2,180 Hits in 7.4 sec

An Integrated Software Application for Non-invasive Assessment of Local Aortic Haemodynamic Parameters

Mateusz Florkow, Jorge Mariscal Harana, Arna van Engelen, Torben Schneider, Isma Rafiq, Hubrecht de Bliek, Jordi Alastruey, Rene Botnar
2016 Procedia Computer Science  
Non-invasive assessment of haemodynamic data, such as pressure and flow profiles, is helpful in detecting cardiac disease at an early stage.  ...  The tool was evaluated for inter-observer agreement on one healthy volunteer, and results are shown for one patient with an aortic coarctation.  ...  Acknowledgements This research has been supported by an EPSRC Technology Strategy Board CR&D Grant (EP/L505304/1) and an EPSRC Grant EP/K031546/1.  ... 
doi:10.1016/j.procs.2016.07.002 fatcat:yzduucfqenfgrltdogkpikuyje

Contemporary perioperative haemodynamic monitoring

Qianyun Pang, Jan Hendrickx, Hong-Liang Liu, Jan Poelaert
2019 Anaesthesiology Intensive Therapy  
This review aims to present the clinical applications of different haemodynamic monitoring techniques, discuss advantages and disadvantages, and provide guidance to help the clinician select those techniques  ...  Haemodynamic monitoring is the cornerstone in the optimization of tissue perfusion and the prevention of deteriorating metabolism.  ...  Conflict of interest: none.  ... 
doi:10.5114/ait.2019.86279 pmid:31268276 fatcat:mn4cxbtxhzdkrnv5o2ako3snwi

Computational fluid dynamics modelling in cardiovascular medicine

Paul D Morris, Andrew Narracott, Hendrik von Tengg-Kobligk, Daniel Alejandro Silva Soto, Sarah Hsiao, Angela Lungu, Paul Evans, Neil W Bressloff, Patricia V Lawford, D Rodney Hose, Julian P Gunn
2015 Heart  
CFD modelling is apposite for minimally-invasive patient assessment.  ...  , for example, wall shear stress.  ...  Figure 4 was kindly provided by Dr Alberto Marzo, University of Sheffield.  ... 
doi:10.1136/heartjnl-2015-308044 pmid:26512019 pmcid:PMC4717410 fatcat:nvi4g5bbcffi7gvqapy3nclpja

Non‐invasive measurement of reservoir pressure parameters from brachial‐cuff blood pressure waveforms

Xiaoqing Peng, Martin G. Schultz, Dean S. Picone, Nathan Dwyer, J. Andrew Black, Philip Roberts‐Thomson, James E. Sharman
2018 The Journal of Clinical Hypertension  
This should enable widespread application to determine the clinical significance, but there is significant room for refinement of the method.  ...  However, whether RP and XSP can be derived non-invasively from operator-independent cuff device measured brachial or central BP waveforms has never been examined.  ...  concordance of non-invasive cuff RP with intra-aortic RP (both brachial-cuff and central-cuff measurements, and both RP peak and RP integral assessments), but with cuff underestimation.  ... 
doi:10.1111/jch.13411 pmid:30450732 pmcid:PMC8031070 fatcat:hluk5g7axrfpvmrvrkid57pdm4

Advanced flow MRI: emerging techniques and applications

M. Markl, S. Schnell, C. Wu, E. Bollache, K. Jarvis, A.J. Barker, J.D. Robinson, C.K. Rigsby
2016 Clinical Radiology  
Magnetic resonance imaging (MRI) techniques provide non-invasive and non-ionising methods for the highly accurate anatomical depiction of the heart and vessels throughout the cardiac cycle.  ...  techniques for the assessment of cardiac function and wall motion (cine imaging), aortic and pulmonary dimensions and geometry (MR angiography), as well as aortic and pulmonary valve morphology and dynamics  ...  Whole-heart 4D flow MRI techniques allow for a non-invasive comprehensive assessment of cardiovascular haemodynamics in the heart and surrounding great vessels (see Fig. 5 ).  ... 
doi:10.1016/j.crad.2016.01.011 pmid:26944696 pmcid:PMC4930408 fatcat:uj2am6anmzbw3b5gqehsepapqy

Determination of optimal atrioventricular delay for cardiac resynchronization therapy using acute non-invasive blood pressure

Zachary I. Whinnett, Justin E.R. Davies, Keith Willson, Anthony W. Chow, Rodney A. Foale, D. Wyn Davies, Alun D. Hughes, Darrel P. Francis, Jamil Mayet
2006 Europace  
Aims In this study, we apply non-invasive blood pressure (BP) monitoring, by continuous finger photoplethysmography (Finometer), to detect directly haemodynamic responses during adjustment of the atrioventricular  ...  Methods and results Twelve patients were studied with six re-attending for reproducibility assessment.  ...  Same-day reproducibility for the non-invasive haemodynamic method was 3 ms (standard deviation 8 ms).  ... 
doi:10.1093/europace/eul017 pmid:16635996 fatcat:2gnz7k2cwray5hmqgnxdsyxh5m

Predicting fluid responsiveness in mechanically ventilated children under general anaesthesia using dynamic parameters and transthoracic echocardiography

E. Pereira de Souza Neto, S. Grousson, F. Duflo, C. Ducreux, H. Joly, J. Convert, C. Mottolese, F. Dailler, M. Cannesson
2011 British Journal of Anaesthesia  
△PP, PPV, △POP, PVI, △Vpeak, and aortic velocity-time integral were recorded before and after volume expansion (VE).  ...  Patients were considered to be responders to VE when the aortic velocity -time integral increased more than 15% after VE. Results.  ...  Conflict of interest M.C. is a consultant for Masimo Corporation, Edwards Lifesciences, and Covidien.  ... 
doi:10.1093/bja/aer090 pmid:21525016 fatcat:uugadksk5jgsbdizhmxdtm45bq

Reduction in coronary microvascular resistance through cardiac resynchronization and its impact on chronic reverse remodelling of left ventricle in patients with non-ischaemic cardiomyopathy

Mitsuaki Itoh, Toshiro Shinke, Akihiro Yoshida, Amane Kozuki, Asumi Takei, Koji Fukuzawa, Kunihiko Kiuchi, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita (+5 others)
2015 Europace  
One week after implantation of the CRT device, coronary flow velocity and pressure in the left anterior descending coronary artery (LAD) and left circumflex coronary artery (LCx) were measured invasively  ...  Aims Left bundle branch block (LBBB) induces mechanical dyssynchrony, thereby compromising the coronary circulation in non-ischaemic cardiomyopathy.  ...  Acknowledgements The authors are grateful for the support of the entire staff of the electrophysiological and catheterization laboratories of the Kobe University Hospital.  ... 
doi:10.1093/europace/euu361 pmid:25662988 fatcat:4hnne346bfaqxhb55j3nqmxrae

Resynchronization therapy optimization by intracardiac impedance

M. Bocchiardo, D. Meyer zu Vilsendorf, C. Militello, M. Lippert, G. Czygan, P. Schauerte, F. Gaita, C. Stellbrink
2010 Europace  
Application of intracardiac impedance for automatic implantbased CRT optimization appears to be within reach.  ...  An external pacemaker measured impedance, and a micromanometer catheter measured LV and aortic pressure.  ...  Applications of intracardiac impedance for intraoperative lead site assessment, responder identification, and automatic CRT timing optimization appear feasible and should be investigated in further studies  ... 
doi:10.1093/europace/euq273 pmid:20667892 fatcat:i6k3suytdbb3jcnqg7cj7nbigm

Changes of central haemodynamic parameters during mental stress and acute bouts of static and dynamic exercise

C Lydakis, A Momen, C Blaha, S Gugoff, K Gray, M Herr, U A Leuenberger, L I Sinoway
2008 Journal of Human Hypertension  
Central aortic waveforms were assessed using SphygmoCor software.  ...  Also, there is limited data showing an increase of central arterial stiffness during acute mental stress.  ...  Disclosure/conflict of interest There are no financial interests relevant to the research or constituting a conflict of interest for any of the authors of this paper.  ... 
doi:10.1038/jhh.2008.4 pmid:18273040 fatcat:gzttgxh4tzf5lh56r7ecgxe4du

The role of ventricular-arterial coupling in cardiac disease and heart failure: assessment, clinical implications and therapeutic interventions. A consensus document of the European Society of Cardiology Working Group on Aorta & Peripheral Vascular Diseas

Ignatios Ikonomidis, Victor Aboyans, Jacque Blacher, Marianne Brodmann, Dirk L. Brutsaert, Julio A. Chirinos, Marco De Carlo, Victoria Delgado, Patrizio Lancelotti, John Lekakis, Dania Mohty, Petros Nihoyannopoulos (+12 others)
2019 European Journal of Heart Failure  
Traditionally, VAC is assessed by the non-invasive measurement of the ratio of arterial (Ea) to ventricular end-systolic elastance (Ees).  ...  Ventricular-arterial coupling (VAC) plays a major role in the physiology of cardiac and aortic mechanics, as well as in the pathophysiology of cardiac disease.  ...  However, we should acknowledge that cardiac catheterization provides more accurate measurement of Ea and Ees than non-invasive methods while non-invasive methods are applicable for repeated consecutive  ... 
doi:10.1002/ejhf.1436 pmid:30859669 fatcat:2r62r7cmujc4bhehzb23coftq4

A comparison of the non-invasive ultrasonic cardiac output monitor (USCOM) with the oesophageal Doppler monitor during major abdominal surgery

Luke E Hodgson, Lui G Forni, Richard Venn, Theophilus L Samuels, Howard G Wakeling
2015 Journal of the Intensive Care Society  
Consequently, reliable non-invasive estimation of the cardiac output could have far-reaching benefit.  ...  Concordance was 98%, using an exclusion zone of <10% Á SV ODM . 135 measurements gave median SV USCOM 80 ml (interquartile range 65-93 ml) and SV ODM 86 ml (69-100 ml); mean bias was 5.9 ml (limits of  ...  Funding The authors received no financial support for the research, authorship, and/or publication of this article.  ... 
doi:10.1177/1751143715610785 pmid:28979473 pmcid:PMC5606393 fatcat:czoeqee4hbcylgwt4flwjvult4

Fluid expansion improve ventriculo-arterial coupling in preload-dependent patients: a prospective observational study

Pierre Huette, Osama Abou-Arab, Dan Longrois, Pierre-Grégoire Guinot
2020 BMC Anesthesiology  
Fluid responsiveness patients had V-A coupling characterized by increase arterial elastance to ventricular elastance ratio, in relation to an increase arterial elastance.  ...  Arterial elastance changes were related to those of systemic vascular resistance (continue component) and of arterial compliance (pulsatile component).  ...  haemodynamic parameters in fluid responders and non-responders.  ... 
doi:10.1186/s12871-020-01087-7 pmid:32680470 fatcat:cbsdpdl3wzbxznkrupeoazieyq

Computational modelling for congenital heart disease: how far are we from clinical translation?

Giovanni Biglino, Claudio Capelli, Jan Bruse, Giorgia M Bosi, Andrew M Taylor, Silvia Schievano
2016 Heart  
They can provide an insight into complex flow phenomena, allow for testing devices into patientspecific anatomies ( pre-CHD or post-CHD repair) and generate predictive data.  ...  Novel techniques such as statistical shape modelling can further aid in the morphological assessment of CHD, risk stratification of patients and possible identification of new 'shape biomarkers'.  ...  The views expressed in this publication are those of the authors and not necessarily those of the NHS, the National Institute for Health Research or the Department of Health.  ... 
doi:10.1136/heartjnl-2016-310423 pmid:27798056 pmcid:PMC5284484 fatcat:ovbrhag5gfggpgd2a4hvqiudqu

Patient-specific haemodynamic simulations of complex aortic dissections informed by commonly available clinical datasets [article]

Mirko Bonfanti, Gaia Franzetti, Gabriele Maritati, Shervanthi Homer-Vanniasinkam, Stavroula Balabani, Vanessa Díaz-Zuccarini
2019 bioRxiv   pre-print
This study presents a new approach for the implementation of personalised CFD models using non-invasive, and oftentimes minimal, datasets commonly collected for AD monitoring.  ...  An innovative way to account for arterial compliance in rigid-wall simulations using a lumped capacitor is introduced, and a parameter estimation strategy for boundary conditions calibration is proposed  ...  meaningful using data that are acquired routinely and non-invasively.  ... 
doi:10.1101/593780 fatcat:wk2kdoisy5a7tdpcxodoz5s4ia
« Previous Showing results 1 — 15 out of 2,180 results