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Myocardial ischaemia

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https://www.readbyqxmd.com/read/29674360/retrospective-observational-study-of-emergency-department-syndromic-surveillance-data-during-air-pollution-episodes-across-london-and-paris-in-2014
#1
Helen E Hughes, Roger Morbey, Anne Fouillet, Céline Caserio-Schönemann, Alec Dobney, Thomas C Hughes, Gillian E Smith, Alex J Elliot
INTRODUCTION: Poor air quality (AQ) is a global public health issue and AQ events can span across countries. Using emergency department (ED) syndromic surveillance from England and France, we describe changes in human health indicators during periods of particularly poor AQ in London and Paris during 2014. METHODS: Using daily AQ data for 2014, we identified three periods of poor AQ affecting both London and Paris. Anonymised near real-time ED attendance syndromic surveillance data from EDs across England and France were used to monitor the health impact of poor AQ...
April 19, 2018: BMJ Open
https://www.readbyqxmd.com/read/29671939/synthetic-cpg-oligonucleotides-induce-a-genetic-profile-ameliorating-murine-myocardial-i-r-injury
#2
Tobias Hilbert, Paul Markowski, Stilla Frede, Olaf Boehm, Pascal Knuefermann, Georg Baumgarten, Andreas Hoeft, Sven Klaschik
We previously demonstrated that pre-conditioning with CpG oligonucleotide (ODN) 1668 induces quick up-regulation of gene expression 3 hours post-murine myocardial ischaemia/reperfusion (I/R) injury, terminating inflammatory processes that sustain I/R injury. Now, performing comprehensive microarray and biocomputational analyses, we sought to further enlighten the "black box" beyond these first 3 hours. C57BL/6 mice were pretreated with either CpG 1668 or with control ODN 1612, respectively. Sixteen hours later, myocardial ischaemia was induced for 1 hour in a closed-chest model, followed by reperfusion for 24 hours...
April 19, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29666943/the-gtn-patch-a-simple-and-effective-new-approach-to-cardioprotection
#3
Derek M Yellon, Zhenhe He, Rayomand Khambata, Amrita Ahluwalia, Sean M Davidson
There remains a significant un-met need to reduce the extent of myocardial injury caused by ischaemia and reperfusion injury in patients experiencing an ST-elevation MI. Although nitric oxide is central to many cardioprotective strategies currently undergoing investigation, cardioprotection from the delivery of nitrates/nitrites has been inconsistently observed. The route of administration appears to be a critical variable. The glyceryl trinitrate (GTN) patch is commonly used as a simple and practical means of delivering nitric oxide to patients with ischaemic heart disease, but whether acute cardioprotection can be achieved by application of a GTN patch has not been investigated before...
April 17, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29664117/perioperative-hyperoxia-and-post-operative-cardiac-complications-in-adults-undergoing-non-cardiac-surgery-systematic-review-protocol
#4
REVIEW
C Petersen, J Wetterslev, C S Meyhoff
BACKGROUND: Oxygen therapy is used liberally for all patients undergoing anaesthesia. Recent studies have raised concerns that it may not be without complications when arterial oxygen concentrations reach supranormal concentrations (hyperoxia). Studies of oxygen therapy have raised concerns that the risk of myocardial injury and infarction is elevated in patients with hyperoxia due to vasoconstriction and formation of reactive oxygen species. Due to lack of symptoms or silent ischaemia, post-operative myocardial injury may be missed clinically...
April 17, 2018: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29663176/serum-magnesium-and-risk-of-incident-heart-failure-in-older-men-the-british-regional-heart-study
#5
Sasiwarang Goya Wannamethee, Olia Papacosta, Lucy Lennon, Peter H Whincup
To examine the association between serum magnesium and incident heart failure (HF) in older men and investigate potential pathways including cardiac function, inflammation and lung function. Prospective study of 3523 men aged 60-79 years with no prevalent HF or myocardial infarction followed up for a mean period of 15 years, during which 268 incident HF cases were ascertained. Serum magnesium was inversely associated with many CVD risk factors including prevalent atrial fibrillation, lung function (FEV1 ) and markers of inflammation (IL-6), endothelial dysfunction (vWF) and cardiac dysfunction [NT-proBNP and cardiac troponin T (cTnT)]...
April 17, 2018: European Journal of Epidemiology
https://www.readbyqxmd.com/read/29656359/myocardial-infarct-size-reduction-provided-by-local-and-remote-ischaemic-preconditioning-references-values-from-the-hatter-cardiovascular-institute
#6
Xavier Rossello, Zhenhe He, Derek M Yellon
PURPOSE: To accurately estimate the effect size of both local or classic ischaemic preconditioning (IPC) and remote ischaemic preconditioning (RIPC) using a pooling data set of 91 animals. METHODS: We combined all the available mouse data collected from our Institute over the last 3 years regarding (i) local IPC (4 cycles of 5 min of global ischaemia/reperfusion injury, IRI, followed by 35-min ischaemia and 2-h reperfusion) in the Langendorff-isolated perfused mouse heart model and (ii) RIPC (3 cycles of 5 min of limb occlusion followed by 40-min ischaemia and 2-h reperfusion) in the in vivo mouse model...
April 14, 2018: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29643156/indecho-study-cohort-study-investigating-birth-size-childhood-growth-and-young-adult-cardiovascular-risk-factors-as-predictors-of-midlife-myocardial-structure-and-function-in-south-asians
#7
Senthil K Vasan, Ambuj Roy, Viji Thomson Samuel, Belavendra Antonisamy, Santosh K Bhargava, Anoop George Alex, Bhaskar Singh, Clive Osmond, Finney S Geethanjali, Fredrik Karpe, Harshpal Sachdev, Kanhaiya Agrawal, Lakshmy Ramakrishnan, Nikhil Tandon, Nihal Thomas, Prasanna S Premkumar, Prrathepa Asaithambi, Sneha F X Princy, Sikha Sinha, Thomas Vizhalil Paul, Dorairaj Prabhakaran, Caroline H D Fall
INTRODUCTION: South Asians have high rates of cardiovascular disease (CVD) and its risk factors (hypertension, diabetes, dyslipidaemia and central obesity). Left ventricular (LV) hypertrophy and dysfunction are features of these disorders and important predictors of CVD mortality. Lower birth and infant weight and greater childhood weight gain are associated with increased adult CVD mortality, but there are few data on their relationship to LV function. The IndEcho study will examine associations of birth size, growth during infancy, childhood and adolescence and CVD risk factors in young adulthood with midlife cardiac structure and function in South Asian Indians...
April 10, 2018: BMJ Open
https://www.readbyqxmd.com/read/29622520/coronary-microcirculation-in-acute-myocardial-ischaemia-from-non-invasive-to-invasive-absolute-flow-assessment
#8
REVIEW
Julien Adjedj, Fabien Picard, Guillaume Durand-Viel, Anne Sigal-Cinqualbre, Doumit Daou, Benoit Diebold, Olivier Varenne
Although substantial progress has been made in recent decades in reducing mortality and performing optimal revascularization in patients with myocardial infarction, ischaemic heart disease, including acute coronary syndrome, remains the leading cause of mortality worldwide. One of the remaining challenges is to better detect, prevent and treat extended myocardial damage despite angiographically optimal revascularization. Several indices are available in clinical practice to evaluate myocardial damage, infarct size and potential myocardial recovery...
April 2, 2018: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29621066/electrical-stimulation-based-renal-nerve-mapping-exacerbates-ventricular-arrhythmias-during-acute-myocardial-ischaemia
#9
Bing Huang, Xiaoya Zhou, Menglong Wang, Xuefei Li, Liping Zhou, Guannan Meng, Yuhong Wang, Zhuo Wang, Songyun Wang, Lilei Yu, Hong Jiang
OBJECTIVE: Blood pressure elevation in response to transient renal nerve stimulation (RNS) has been used to determine the ablation target and endpoint of renal denervation. This study aimed to evaluate the safety of transient RNS in canines with normal or ischaemic hearts. METHODS: In ten normal (Group 1) and six healed myocardial infarction (HMI) (Group 2) canines, a large-tip catheter was inserted into the left or right renal artery to perform transient RNS. The left stellate ganglion neural activity (LSGNA) and ventricular electrophysiological parameters were measured at baseline and during transient RNS...
April 4, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29611430/diagnostic-accuracy-of-the-electrocardiographic-decision-support-myocardial-ischaemia-eds-mi-algorithm-in-detection-of-acute-coronary-occlusion
#10
Thomas Lindow, Olle Pahlm, Charles W Olson, Ardavan Khoshnood, Ulf Ekelund, Marcus Carlsson, Cees A Swenne, Sumche Man, Henrik Engblom
Electrocardiographic Decision Support - Myocardial Ischaemia (EDS-MI) is a graphical decision support for detection and localization of acute transmural ischaemia. A recent study indicated that EDS-MI performs well for detection of acute transmural ischaemia. However, its performance has not been tested in patients with non-ischaemic ST-deviation. We aimed to optimize the diagnostic accuracy of EDS-MI in patients with verified acute coronary occlusion as well as patients with non-ischaemic ST deviation and compare its performance with STEMI criteria...
April 1, 2018: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/29607187/the-present-and-future-role-of-ultrasound-targeted-microbubble-destruction-in-preclinical-studies-of-cardiac-gene-therapy
#11
REVIEW
Lijun Qian, Barsha Thapa, Jian Hong, Yanmei Zhang, Menglin Zhu, Ming Chu, Jing Yao, Di Xu
Multiple limitations for cardiac pharmacologic therapies like intolerance, individual variation in effectiveness, side effects, and high cost still remain, despite the recent progress in diagnosis and health support. Gene therapy is poised to be an attractive alternative in various ways for the future, refractory cardiac diseases being one aspect of it. As a novel therapy to deliver the objective gene to organs of living animals, ultrasound targeted microbubble destruction (UTMD) has therapeutic potential in cardiovascular disorders...
February 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29606367/t-max-is-a-sensitive-indicator-of-myocardial-ischaemia-under-adenosine-stress-as-determined-by-static-pet-imaging-a-study-in-a-porcine-model
#12
S Sui, Y Hou, Y Ma, Y Wang, M Yu, Y Yang, N Huang
AIM: To evaluate Tmax , defined as the time of residual function R(t) reaching its maximum, as an indicator of myocardial ischaemia and compare its efficacy with other computed tomography perfusion (CTP) parameters. MATERIALS AND METHODS: Eight Bama miniature pigs with 50-90% left anterior descending artery stenosis underwent adenosine stress myocardial CTP and13 NNH3 position-emission tomography (PET) perfusion imaging. Tmax , myocardial blood flow (MBF), myocardial blood volume (MBV), mean transit time (MTT), and time to peak (TTP) were calculated from CTP images...
March 29, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29602883/danegaptide-for-primary-percutaneous-coronary-intervention-in-acute-myocardial-infarction-patients-a-phase-2-randomised-clinical-trial
#13
Thomas Engstrøm, Lars Nepper-Christensen, Steffen Helqvist, Lene Kløvgaard, Lene Holmvang, Erik Jørgensen, Frants Pedersen, Kari Saunamaki, Hans-Henrik Tilsted, Adam Steensberg, Søren Fabricius, Ulrik Mouritzen, Niels Vejlstrup, Kiril A Ahtarovski, Christoffer Göransson, Litten Bertelsen, Kasper Kyhl, Göran Olivecrona, Henning Kelbæk, Jens Flensted Lassen, Lars Køber, Jacob Lønborg
OBJECTIVES: Reperfusion immediately after reopening of the infarct-related artery in ST-segment elevation myocardial infarction (STEMI) may cause myocardial damage in addition to the ischaemic insult (reperfusion injury). The gap junction modulating peptide danegaptide has in animal models reduced this injury. We evaluated the effect of danegaptide on myocardial salvage in patients with STEMI. METHODS: In addition to primary percutaneous coronary intervention in STEMI patients with thrombolysis in myocardial infarction flow 0-1, single vessel disease and ischaemia time less than 6 hours, we tested, in a clinical proof-of-concept study, the therapeutic potential of danegaptide at two-dose levels...
March 30, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29582211/the-caspase-1-inhibitor-vx-765-protects-the-isolated-rat-heart-via-the-risk-pathway
#14
Helison Do Carmo, Sapna Arjun, Orlando Petrucci, Derek M Yellon, Sean M Davidson
PURPOSE: Protecting the heart from ischaemia-reperfusion (IR) injury is a major goal in patients presenting with an acute myocardial infarction. Pyroptosis is a novel form of cell death in which caspase 1 is activated and cleaves interleukin 1β. VX-785 is a highly selective, prodrug caspase 1 inhibitor that is also clinically available. It has been shown to be protective against acute IR in vivo rat model, and therefore might be a promising possibility for future cardioprotective therapy...
March 26, 2018: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29580830/myocardial-injury-is-more-common-than-deep-venous-thrombosis-after-vascular-surgery-and-is-associated-with-a-high-one-year-mortality-risk
#15
Jacek Górka, Kamil Polok, Jakub Fronczek, Karolina Górka, Mateusz Kózka, Paweł Iwaszczuk, Marzena Frołow, P J Devereaux, Bruce Biccard, Jacek Musiał, Wojciech Szczeklik
OBJECTIVE/BACKGROUND: Venous thromboembolism (VTE) has been considered the dominant major life threatening vascular complication after non-cardiac surgery, but recent studies have shifted the emphasis toward myocardial injury after non-cardiac surgery (MINS) as a common adverse event in the peri-operative setting. The aim of the present study was to compare the incidence and influence on mortality of two dominant venous and arterial events in the peri-operative period by prospectively screening a consecutive cohort of patients undergoing vascular surgery...
March 23, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29570481/intraoperative-blood-pressure-levels-in-young-and-anaesthetised-children-are-we-getting-any-closer-to-the-truth
#16
Jurgen C de Graaff
PURPOSE OF REVIEW: Blood pressure is a basic feature of monitoring during anaesthesia. However, it is very unclear what blood pressures are normal during anaesthesia in children. Furthermore, the clinical consequences of low blood pressure are also uncertain. Similarly, it is unclear when to initiate therapy for hypotension during anaesthesia. This review summarizes the most recent development on the interpretation of blood pressure measurements in children and the relation of low blood pressure to clinical outcome...
March 22, 2018: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/29566413/rivaroxaban-a-new-treatment-paradigm-in-the-setting-of-vascular-protection
#17
Rupert Bauersachs, Faiez Zannad
The pathophysiology of atherosclerosis involves a diseased endothelium, lipid accumulation and low-grade inflammation. In later stages of coronary artery disease (CAD) and peripheral arterial disease (PAD), plaque rupture may induce atherothrombosis caused by fibrin formation and platelet activation, leading to vessel occlusion with subsequent organ damage such as myocardial infarction, stroke or limb ischaemia. Because of the high disease burden associated with CAD and PAD, there is a need for continuous vascular protection beyond currently available treatments including antiplatelet agents...
March 22, 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29559406/working-party-approved-by-the-french-society-of-anaesthesia-and-intensive-care-medicine-sfar-and-the-french-society-for-the-study-of-diabetes-sfd
#18
Gaëlle Cheisson, Sophie Jacqueminet, Emmanuel Cosson, Carole Ichai, Anne-Marie Leguerrier, Bogdan Nicolescu-Catargi, Alexandre Ouattara, Igor Tauveron, Paul Valensi, Dan Benhamou
In diabetic patients undergoing surgery, we recommend assessing glycaemic control preoperatively by assessing glycated haemoglobin (HbA1c) levels and recent capillary blood sugar (glucose) levels, and to adjust any treatments accordingly before surgery, paying particular attention to specific complications of diabetes. Gastroparesis creates a risk of stasis and aspiration of gastric content at induction of anaesthesia requiring the use of a rapid sequence induction technique. Cardiac involvement can be divided into several types...
March 17, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29554376/high-sensitivity-cardiac-troponin-i-is-a-biomarker-for-occult-coronary-plaque-burden-and-cardiovascular-events-in-patients-with-rheumatoid-arthritis
#19
George A Karpouzas, Joel Estis, Panteha Rezaeian, John Todd, Matthew J Budoff
Objectives: Patients with RA display greater occult coronary atherosclerosis burden and experience higher cardiovascular morbidity and mortality compared with controls. We here explored whether pro-inflammatory cytokines and high-sensitivity cardiac troponin I (hs-cTnI), a biomarker of myocardial injury, correlated with plaque burden and cardiovascular events (CVEs) in RA. Methods: We evaluated 150 patients with 64-slice coronary CT angiography. Coronary artery calcium, number of segments with plaque (segment involvement score), stenotic severity and plaque burden were assessed...
March 14, 2018: Rheumatology
https://www.readbyqxmd.com/read/29547976/argon-preconditioning-enhances-postischaemic-cardiac-functional-recovery-following-cardioplegic-arrest-and-global-cold-ischaemia
#20
Attila Kiss, Huaqing Shu, Ouafa Hamza, David Santer, Eva Verena Tretter, Shanglong Yao, Klaus Markstaller, Seth Hallström, Bruno K Podesser, Klaus Ulrich Klein
OBJECTIVES: Previous studies demonstrated that preconditioning with argon gas provided a marked reduction in inflammation and apoptosis and increased myocardial contractility in the setting of acute myocardial ischaemia-reperfusion (IR). There is substantial evidence that myocardial IR injury following cardioplegic arrest is associated with the enhancement of apoptosis and inflammation, which is considered to play a role in cardiac functional impairment. Therefore, the present study was designed to clarify whether preconditioning with argon gas enhances recovery of cardiac function following cardioplegic arrest...
March 13, 2018: European Journal of Cardio-thoracic Surgery
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