impairment of the echocardiographic acoustic window. Breast implants are increasing in popularity in the USA and the Federal Drug and Food Administration (FDA) just app...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章,评审
doi：10.1186/1476-7120-5-9
更新日期：2007-02-23 00:00:00
abstract：:In this case report we describe a rare case of right atrium myxoma that coexisted with antiphospholipid syndrome in a young woman. We describe the unusual findings and diagnostic challenges combined with a review of the literature. ...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-7-47
更新日期：2009-10-11 00:00:00
abstract：:A high incidence of left ventricular diastolic dysfunction and increased risk of cardiovascular events have been reported in patients with diabetes mellitus. Sodium glucose cotransporter 2 (SGLT2) inhibitors selectively inhibit kidney glucose and sodium reabsorption, and cardiovascular benefits of SGLT2 inhibitors bey...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/s12947-019-0177-8
更新日期：2019-11-13 00:00:00
abstract：BACKGROUND:A history of previous cardiac disease increases the maternal mortality risk by as much as 100%. There is no consensus on the absolute contraindications to vaginal delivery in valvular heart disease, but central regional anesthesia is traditionally considered contraindicated in patients with severe aortic ste...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/s12947-020-00226-x
更新日期：2020-11-02 00:00:00
abstract：OBJECTIVE:Correlate the anatomic features of atrioventricular septal defect with echocardiographic images. MATERIALS AND METHODS:Sixty specimen hearts were studied by sequential segmental analysis. Echocardiograms were performed on 34 patients. Specimen hearts with findings equivalent to those of echocardiographic ima...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-6-33
更新日期：2008-06-24 00:00:00
abstract：BACKGROUND:Left ventricular free wall rupture occurs in up to 10% of the in-hospital deaths following myocardial infarction. It is mainly associated with posterolateral myocardial infarction and its antemortem diagnosis is rarely made. Contrast echocardiography has been increasingly used for the evaluation of myocardia...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-4-7
更新日期：2006-01-26 00:00:00
abstract：BACKGROUND:Aortic valve stenosis (AS) is the most common primary valvular heart disease leading to surgical or percutaneous aortic valve replacement (AVR) in Europe and its prevalence keeps growing. While other risk factors in severe AS are well documented, little is known about the prognostic value of left atrial (LA)...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/s12947-020-00231-0
更新日期：2021-01-02 00:00:00
abstract：:Global and regional left ventricular (LV) systolic dysfunction is a marker of coronary artery disease (CAD), which is conventionally assessed using two-dimensional echocardiography. Tissue Doppler imaging (TDI) has emerged as an adjunct tool in the diagnosis of regional wall motion abnormalities from CAD. We performed...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章,meta分析,评审
doi：10.1186/1476-7120-10-47
更新日期：2012-11-30 00:00:00
abstract：:Persistent left superior vena cava is rare but important congenital vascular anomaly. It results when the left superior cardinal vein caudal to the innominate vein fails to regress. It is most commonly observed in isolation but can be associated with other cardiovascular abnormalities including atrial septal defect, b...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章,评审
doi：10.1186/1476-7120-6-50
更新日期：2008-10-10 00:00:00
abstract：OBJECTIVES:To describe the findings and evaluate appropriateness of a carotid artery study including the measurement of IMT, the presence of atherosclerotic plaque, and their correlation with cardiovascular risk factors. METHODS:555 patients (220 men; 67.06 +/- 12.44 years) were included in the study. 120 patients (21...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-6-52
更新日期：2008-10-16 00:00:00
abstract：:Miniaturization has evolved in the creation of a pocket-size imaging device which can be utilized as an ultrasound stethoscope. This study assessed the additional diagnostic power of pocket size device by both experts operators and trainees in comparison with physical examination and its appropriateness of use in comp...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-8-51
更新日期：2010-11-26 00:00:00
abstract：:To make assessment of paravalvular aortic leakage (PVL) after transcatheter aortic valve implantation (TAVI) more uniform the second Valve Academic Research Consortium (VARC) recently updated the echocardiographic criteria for mild, moderate and severe PVL. In the VARC recommendation the assessment of the circumferent...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章,评审
doi：10.1186/s12947-016-0080-5
更新日期：2016-09-06 00:00:00
abstract：BACKGROUND:While echocardiographic grading of left ventricular (LV) diastolic dysfunction (DD) is used every day, the relationship between echocardiographic DD grade and hemodynamic abnormalities is uncertain. METHODS:We identified 460 consecutive patients who underwent transthoracic echocardiography within 24 h of el...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/s12947-015-0023-6
更新日期：2015-06-24 00:00:00
abstract：BACKGROUND:A hybrid approach to minimally invasive perventricular closure of VSD in infants is safe and effective, and has been performed under guidance of transesophageal echocardiography (TEE). We applied transthoracic echocardiographic (TTE) guidance to this hybrid approach, and compare results guided by TTE with th...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/1476-7120-11-8
更新日期：2013-03-11 00:00:00
abstract：:The growing need for coronary evaluation has raised interest in non-radioactive, non-invasive monitoring systems. In particular, radiation exposure during coronary investigations has been shown to be a possible cause of an enhanced risk of secondary tumors. Literature search has indicated that transthoracic echocardio...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章,评审
doi：10.1186/s12947-016-0048-5
更新日期：2016-01-19 00:00:00
abstract：BACKGROUND:Use of preoperative echocardiography may help to identify patients with increased cardiac risk, who may benefit from modification of perioperative plan. The objective of our study was to evaluate the reliability of preoperative focused cardiac ultrasound (FoCUS) performed by an anaesthetist with basic ultras...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/s12947-015-0039-y
更新日期：2015-11-20 00:00:00
abstract：:This review article is aimed at comparing the results of histopathological and clinical imaging studies to assess coronary collateral circulation in humans. The role of collaterals, as emerging from morphological studies in both normal and atherosclerotic coronary vessels, is described; in addition, present role and f...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章,评审
doi：10.1186/1476-7120-3-6
更新日期：2005-03-01 00:00:00
abstract：BACKGROUND:Dual imaging stress echocardiography, combining the evaluation of wall motion and coronary flow reserve (CFR) on the left anterior descending artery (LAD), and computed tomography coronary angiography (CTCA) are established techniques for assessing prognosis in chest pain patients. In this study we compared ...
journal_title：Cardiovascular ultrasound
pub_type： 杂志文章
doi：10.1186/s12947-015-0013-8
更新日期：2015-04-21 00:00:00
