Read by QxMD icon Read

myocardium at risk

Mangyuan Wang, Kai Chen, Xiao Chen, Liang Chen, Jiangping Song, ShengShou Hu
Arrhythmogenic right ventricular cardiomyopathy (ARVC) and dilated cardiomyopathy (DCM), despite being two dramatically different entities, have overlapping phenotypes. As it is easy to misdiagnose between ARVC and DCM, there is a need to establish a new differential diagnostic parameter to differentiate the two. We investigated the utility of endomyocardial biopsy (EMB) for the differential diagnosis, and our study had three aims. The first was to verify the EMB high diagnostic efficacy. The second was to investigate the EMB perforation risk at the right ventricle (RV) free wall of end-stage ARVC...
February 14, 2018: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
Cristina Basso, Kalliopi Pilichou, Barbara Bauce, Domenico Corrado, Gaetano Thiene
Arrhythmogenic cardiomyopathy (AC) is an inherited heart muscle disease characterized by myocardial atrophy and fibrofatty replacement of the ventricular myocardium, at risk of sudden cardiac death, particularly in the young and athletes. Because there is no "gold standard" to reach the diagnosis of AC, multiple categories of diagnostic information have been combined, including imaging, electrocardiographic changes, arrhythmias, tissue characterization, and family history. However, the routine use of contrast-enhanced cardiac magnetic resonance increasingly revealed left dominant AC, a variant that is not well addressed in the diagnostic criteria and still escapes clinical identification...
April 2018: Heart Failure Clinics
John Whitaker, Cory M Tschabrunn, Jihye Jang, Eran Leshem, Mark O'Neill, Warren J Manning, Elad Anter, Reza Nezafat
BACKGROUND: Myocardial infarction (MI) survivors are at risk of complications including heart failure and malignant arrhythmias. PURPOSE: We undertook serial imaging of swine following MI with the aim of characterizing the longitudinal left ventricular (LV) remodeling in a translational model of ischemia-reperfusion-mediated MI. ANIMAL MODEL: Eight Yorkshire swine underwent mid left anterior descending coronary artery balloon occlusion to create an ischemia-reperfusion experimental model of MI...
March 9, 2018: Journal of Magnetic Resonance Imaging: JMRI
Petar M Seferović, Mark C Petrie, Gerasimos S Filippatos, Stefan D Anker, Giuseppe Rosano, Johann Bauersachs, Walter J Paulus, Michel Komajda, Francesco Cosentino, Rudolf A de Boer, Dimitrios Farmakis, Wolfram Doehner, Ekaterini Lambrinou, Yuri Lopatin, Massimo F Piepoli, Michael J Theodorakis, Henrik Wiggers, John Lekakis, Alexandre Mebazaa, Mamas A Mamas, Carsten Tschöpe, Arno W Hoes, Jelena P Seferović, Jennifer Logue, Theresa McDonagh, Jillian P Riley, Ivan Milinković, Marija Polovina, Dirk J van Veldhuisen, Mitja Lainscak, Aldo P Maggioni, Frank Ruschitzka, John J V McMurray
The coexistence of type 2 diabetes mellitus (T2DM) and heart failure (HF), either with reduced (HFrEF) or preserved ejection fraction (HFpEF), is frequent (30-40% of patients) and associated with a higher risk of HF hospitalization, all-cause and cardiovascular (CV) mortality. The most important causes of HF in T2DM are coronary artery disease, arterial hypertension and a direct detrimental effect of T2DM on the myocardium. T2DM is often unrecognized in HF patients, and vice versa, which emphasizes the importance of an active search for both disorders in the clinical practice...
March 8, 2018: European Journal of Heart Failure
Till Huelnhagen, Min-Chi Ku, Henning Matthias Reimann, Teresa Serradas Duarte, Andreas Pohlmann, Bert Flemming, Erdmann Seeliger, Christina Eichhorn, Victor A Ferrari, Marcel Prothmann, Jeanette Schulz-Menger, Thoralf Niendorf
Hypertrophic cardiomyopathy (HCM) is the most common genetic disease of the myocardium and bares the risk of progression to heart failure or sudden cardiac death. Identifying patients at risk remains an unmet need. Recognizing the dependence of microscopic susceptibility on tissue microstructure and on cardiac macromorphology we hypothesized that myocardial T2 * might be altered in HCM patients compared to healthy controls. To test this hypothesis, myocardial T2 * -mapping was conducted at 7.0 Tesla to enhance T2 * -contrast...
March 5, 2018: Scientific Reports
Nadia A Farrag, Venkat Ramanan, Graham A Wright, Eranga Ukwatta
PURPOSE: Myocardial infarct (MI) may consist of an infarct core (IC) and a heterogeneous, semi-viable border zone (BZ). Patients with chronic MI in the left ventricular (LV) myocardium are at increased risk of developing ventricular arrhythmias, and may therefore qualify for implantable cardioverter defibrillator (ICD) therapy. Indices based on MI mass, as determined by cardiac magnetic resonance (CMR) imaging, are shown to be sensitive in predicting adverse ventricular arrhythmic events...
March 1, 2018: Medical Physics
Ji-Won Hwang, Jeong Hoon Yang, Young Bin Song, Taek Kyu Park, Joo Myung Lee, Ji-Hwan Kim, Woo Jin Jang, Seung-Hyuk Choi, Joo-Yong Hahn, Jin-Ho Choi, Joonghyun Ahn, Keumhee Carriere, Sang Hoon Lee, Hyeon-Cheol Gwon
INTRODUCTION AND OBJECTIVES: We sought to determine the association of reciprocal change in the ST-segment with myocardial injury assessed by cardiac magnetic resonance (CMR) in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). METHODS: We performed CMR imaging in 244 patients who underwent primary PCI for their first STEMI; CMR was performed a median 3 days after primary PCI. The first electrocardiogram was analyzed, and patients were stratified according to the presence of reciprocal change...
February 22, 2018: Revista Española de Cardiología
Andreas Boening, Lena Assling-Simon, Martina Heep, Kerstin Boengler, Bernd Niemann, Philippe Grieshaber
BACKGROUND: In patients undergoing surgical myocardial revascularization for acute myocardial infarction, excellent myocardial protection can be achieved by blood cardioplegia. We investigated the influence of age on cardiac function, metabolism, and infarct size using Buckberg's blood cardioplegia (BCP). METHODS: The hearts of male Wistar rats ("adult", age 3 months, n = 8; "senile", age 24 months, n = 8) were excised and mounted on a blood-perfused isolated heart apparatus...
February 10, 2018: Experimental Gerontology
Kai Zhang, Jingyan Zhang, Xurong Wang, Lei Wang, Michela Pugliese, Annamaria Passantino, Jianxi Li
BACKGROUND: Sheng Mai Yin (SMY), a well-known Chinese herbal medicine, is widely used to treat cardiac diseases characterized by the deficiency of Qi and Yin syndrome in China. SMY-based treatment has been derived from Traditional Chinese Medicine (TCM), officially recorded in the Chinese Pharmacopoeia. PURPOSE: We aimed to clarify whether SMY attenuates myocardial injury induced by adriamycin in Wistar rats with chronic heart failure (CHF). METHODS: To quantify ginsenoside Rg1, ophiopogonin D, ophiopogonin D', schisandrin by HPLC...
January 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Abhishek C Sawant, Aishwarya Bhardwaj, Kinjal Banerjee, Yash Jobanputra, Arnav Kumar, Parth Parikh, Krishna C Kandregula, Kanhaiya Poddar, Stephen G Ellis, Ravi Nair, John Corbelli, Samir Kapadia
OBJECTIVES: To determine if fractional flow reserve guided percutaneous coronary intervention (FFR-guided PCI) is associated with reduced ischemic myocardium compared with angiography-guided PCI. BACKGROUND: Although FFR-guided PCI has been shown to improve outcomes, it remains unclear if it reduces the extent of ischemic myocardium at risk compared with angiography-guided PCI. METHODS: We evaluated 380 patients (190 FFR-guided PCI cases and 190 propensity-matched controls) who underwent PCI from 2009 to 2014...
February 6, 2018: Catheterization and Cardiovascular Interventions
Laura Valls-Lacalle, Ignasi Barba, Elisabet Miró-Casas, Marisol Ruiz-Meana, Antonio Rodríguez-Sinovas, David García-Dorado
Inhibition of succinate dehydrogenase (SDH) with malonate during reperfusion reduces infarct size in isolated mice hearts submitted to global ischemia. However, malonate has toxic effects that preclude its systemic administration in animals. Here we investigated the effect of intracoronary malonate on infarct size in pigs submitted to transient coronary occlusion. Under baseline conditions, 50 mmol/L of intracoronary disodium malonate, but not lower concentrations, transiently reduced systolic segment shortening in the region perfused by the left anterior descending coronary artery (LAD) in open-chest pigs...
February 5, 2018: Scientific Reports
Regayip Zehir, Ahmet Güner, Mert Ilker Hayiroglu, Tugba Kemaloğlu Oz, Altug Osken, Huseyin Aksu, Sennur Unal Dayi, Gultekin Faik Hobikoğlu
BACKGROUND: Epicardial adipose tissue [EAT] is thought to be associated with extension and severity of coronary artery disease [CAD] and echocardiographic measurement of EAT thickness has been considered to be a possible cardiovascular risk indicator. ESC Task Force recommends further non-invasive testing in patients with an intermediate pre-test probability [PTP] for the diagnosis of CAD. AIM: The purpose of this study was to evaluate the clinical usefulness of performing EAT measurements in patients with a high-intermediate PTP...
February 5, 2018: Kardiologia Polska
Michał J Kubisa, Mateusz P Jezewski, Aleksandra Gasecka, Jolanta M Siller-Matula, Marek Postuła
Novel antiplatelet drugs, including ticagrelor, are being successively introduced into the therapy of atherothrombotic conditions due to their superiority over a standard combination of clopidogrel with acetylsalicylic acid in patients with acute coronary syndromes (ACS). A P2Y12 receptor antagonist, ticagrelor, is unique among antiplatelet drugs, because ticagrelor inhibits the platelet P2Y12 receptor in a reversible manner, and because it demonstrates a wide palette of advantageous pleiotropic effects associated with the increased concentration of adenosine...
2018: Therapeutics and Clinical Risk Management
He Li, Chunmei Wang, Jinghui Sun, Cong Liu, Ning Li, Jianguang Chen
Our previous study showed that pravastatin prevents ischemia and reperfusion-induced lethal ventricular fibrillation in rats. This study explored whether pravastatin decreases myocardial infarct size and this effect is associated with endothelial nitric oxide synthase (eNOS) expression in myocardium. Rats were treated with ischemia (30 minutes) and reperfusion (60 minutes) after chronic oral administration of pravastatin, fluvastatin, or vehicle once daily for 22 days. Electrocardiograms and blood pressure were continuously recorded, myocardial infarct size was measured by TTC-staining, and eNOS expression was measured by western blot...
2018: International Heart Journal
Harsh Agrawal, Richard Lange, Ruben Montanez, Soma Wali, Khan Omar Mohammad, Subrata Kar, Mohamed Teleb, Debabrata Mukherjee
BACKGROUND: Chronic total occlusion (CTO) of a coronary artery is defined as an occluded segment with no antegrade flow and a known or estimated duration of at least 12 weeks. OBJECTIVE: We considered the current literature describing the indications and clinical outcomes for de-novo CTO- percutaneous coronary intervention (PCI), and discuss the role of CTO-PCI and future directions for this procedure. METHOD: Databases (PubMed, the Cochrane Library, Embase, EBSCO, Web of Science, and CINAHL were searched and relevant studies of CTO-PCI were selected for review...
January 16, 2018: Current Vascular Pharmacology
Qiaomei Jin, Juanzhi Zhao, Meng Gao, Yuanbo Feng, Wei Liu, Zhiqi Yin, Tiannv Li, Shaoli Song, Yicheng Ni, Jian Zhang, Dejian Huang, Dongjian Zhang
PURPOSE: Rapid noninvasive delineation of necrotic myocardium in ischemic regions is very critical for risk stratification and clinical decision-making but still challenging. This study aimed to evaluate the necrosis avidity of radioiodinated hypocrellins and its potential for rapidly imaging necrotic myocardium. PROCEDURES: The aggregation constants of four natural hypocrellins were analyzed by UV/vis spectroscopy. Then, they were radiolabeled with iodine-131 by iodogen oxidation method...
January 5, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
I Skrypnyk, G Maslova, T Lymanets, I Gusachenko
AIM: To evaluate the effectiveness of L-arginine in the prevention of endothelial dysfunction, which may be a predictor of anthracycline-induced myocardial injury, in patients with acute leukemia (AL) on the background of anthracycline antibiotics low cumulative doses from 100 to 200 mg/m2. MATERIALS AND METHODS: A total of 81 adult AL patients (38 males and 43 females with the age of 16-59 years) were studied. The patients were divided into two groups: group I (n = 34), AL patients treated with chemotherapy (CT) and L-arginine hydrochloride; group II (n = 47) - AL patients treated with CT only...
December 2017: Experimental Oncology
Franz Theuring, Boris Neumann, Christian Scheler, Peter R Jungblut, Karima Schwab
We investigated sex differences in cardiac protein patterns of intact and castrated mice using proteomics and 1D and 2D immunoblotting. To exclude differences concerning developmental aspects gonadectomy was conducted in mature mice at the age of three months. The main sex-related regulation in the protein pattern of the myocardium occurred for proteins involved in metabolic processes whereas only few proteins involved in other pathways underwent a regulation. Many regulated proteins (2/3) displayed a characteristic V form, which means that these proteins are up- or down-regulated in sexually mature compared to young mice and are back-regulated after castration, emphasizing a direct regulation by gonadal hormones...
December 19, 2017: Journal of Proteomics
S P Salikova, Y V Liskova, A A Stadnikov, S A Selivanov, N B Tverdokhlib, V O Rozhkov, G M Avchenko, A Y Erkhov, A B Popov
OBJECTIVE: To assess the significance of melatonin, NT-proBNP and morphological markers of myocardial remodeling for predicting the risk of complications after coronary artery bypass grafting (CABG) in patients with ischemic heart disease and chronic heart failure (CHF). MATERIALS AND METHODS: We included in this study 83 patients who underwent CABG in the period from September 2013 to October 2014. All patients before CABG underwent standard laboratory and instrumental examination...
October 2017: Kardiologiia
Petras Stirbys
The Brugada syndrome (BrS) is associated with increased risk of ventricular arrhythmias and sudden cardiac death. It generates genetically mediated arrhythmias posing a true pathophysiological challenge. In search of the similarities between BrS and long QT syndrome some novel insights are suggested. In patients with BrS the duration of QT interval is usually normal. Some investigators have found prolonged QT interval in the syndrome's natural course or the duration of QT segment have been extended by provocative tests unmasking BrS...
April 2017: Journal of Atrial Fibrillation
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"