Results 21 to 30 of about 15,639 (222)

Microcirculatory Function in Nonhypertrophic and Hypertrophic Myocardium in Patients With Aortic Valve Stenosis

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background Left ventricular hypertrophy (LVH) has often been supposed to be associated with abnormal myocardial blood flow and resistance. The aim of this study was to evaluate and quantify the physiological and pathological changes in myocardial blood ...
Muhammad Sabbah, Niels Thue Olsen, Mikko Minkkinen, Lene Holmvang, Hans‐Henrik Tilsted, Frants Pedersen, Francis R. Joshi, Kiril Ahtarovski, Rikke Sørensen, Jesper James Linde, Lars Søndergaard, Nico Pijls, Jacob Lønborg, Thomas Engstrøm   +13 more
doaj   +1 more source

Extracorporeal Membrane Oxygenation Blood Flow and Blood Recirculation Compromise Thermodilution-Based Measurements of Cardiac Output

ASAIO journal (1992), 2021
The contribution of veno-venous (VV) extracorporeal membrane oxygenation (ECMO) to systemic oxygen delivery is determined by the ratio of total extracorporeal blood flow (Q˙EC) to cardiac output (Q˙).
M. Russ, Elvira Steiner, W. Boemke, T. Busch, C. Melzer-Gartzke, M. Taher, Jenelle Badulak, S. Weber-Carstens, E. Swenson, R. Francis, P. Pickerodt   +10 more
semanticscholar   +1 more source

Could Impedance Cardiography be a Non-Invasive Alternative Method of Measuring Cardiac Output in Patients with Pulmonary Hypertension?

Anatolian Journal of Cardiology, 2023
Background: Pulmonary hypertension guidelines recommend invasive right heart catheterization for diagnosis and clinical follow-up. Our aim was to compare non-invasive impedance cardiography with invasive techniques for cardiac index measurements and ...
Burcu Yağmur, Evrim Şimşek, Meral Kayıkçıoğlu, Elif İlkay Yüce, Yeşim Bayazıt Candemir, Sanem Nalbantgil, Nesrin Moğolkoç, Levent Can, Hakan Kültürsay   +8 more
doaj   +1 more source

Unveiling the Microvasculature: The Index of Microcirculatory Resistance and Its Expanding Role in Cardiovascular Care. [PDF]

Catheter Cardiovasc Interv
ABSTRACT Index of microcirculatory resistance (IMR) is a cutting‐edge, wire‐based tool that advances the capability assessment of coronary microvascular function. By utilizing distal coronary pressure and mean transit time under maximal hyperemia, IMR delivers consistent, reproducible insights into the microvasculature's dynamic health.
Sohn J, Soderstrom MA, Ramirez A, Dean JH, Shah R, Roy D, Stone K, Vinas A, Ramsey B, Lin C, Chilton R.   +10 more
europepmc   +2 more sources

Normal Values of Thermodilution-Derived Absolute Coronary Blood Flow and Microvascular Resistance in Humans.

EuroIntervention, 2020
AIMS Absolute hyperemic coronary blood flow (Q, in mL/min) and resistance (R, in Woods Units, WU) can be measured invasively by continuous thermodilution. The aim of this study was to assess normal reference values of Q and R.
S. Fournier, D. Keulards, M. van 't Veer, I. Colaiori, G. Di Gioia, F. Zimmermann, T. Mizukami, S. Nagumo, M. Kodeboina, M. El Farissi, J. Zelis, J. Sonck, C. Collet, N. Pijls, B. de Bruyne   +14 more
semanticscholar   +1 more source

Comparative study of cardiac output measurement by regional impedance cardiography and thermodilution method in patients undergoing off pump coronary artery bypass graft surgery

Annals of Cardiac Anaesthesia, 2022
Background: An ideal CO monitor should be noninvasive, cost effective, reproducible, reliable during various physiological states. Limited literature is available regarding the noninvasive CO monitoring in open chest surgeries. Aim: The aim of this study
Amrita Guha, Dheeraj Arora, Yatin Mehta
doaj   +1 more source

Comparison between thermodilution and Fick methods for resting and exercise‐induced cardiac output measurement in patients with chronic dyspnea

Pulmonary Circulation, 2022
Studies comparing thermodilution (TD) and the direct Fick method (dFM) for cardiac output (CO) measurement are rare. We compared CO measurements between TD (2–5 cold water injections), the dFM, and indirect Fick method (iFM) at rest and during exercise ...
Susanna Desole, Anne Obst, Dirk Habedank, Christian F. Opitz, Christine Knaack, Franziska Hortien, Alexander Heine, Beate Stubbe, Ralf Ewert   +8 more
doaj   +1 more source

Non-invasive Oscillometry-Based Estimation of Cardiac Output – Can We Use It in Clinical Practice?

Frontiers in Physiology, 2021
While invasive thermodilution techniques remain the reference methods for cardiac output (CO) measurement, there is a currently unmet need for non-invasive techniques to simplify CO determination, reduce complications related to invasive procedures ...
Alexander Reshetnik, Jonida Gjolli, Markus van der Giet, Friederike Compton   +3 more
doaj   +1 more source

Comparison of two minimally invasive cardiac-output monitoring systems with different algorithms

Fujita Medical Journal, 2016
Objectives: Minimally invasive haemodynamic monitoring is important in goal-directed therapy. The algorithms used by the FloTrac/Vigileo (FV) and lithium dilution cardiac output rapid (LiDCOrapid) (LR) measurement systems for cardiac output (CO ...
Yoshitaka Hara, Osamu Nishida, Tomoyuki Nakamura, Naohide Kuriyama, Chizuru Yamashita, Junpei Shibata, Hidefumi Komura   +6 more
doaj   +1 more source

Measuring Absolute Coronary Flow and Microvascular Resistance by Thermodilution: JACC Review Topic of the Week.

Journal of the American College of Cardiology
Diagnosing coronary microvascular dysfunction remains challenging, primarily due to the lack of direct measurements of absolute coronary blood flow (Q) and microvascular resistance (Rμ).
M. Belmonte, E. Gallinoro, N. Pijls, D. Bertolone, D. Keulards, M. Viscusi, T. Storozhenko, T. Mizukami, T. Mahendiran, R. Seki, Stephane Fournier, A. D. de Vos, J. Adjedj, Emanuele Barbato, J. Sonck, P. Damman, Thomas R. Keeble, S. Fawaz, A. Gutiérrez-Barrios, V. Paradies, F. Bouisset, Morton J. Kern, W. Fearon, C. Collet, B. de Bruyne   +24 more
semanticscholar   +1 more source