Results 11 to 20 of about 174,209,824 (205)

Index of microcirculatory resistance in the assessment of coronary microvascular dysfunction in hypertrophic cardiomyopathy

Revista Portuguesa de Cardiologia, 2022
Introduction and objectives: Coronary microvascular dysfunction (CMD) is one of the most important pathophysiological features in hypertrophic cardiomyopathy (HCM).
Sílvia Aguiar Rosa, Miguel Mota Carmo, Luís Rocha Lopes, Eunice Oliveira, Boban Thomas, Luis Baquero, Rui Cruz Ferreira, António Fiarresga   +7 more
doaj   +4 more sources

Measurement of Pulmonary Flow Reserve and Pulmonary Index of Microcirculatory Resistance for Detection of Pulmonary Microvascular Obstruction [PDF]

PLoS ONE, 2010
The pulmonary microcirculation is the chief regulatory site for resistance in the pulmonary circuit. Despite pulmonary microvascular dysfunction being implicated in the pathogenesis of several pulmonary vascular conditions, there are currently no techniques for the specific assessment of pulmonary microvascular integrity in humans.
Ilsar, Rahn, Chawantanpipat, Chirapan, Chan, Kim H., Dobbins, Timothy A., Waugh, Richard, Hennessy, Annemarie, Celermajer, David S., Ng, Martin K. C.   +7 more
openaire   +6 more sources

Prognostic Value of the Index of Microcirculatory Resistance Measured After Primary Percutaneous Coronary Intervention [PDF]

Circulation, 2013
Background— Most methods for assessing microvascular function are not readily available in the cardiac catheterization laboratory. The aim of this study is to determine whether the Index of Microcirculatory Resistance (IMR), measured at the time of primary percutaneous coronary intervention, is predictive of ...
Fearon, W.F., Low, A.F., Yong, A.S., McGeoch, R., Berry, C., Shah, M.G., Ho, M.Y., Kim, H.-S., Loh, J.P., Oldroyd, K.G.   +9 more
openaire   +3 more sources

Invasive minimal Microvascular Resistance Is a New Index to Assess Microcirculatory Function Independent of Obstructive Coronary Artery Disease [PDF]

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2016
Background Coronary microcirculatory dysfunction portends a poor cardiovascular outcome. Invasive assessment of microcirculatory dysfunction by coronary flow reserve (CFR) and hyperemic microvascular resistance (HMR) is affected by coronary artery ...
Guus A. de Waard, Sukhjinder S. Nijjer, Martijn A. van Lavieren, Nina W. van der Hoeven, Ricardo Petraco, Tim P. van de Hoef, Mauro Echavarría‐Pinto, Sayan Sen, Peter M. van de Ven, Paul Knaapen, Javier Escaned, Jan J. Piek, Justin E. Davies, Niels van Royen   +13 more
doaj   +2 more sources

Angiography-Derived Index of Microcirculatory Resistance to Define the Risk of Early Discharge in STEMI

Circulation: Cardiovascular Interventions
BACKGROUND: Patients with ST-segment–elevation myocardial infarction but no coronary microvascular injury are at low risk of early cardiovascular complications (ECC). We aim to assess whether nonhyperemic angiography-derived index of microcirculatory resistance (NH-IMR angio ) could be
Scarsini, R, Kotronias, RA, Della Mora, F, Portolan, L, Andreaggi, S, Benenati, S, Marin, F, Sgreva, S, Comuzzi, A, Butturini, C, Pesarini, G, Tavella, D, Channon, KM, Garcia Garcia, HM, Ribichini, F, Banning, AP, De Maria, GL   +16 more
openaire   +5 more sources

Index of Microcirculatory Resistance as Predictor for Microvascular Functional Recovery in Patients with Anterior Myocardial Infarction

Journal of Korean Medical Science, 2012
IMR is useful for assessing the microvascular dysfunction after primary percutaneous coronary intervention (PCI). It remains unknown whether index of microcirculatory resistance (IMR) reflects the functional outcome in patients with anterior myocardial infarction (AMI) with or without microvascular obstruction (MO).This study was performed to evaluate ...
Yoo, Seung-Hoon, Yoo, Tae-Kyung, Lim, Hong-Seok, Kim, Mi-Young, Koh, Jong-Hoon   +4 more
openaire   +3 more sources

The role of the angiography-derived index of microcirculatory resistance in the prognosis of patients with dilated cardiomyopathy. [PDF]

Quant Imaging Med Surg, 2023
The coronary angiography-derived index of microcirculatory resistance (caIMR) is a novel noninvasive method to assess coronary microvascular dysfunction (CMD). However, the association between caIMR and the prognosis of patients with dilated cardiomyopathy (DCM) is unclear. We aimed to explore the role of the caIMR in evaluating the outcome of patients
Li M, Su H, Zuo Z, Zhang Z, Li M, Su F, Yao W, He Y, Kong X, Wang H.   +9 more
europepmc   +3 more sources

Corrigendum: Diagnostic performance of multi-branch coronary angiography-based index of microcirculatory resistance: a novel approach [PDF]

Frontiers in Medicine
Yongzhen Fan, Yongzhen Fan, Shuang Wang, Xinyong Cai, Xiaorong Hu, Xiaorong Hu, Jun Ma, Hongzhi Lan, Zhibing Lu, Zhibing Lu   +9 more
doaj   +2 more sources

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 ...
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   +3 more sources

Fractional Flow Reserve and Instantaneous Wave‐Free Ratio Predict Pathological Wall Shear Stress in Coronary Arteries: Implications for Understanding the Pathophysiological Impact of Functionally Significant Coronary Stenoses

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background The pathophysiological mechanism behind adverse outcomes associated with ischemia‐inducing epicardial coronary stenoses and microcirculatory dysfunction remains unclear. Wall shear stress (WSS) plays an important role in atherosclerotic plaque
Christopher C. Y. Wong, Ashkan Javadzadegan, Cuneyt Ada, Jerrett K. Lau, Ravinay Bhindi, William F. Fearon, Leonard Kritharides, Martin K. C. Ng, Andy S. C. Yong   +8 more
doaj   +1 more source