keyword
MENU ▼
Read by QxMD icon Read
search

Myocardial blood flow

keyword
https://www.readbyqxmd.com/read/29784125/catheter-directed-thrombolysis-for-pulmonary-embolism-the-state-of-practice
#1
Xi Xue, Akhilesh K Sista
Acute pulmonary embolism (PE) is a major public health problem. It is the third most common cause of death in hospitalized patients. In the United States, there are up to 600,000 cases diagnosed per year with 100,000-180,000 acute PE-related deaths. Common risk factors include underlying genetic conditions, acquired conditions, and acquired hypercoagulable states. Acute PE increases the pulmonary vascular resistance and the load on the right ventricle (RV). Increased RV loading causes compensatory RV dilation, impaired contractility, tachycardia, and sympathetic activation...
June 2018: Techniques in Vascular and Interventional Radiology
https://www.readbyqxmd.com/read/29780640/plasma-chemerin-levels-are-increased-in-st-elevation-myocardial-infarction-patients-with-high-thrombus-burden
#2
Ahmet Hakan Ateş, Uğur Arslan, Aytekin Aksakal, Ahmet Yanık, Metin Özdemir, Selim Kul
Objective: To investigate plasma chemerin levels in ST elevation myocardial infarction (STEMI) patients and find out possible relationships between plasma chemerin levels and angiographic characteristics. Patients and Methods: Ninety-seven consecutive patients who presented with STEMI and underwent primary percutaneous coronary intervention (PCI) with coronary stents were enrolled, and 30 age- and sex-matched patients with stable angina pectoris who underwent coronary angiography formed the control group...
2018: Cardiology Research and Practice
https://www.readbyqxmd.com/read/29774440/in-vivo-estimation-of-elastic-heterogeneity-in-an-infarcted-human-heart
#3
Gabriel Balaban, Henrik Finsberg, Simon Funke, Trine F Håland, Einar Hopp, Joakim Sundnes, Samuel Wall, Marie E Rognes
In myocardial infarction, muscle tissue of the heart is damaged as a result of ceased or severely impaired blood flow. Survivors have an increased risk of further complications, possibly leading to heart failure. Material properties play an important role in determining post-infarction outcome. Due to spatial variation in scarring, material properties can be expected to vary throughout the tissue of a heart after an infarction. In this study we propose a data assimilation technique that can efficiently estimate heterogeneous elastic material properties in a personalized model of cardiac mechanics...
May 17, 2018: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/29774406/reduced-global-myocardial-perfusion-reserve-in-dcm-and-hcm-patients-assessed-by-cmr-based-velocity-encoded-coronary-sinus-flow-measurements-and-first-pass-perfusion-imaging
#4
Michael Bietenbeck, Anca Florian, Zornitsa Shomanova, Claudia Meier, Ali Yilmaz
BACKGROUND: Coronary microvascular dysfunction (CMD) is an independent predictor of poor prognosis in patients suffering from dilative or hypertrophic cardiomyopathy (DCM/HCM). To assess CMD, quantitative myocardial first-pass perfusion (1P) cardiovascular magnetic resonance (CMR) can be performed. Coronary sinus flow (CSF) measurements at rest and during maximal vasodilatation are an alternative and well-validated approach for the quantification of global myocardial blood flow (MBF) in CMR...
May 17, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29764528/symptomatic-myocardial-bridging-a-frequently-occurring-coronary-variation-can-cause-severe-myocardial-ischaemia-in-affected-children-with-underlying-cardiac-conditions
#5
Alexandra Kiess, Marcel Vollroth, Farhad Bakhtiary, Hiroshi Seki, Martin Kostelka, Milan Djukic, Ingo Daehnert, Robert Wagner
Myocardial bridging is a congenital coronary artery anomaly in which the coronary artery has a partly "tunnelled" intramyocardial course. This tunnelling leads to compression of the affected vessel segment during ventricular systole. It is considered to be a benign variation of the norm in about 25% of the population caused by an aberrancy of embryologic coronary development. The bridging is also thought to cause severe cardiac conditions in a few of those affected. The series of six young patients presented here is the largest series so far to report on symptomatic myocardial bridging in children with different underlying heart diseases...
May 16, 2018: Cardiology in the Young
https://www.readbyqxmd.com/read/29761309/is-there-a-role-for-cardiac-positron-emission-tomography-in-hypertrophic-cardiomyopathy
#6
Paco E Bravo
Coronary microvascular dysfunction and, its functional consequence, myocardial ischemia are common pathologic features in patients with hypertrophic cardiomyopathy (HCM). Both have been commonly invoked as potential triggers of and/or contributors to the underlying pathophysiological processes leading to heart failure, and malignant ventricular arrhythmias. Positron emission tomography (PET) with myocardial blood flow quantification provides a unique opportunity to evaluate the integrity and function of the coronary microcirculation in HCM...
May 14, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29761012/an-overview-of-protective-strategies-against-ischemia-reperfusion-injury-the-role-of-hyperbaric-oxygen-preconditioning
#7
Ciprian Hentia, Alex Rizzato, Enrico Camporesi, Zhongjin Yang, Danina M Muntean, Dorel Săndesc, Gerardo Bosco
Introduction: Ischemia/reperfusion (I/R) injury, such as myocardial infarction, stroke, and peripheral vascular disease, has been recognized as the most frequent causes of devastating disorders and death currently. Protective effect of various preconditioning stimuli, including hyperbaric oxygen (HBO), has been proposed in the management of I/R. Methods: In this study, we searched and reviewed up-to-date published papers to explore the pathophysiology of I/R injury and to understand the mechanisms underlying the protective effect of HBO as conditioning strategy...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29755623/main-considerations-of-cardiogenic-shock-and-its-predictors-systematic-review
#8
REVIEW
Maria Christiane Valeria Braga Braile-Sternieri, Eliana Migliorini Mustafa, Victor Rodrigues Ribeiro Ferreira, Sofia Braile Sabino, Giovanni Braile Sternieri, Lucia Angelica Buffulin de Faria, Bethina Canaroli Sbardellini, Cibele Olegario Vianna Queiroz, Domingo Marcolino Braile, Idiberto Jose Zotarelli Filho
The mortality rate of post-infarction cardiogenic shock (CS) was 80.0-90.0%. Recent studies show a significant reduction of hospital mortality to approximately 50.0%. CS is defined as systemic tissue hypoperfusion resulting from systolic and/or diastolic heart dysfunction, the main cause of which is acute myocardial infarction (AMI). The main predictors are biological markers such as troponin, CKMB and lactate. A systematic literature review and meta-analysis is performed in order to present and correlate the main literary findings on CS and its evolution with possible changes in biomarkers such as troponin, lactate and CKMB...
April 2018: Cardiology Research
https://www.readbyqxmd.com/read/29747847/quantitative-myocardial-perfusion-imaging-versus-visual-analysis-in-diagnosing-myocardial-ischemia-a-ce-marc-substudy
#9
John D Biglands, Montasir Ibraheem, Derek R Magee, Aleksandra Radjenovic, Sven Plein, John P Greenwood
OBJECTIVES: This study sought to compare the diagnostic accuracy of visual and quantitative analyses of myocardial perfusion cardiovascular magnetic resonance against a reference standard of quantitative coronary angiography. BACKGROUND: Visual analysis of perfusion cardiovascular magnetic resonance studies for assessing myocardial perfusion has been shown to have high diagnostic accuracy for coronary artery disease. However, only a few small studies have assessed the diagnostic accuracy of quantitative myocardial perfusion...
May 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29747323/-efficacy-of-bare-metal-stent-for-treating-focal-coronary-artery-aneurysm-complicating-with-severe-stenosis-in-single-coronary-artery
#10
S B Qiao, J Li, J G Cui, J S Yuan, S W Liu, J Zhao, F H Hu, W X Yang, H B Liu, Z W Sun, R L Gao
Objective: To investigate the efficacy of bare metal stent for treating focal coronary artery aneurysm complicating with severe stenosisin single coronary artery. Methods: This retrospective analysis was performed in 7 patients who were diagnosed as local coronary artery aneurysm complicating with severe stenosis(≥70%) in single coronary artery and treated with bare metal stent during the period from December 2012 to June 2015 in Fuwai Hospital. All 7 patients were male with age of (62±11) years old. During the interventional operation, the narrow parts were pre-expanded,and all patients received bare metal stents implantation to cover aneurysms...
April 24, 2018: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29746525/expression-of-adhesion-molecules-on-granulocytes-and-monocytes-following-myocardial-infarction-in-rats-drinking-white-wine
#11
Nikolina Režić-Mužinić, Angela Mastelić, Benjamin Benzon, Anita Markotić, Ivana Mudnić, Ivica Grković, Mia Grga, Ana Marija Milat, Nikola Ključević, Mladen Boban
Neutrophils and monocytes through their CD15s, CD11b and CD44 adhesion molecules are implicated in the initiation and resolution of cardiac inflammation as well as in healing processes after the myocardial infarction (MI). The aim of this study was to determine the effect of white wine consumption on granulocyte and monocyte CD15s, CD11b, and CD44 expression 24h after the surgically inflicted MI. Granulocytes and monocytes were analyzed by flow cytometry, using whole blood of male Sprague-Dawley rats that consumed white wine for 4 weeks...
2018: PloS One
https://www.readbyqxmd.com/read/29742506/neuregulin-1-promotes-myocardial-angiogenesis-in-the-rat-model-of-diabetic-cardiomyopathy
#12
Chun Gui, Zhi-Yu Zeng, Qi Chen, Ya-Wei Luo, Lang Li, Lin-Lin Chen
BACKGROUND/AIMS: Microvascular insufficiency takes a critical role in the development of diabetic cardiomyopathy (DCM). So this study was designed to investigate the effects of Neuregulin-1 (NRG-1) treatment on myocardial angiogenesis and the changes of VEGF/Flk1 and Ang-1/Tie-2 signaling in the rat model of DCM. METHODS: Diabetic rats were induced by a single intraperitoneal injection of Streptozotocin. 12 weeks after the diabetes induction, the rats with NRG-1 treatment were treated with tail vein injection of NRG-1 at the dose of 10µg/kg/d for consecutive 10 days...
May 4, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29739448/associations-between-endothelial-progenitor-cells-clinical-characteristics-and-coronary-restenosis-in-patients-undergoing-percutaneous-coronary-artery-intervention
#13
Fernando S Montenegro, Marcelo Correia, Fabiana Muccillo, Christina G Souza E Silva, Andrea De Lorenzo
OBJECTIVE: Endothelial progenitor cells (EPCs) are produced in the bone marrow and mobilized to the peripheral blood playing a key role in endothelial repair. The objective of this study was to evaluate circulating EPC before and after percutaneous coronary intervention (PCI) with stent implantation and their associations with coronary restenosis and adverse cardiovascular events. Venous blood was obtained before and the day after PCI. Quantification of total white blood count and identification of EPCs (CD45- CD34+ CD31+ CD133/2+ CD309+ ) through immunophenotyping by flow cytometry was performed...
May 8, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29734516/dermal-capillary-rarefaction-as-a-marker-of-microvascular-damage-in-patients-with-rheumatoid-arthritis-association-with-inflammation-and-disorders-of-the-macrocirculation
#14
Panagiota Anyfanti, Eugenia Gkaliagkousi, Areti Triantafyllou, Xenophon Zabulis, Panagiotis Dolgyras, Vasiliki Galanopoulou, Spyros Aslanidis, Stella Douma
OBJECTIVE: Capillary rarefaction is observed in various cardiovascular diseases, yet it remains understudied in RA, a chronic inflammatory disease accompanied by excess cardiovascular risk. We quantified capillary density in RA patients and explored potential associations with macrocirculatory disorders, inflammation and cardiovascular risk. METHODS: Dermal capillary density was assessed with nailfold capillaroscopy in RA and non-RA individuals, using specifically designed semiautomated software...
May 7, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29734153/clinical-impact-of-left-ventricular-diastolic-dysfunction-in-chronic-kidney-disease
#15
Tetsuya Ogawa, Kosaku Nitta
Left ventricular diastolic dysfunction (LVDD) frequently occurs in chronic kidney disease (CKD) and is associated with heart failure and higher mortality. LVDD is observed in patients with early stages of CKD and is associated with cardiovascular events, in patients undergoing incident hemodialysis in the absence of systolic function. The pathogenesis of CKD includes abnormal ventricular filling in diastole and a higher LV filling pressure (LVFP) because of LV hypertrophy (LVH), in addition to myocardial interstitial fibrosis...
2018: Contributions to Nephrology
https://www.readbyqxmd.com/read/29732653/the-regenerative-journey-of-pericytes-towards-clinical-translation
#16
REVIEW
William Cathery, Ashton Faulkner, Davide Maselli, Paolo Madeddu
Coronary artery disease (CAD) is the single leading cause of death worldwide. Advances in treatment and management have significantly improved patient outcomes. On the other hand, although mortality rates have decreased, more people are left with sequelae that require additional treatment and hospitalization. Moreover, patients with severe nonrevascularizable CAD remain with the only option of heart transplantation, which is limited by the shortage of suitable hearts. In recent years, cell-based regenerative therapy has emerged as a possible alternative treatment, with several regenerative medicinal products already in the clinical phase of development and other emerging as competitive preclinical solutions...
May 7, 2018: Stem Cells
https://www.readbyqxmd.com/read/29728334/intracoronary-infusion-of-alprostadil-and-nitroglycerin-with-targeted-perfusion-microcatheter-in-stemi-patients-with-coronary-slow-flow-phenomenon
#17
Xincheng Sheng, Song Ding, Heng Ge, Yujun Sun, Lingcong Kong, Jie He, Jun Pu, Ben He
BACKGROUND: The treating aims of ST-segment elevation myocardial infarction (STEMI) are vessels recanalization and coronary flow restoration. Coronary slow flow phenomenon (CSFP) is one of the common complications in STEMI patients after percutaneous coronary intervention (PCI) and leads to a higher incidence of adverse clinical outcomes. Alprostadil is a kind of liposomal prostaglandin E1 with beneficial effects on vasodilation, platelet disaggregation and fibrinolysis. But it still remains unclear that whether alprostadil can improve the coronary perfusion in STEMI patients with CSFP after PCI...
April 25, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29728013/coronary-and-peripheral-vasomotor-responses-to-mental-stress
#18
Muhammad Hammadah, Jeong Hwan Kim, Ibhar Al Mheid, Ayman Samman Tahhan, Kobina Wilmot, Ronnie Ramadan, Ayman Alkhoder, Mohamed Khayata, Girum Mekonnen, Oleksiy Levantsevych, Yasir Bouchi, Belal Kaseer, Fahad Choudhary, Mohamad M Gafeer, Frank E Corrigan, Amit J Shah, Laura Ward, Michael Kutner, J Douglas Bremner, David S Sheps, Paolo Raggi, Viola Vaccarino, Habib Samady, Kreton Mavromatis, Arshed A Quyyumi
BACKGROUND: Coronary microvascular dysfunction may contribute to myocardial ischemia during mental stress (MS). However, the role of coronary epicardial and microvascular function in regulating coronary blood flow (CBF) responses during MS remains understudied. We hypothesized that coronary vasomotion during MS is dependent on the coronary microvascular endothelial function and will be reflected in the peripheral microvascular circulation. METHODS AND RESULTS: In 38 patients aged 59±8 years undergoing coronary angiography, endothelium-dependent and endothelium-independent coronary epicardial and microvascular responses were measured using intracoronary acetylcholine and nitroprusside, respectively, and after MS induced by mental arithmetic testing...
May 3, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29724818/hypoxia-and-ischemia-promote-a-maladaptive-platelet-phenotype
#19
Scott J Cameron, Doran S Mix, Sara K Ture, Rachel A Schmidt, Amy Mohan, Daphne Pariser, Michael C Stoner, Punit Shah, Lijun Chen, Hui Zhang, David J Field, Kristina L Modjeski, Sandra Toth, Craig N Morrell
OBJECTIVE: Reduced blood flow and tissue oxygen tension conditions result from thrombotic and vascular diseases such as myocardial infarction, stroke, and peripheral vascular disease. It is largely assumed that while platelet activation is increased by an acute vascular event, chronic vascular inflammation, and ischemia, the platelet activation pathways and responses are not themselves changed by the disease process. We, therefore, sought to determine whether the platelet phenotype is altered by hypoxic and ischemic conditions...
May 3, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29721336/impact-of-admission-blood-glucose-on-coronary-collateral-flow-in-patients-with-st-elevation-myocardial-infarction
#20
Ozge Kurmus, Turgay Aslan, Berkay Ekici, Sezen Baglan Uzunget, Sukru Karaarslan, Asli Tanindi, Aycan Fahri Erkan, Ebru Akgul Ercan, Celal Kervancıoglu
In patients with acute myocardial infarction, glucose metabolism is altered and acute hyperglycemia on admission is common regardless of diabetes status. The development of coronary collateral is heterogeneous among individuals with coronary artery disease. In this study, we aimed to investigate whether glucose value on admission is associated with collateral flow in ST-elevation myocardial infarction (STEMI) patients. We retrospectively evaluated 190 consecutive patients with a diagnosis of first STEMI within 12 hours of onset of chest pain...
2018: Cardiology Research and Practice
keyword
keyword
88231
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"