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https://www.readbyqxmd.com/read/28664557/effects-of-oxygen-therapy-on-wall-motion-score-index-in-patients-with-st-elevation-myocardial-infarction-the-randomized-soccer-trial
#1
Ardavan Khoshnood, Mahin Akbarzadeh, Anders Roijer, Carl Meurling, Marcus Carlsson, Pallonji Bhiladvala, Peter Höglund, David Sparv, Lizbet Todorova, Arash Mokhtari, David Erlinge, Ulf Ekelund
BACKGROUND: Although oxygen (O2 ) is routinely used in patients with acute myocardial infarction (AMI), it may have negative effects. In this substudy of the SOCCER trial, we aimed to evaluate the effects of O2 -treatment on myocardial function in patients with ST elevation myocardial infarction (STEMI). METHODS: Normoxic (≥94%) STEMI patients were randomized in the ambulance to either supplemental O2 or room air until the end of the percutaneous coronary intervention (PCI)...
August 2017: Echocardiography
https://www.readbyqxmd.com/read/28662008/-evaluation-of-oxidative-reduction-markers-of-blood-in-patients-with-acute-coronary-syndromes-acs-subjected-to-cardiac-rehabilitation
#2
Anna Mejer-Barczewska, Joanna Kapusta, Małgorzata Godala, Edward Kowalczyk, Robert Irzmański, Jan Kowalski
Role in the pathogenesis of atherosclerosis play a reactive oxygen species. In the case of disturbance of dynamic balance between their production and antioxidant defense mechanisms comes to undesirable consequences - oxidative stress. Excessive exercise can, among others, disrupting the balance. AIM: The aim of the study was to evaluate the exponents of the processes of oxidation - reduction of blood in patients with ACS undergoing rehabilitation in a hospital setting. MATERIALS AND METHODS: The study included 25 patients after ACS STEMI, including 19 men and 6 women, aged 51...
June 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28642043/mitochondrial-cx43-an-important-component-of-cardiac-preconditioning
#3
REVIEW
Antonio Rodríguez-Sinovas, Marisol Ruiz-Meana, Amanda Denuc, David García-Dorado
Connexin 43 (Cx43) forms gap junction channels that are essential for the propagation of electrical depolarization in cardiomyocytes, but also with important roles in the pathophysiology of reperfusion injury. However, more recent studies have shown that Cx43 has also important functions independent from intercellular communication between adjacent cardiomyocytes. Some of these actions have been related to the presence of Cx43 in the mitochondria of these cells (mitoCx43). The functions of mitoCx43 have not been completely elucidated, but there is strong evidence indicating that mitoCx43 modulates mitochondrial respiration at respiratory complex I, production of radical oxygen species and ATP synthesis...
June 20, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28634219/early-use-of-n-acetylcysteine-nac-with-nitrate-therapy-in-patients-undergoing-primary-percutaneous-coronary-intervention-for-st-segment-elevation-myocardial-infarction-reduces-myocardial-infarct-size-the-naciam-trial
#4
Sivabaskari Pasupathy, Rosanna Tavella, Suchi Grover, Betty Raman, Nathan E K Procter, Yang T Du, Gnanadevan Mahadavan, Irene Stafford, Tamila Heresztyn, Andrew Holmes, Christopher Zeitz, Margaret Arstall, Joseph B Selvanayagam, John D Horowitz, John F Beltrame
Background -Contemporary ST-elevation myocardial infarction (STEMI) management involves primary percutaneous coronary intervention (PCI) with on-going studies focusing on infarct size reduction utilizing ancillary therapies. N-acetylcysteine (NAC) is an antioxidant with reactive oxygen species scavenging properties that also potentiates the effects of nitroglycerin (NTG) and thus represents a potentially beneficial ancillary therapy in primary PCI. The NACIAM (NACIn Acute Myocardial infarction) trial examined the effects of NAC on infarct size in STEMI patients undergoing PCI...
June 20, 2017: Circulation
https://www.readbyqxmd.com/read/28616565/lactated-ringer-s-solution-for-preventing-myocardial-reperfusion-injury
#5
Takashi Koyama
Reperfusion of ischemic myocardium is crucial for salvaging myocardial cells from ischemic cell death. However, reperfusion itself induces various deleterious effects on the ischemic myocardium. These effects, known collectively as reperfusion injury, comprise stunned myocardium, reperfusion-induced arrhythmia, microvascular reperfusion injury, and lethal reperfusion injury. No approach has proven successful in preventing any of these injuries in the clinical setting. My colleagues and I recently proposed a new postconditioning protocol, postconditioning with lactate-enriched blood (PCLeB), for the prevention of reperfusion injury...
June 2017: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28532425/combined-pulmonary-and-left-ventricular-support-with-veno-pulmonary-ecmo-and-impella-5-0-for-cardiogenic-shock-after-coronary-surgery
#6
Sameh Sayed, Christoph Schimmer, Ina Shade, Rainer Leyh, Ivan Aleksic
BACKGROUND: Mechanical circulatory support is a common practice nowadays in the management of patients after cardiogenic shock due to myocardial infarction. The single or combined use of one or more devices for mechanical support depends not only on the advantage or disadvantage of these devices but also on the timing of use of these devices before the development of multi organ failure. In our case we used more than one tool for mechanical circulatory support during the prolonged and complicated course of our patient with postcardiotomy cardiogenic shock after coronary artery bypass surgery...
May 22, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28321000/the-effects-of-hydrogen-gas-inhalation-on-adverse-left-ventricular-remodeling-after-percutaneous-coronary-intervention-for-st-elevated-myocardial-infarction%C3%A3-first-pilot-study-in-humans
#7
Yoshinori Katsumata, Fumiya Sano, Takayuki Abe, Tomoyoshi Tamura, Taishi Fujisawa, Yasuyuki Shiraishi, Shun Kohsaka, Ikuko Ueda, Koichiro Homma, Masaru Suzuki, Shigeo Okuda, Yuichiro Maekawa, Eiji Kobayashi, Shingo Hori, Junichi Sasaki, Keiichi Fukuda, Motoaki Sano
BACKGROUND: Hydrogen gas inhalation (HI) reduced infarct size and mitigated adverse left ventricular (LV) remodeling in a rat model of acute myocardial infarction (AMI). We designed a prospective, open-label, rater-blinded clinical pilot study in patients experiencing ST-elevated MI (STEMI).Methods and Results:The 20 patients with an initial diagnosis of STEMI were assigned to either an HI group (1.3% H2with 26% oxygen) or a control group (26% oxygen). There were no HI-related severe adverse events...
March 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28291665/cardiac-arrest-in-acute-myocardial-infarction-concept-of-circulatory-support-with-mechanical-chest-compression-and-impella-to-facilitate-percutaneous-coronary-intervention
#8
Kaleab N Asrress, Maciej Marciniak, Natalia Briceno, Divaka Perera
Cardiogenic shock in the context of acute ST-elevation myocardial infarction (STEMI) remains a challenge to manage and results in significant mortality and morbidity, cardiac arrest in this setting even more so. The increase in myocardial oxygen demand and consumption with the use of inotropes is recognised as increasing mortality. Alternatives include the intra-aortic balloon pump (IABP), which has yet to be shown to improve outcomes, and extracorporeal membrane oxygenation (ECMO), which requires super-specialised techniques not widely available...
February 28, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/27991651/oxygen-therapy-for-acute-myocardial-infarction
#9
REVIEW
Juan B Cabello, Amanda Burls, José I Emparanza, Susan E Bayliss, Tom Quinn
BACKGROUND: Oxygen (O2) is widely used in people with acute myocardial infarction (AMI). Previous systematic reviews concluded that there was insufficient evidence to know whether oxygen reduced, increased or had no effect on heart ischaemia or infarct size. Our first Cochrane review in 2010 also concluded there was insufficient evidence to know whether oxygen should be used. Since 2010, the lack of evidence to support this widely used intervention has attracted considerable attention, prompting further trials of oxygen therapy in myocardial infarction patients...
December 19, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27942729/why-oxygen-is-not-necessary-for-all-stemis
#10
Nick Fitterman
No abstract text is available yet for this article.
February 1, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/27893526/effect-of-oxygen-therapy-on-myocardial-salvage-in-st-elevation-myocardial-infarction-the-randomized-soccer-trial
#11
Ardavan Khoshnood, Marcus Carlsson, Mahin Akbarzadeh, Pallonji Bhiladvala, Anders Roijer, David Nordlund, Peter Höglund, David Zughaft, Lizbet Todorova, Arash Mokhtari, Håkan Arheden, David Erlinge, Ulf Ekelund
OBJECTIVE: Recent studies suggest that administration of O2 in patients with acute myocardial infarction may have negative effects. With the use of cardiac MRI (CMR), we evaluated the effects of supplemental O2 in patients with ST elevation myocardial infarction (STEMI) accepted for acute percutaneous coronary intervention (PCI). MATERIALS AND METHODS: This study was a randomized-controlled trial conducted at two university hospitals in Sweden. Normoxic STEMI patients were randomized in the ambulance to either supplemental O2 (10 l/min) or room air until the conclusion of the PCI...
November 23, 2016: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/27601212/associations-with-30-day-survival-following-extracorporeal-membrane-oxygenation-in-patients-with-acute-st-segment-elevation-myocardial-infarction-and-profound-cardiogenic-shock
#12
Wei-Chieh Lee, Chih-Yuan Fang, Huang-Chung Chen, Chien-Jen Chen, Cheng-Hsu Yang, Chi-Ling Hang, Hon-Kan Yip, Hsiu-Yu Fang, Chiung-Jen Wu
BACKGROUND: Limited data are available regarding the role of percutaneous cardiopulmonary support for the treatment of ST segment elevation myocardial infarction (STEMI) with profound cardiogenic shock (CS). The aim of this study is to identify the determinant factors for survival of patients with STEMI who underwent extracorporeal membrane oxygenation (ECMO) support. METHOD: From January 2005 to December 2013, 192 patients experienced STEMI with CS needed intra-aortic balloon pumping and support with vasoactive agents at our hospital...
November 2016: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/27544596/short-term-and-long-term-prognostic-outcomes-of-patients-with-st-segment-elevation-myocardial-infarction-complicated-by-profound-cardiogenic-shock-undergoing-early-extracorporeal-membrane-oxygenator-assisted-primary-percutaneous-coronary-intervention
#13
Sheng-Ying Chung, Meng-Shen Tong, Jiunn-Jye Sheu, Fan-Yen Lee, Pei-Hsun Sung, Chien-Jen Chen, Cheng-Hsu Yang, Chiung-Jen Wu, Hon-Kan Yip
BACKGROUND: This study investigated the 30-day and long-term prognostic outcomes in patients with ST-segment elevation myocardial infarction (STEMI) complicated with profound cardiogenic shock (CS) undergoing early routine extracorporeal membrane oxygenator (ECMO)-assisted primary percutaneous coronary intervention (PCI). METHODS: Between December 2005 and December 2014, 65 consecutive STEMI patients with profound CS underwent routine ECMO-supported primary PCI...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27349027/oxidative-profile-of-patients-with-st-segment-elevation-myocardial-infarction
#14
Marinês Calegari Lavall, Gabriela Bonfanti, Ronize Bordignon Ceolin, Karen Lilian Schott, Thissiane de Lima Gonçalves, Rafael Noal Moresco, Natália Brucker, Vera Maria Morsch, Margarete Dulce Bagatini, Maria Rosa Chitolina Schetinger
BACKGROUND: Patients with ST-segment elevation (STEMI) have totally occluded vessels, while patients with non-ST-segment elevation (NSTEMI) present partial vessel occlusion, which may generate different levels of Reactive Oxygen Species (ROS). Objectives: The aim of this study was to compare the oxidative profile in AMI patients with ST segment elevation and non-STEMI as well as control subjects. METHODS: This study was carried with 46 AMI patients divided into STEMI and NSTEMI...
2016: Clinical Laboratory
https://www.readbyqxmd.com/read/27279127/percutaneous-coronary-intervention-under-temporary-peripheral-veno-arterial-extracorporeal-membrane-oxygenation
#15
Jawad Chaara, Mustafa Cikirikcioglu, Marco Roffi
We describe the case of a 68-year old female presenting with subacute ST-elevation myocardial infarction and severe depressed left ventricular ejection fraction (15%) in the presence of severe three-vessel coronary artery disease. The patient was haemodynamically stable. After heart team discussion, a percutaneous coronary intervention was performed under peripheral veno-arterial extracorporeal membrane oxygenation without complications.
June 8, 2016: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/27200148/the-role-of-mitochondrial-reactive-oxygen-species-in-cardiovascular-injury-and-protective-strategies
#16
REVIEW
Danina M Muntean, Adrian Sturza, Maria D Dănilă, Claudia Borza, Oana M Duicu, Cristian Mornoș
Ischaemia/reperfusion (I/R) injury of the heart represents a major health burden mainly associated with acute coronary syndromes. While timely coronary reperfusion has become the established routine therapy in patients with ST-elevation myocardial infarction, the restoration of blood flow into the previously ischaemic area is always accompanied by myocardial injury. The central mechanism involved in this phenomenon is represented by the excessive generation of reactive oxygen species (ROS). Besides their harmful role when highly generated during early reperfusion, minimal ROS formation during ischaemia and/or at reperfusion is critical for the redox signaling of cardioprotection...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27000015/carbon-monoxide-and-st-elevation-myocardial-infarction-case-reports
#17
REVIEW
Douglas G Sward, Kinjal N Sethuraman, Jennifer S Wong, Robert E Rosenthal
We describe two cases of myocardial infarction with ST-segment elevation on electrocardiogram associated with carbon monoxide (CO) poisoning, a condition rarely reported in the literature. The first was a 62-year-old woman who experienced chest pain in the emergency department (ED) while being assessed for exposure to carbon monoxide in her home. The second was an 80-year-old man who fainted at home and was found to have ST elevation during the ED workup. After hospitalization, he returned home and soon thereafter had difficulty walking and speaking...
January 2016: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/26946705/-emergency-medicine-updates-2015
#18
Fernando Gonzalez, Christophe Marti, Maria Chrysafi, Nicolas Beysard, Olivier Grosgurin, Pierre-Nicolas Carron, Olivier Rutschmann
The year 2015 was marked by several publications questioning the practice of emergency medicine. The systematic administration of oxygen in STEMI patients offers no benefit. Similarly, medical expulsive therapy in patients with ureteric stones was questioned. Administration of steroids for acute radiculopathy showed only short-term, but no mid-term pain improvement. Several studies have demonstrated the benefit combining intraarterial and intravenous thrombolytic therapy for ischemic stroke. However, studies assessing optimal management strategy for patients hospitalized with community acquired pneumonia, showed conflicting results...
January 13, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/26759642/chest-pain-of-suspected-cardiac-origin-current-evidence-based-recommendations-for-prehospital-care
#19
REVIEW
P Brian Savino, Karl A Sporer, Joe A Barger, John F Brown, Gregory H Gilbert, Kristi L Koenig, Eric M Rudnick, Angelo A Salvucci
INTRODUCTION: In the United States, emergency medical services (EMS) protocols vary widely across jurisdictions. We sought to develop evidence-based recommendations for the prehospital evaluation and treatment of chest pain of suspected cardiac origin and to compare these recommendations against the current protocols used by the 33 EMS agencies in the state of California. METHODS: We performed a literature review of the current evidence in the prehospital treatment of chest pain and augmented this review with guidelines from various national and international societies to create our evidence-based recommendations...
December 2015: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/26740484/effect-of-supplemental-oxygen-exposure-on-myocardial-injury-in-st-elevation-myocardial-infarction
#20
RANDOMIZED CONTROLLED TRIAL
Ziad Nehme, Dion Stub, Stephen Bernard, Michael Stephenson, Janet E Bray, Peter Cameron, Ian T Meredith, Bill Barger, Andris H Ellims, Andrew J Taylor, David M Kaye, Karen Smith
OBJECTIVE: Supplemental oxygen therapy may increase myocardial injury following ST-elevation myocardial infarction (STEMI). In this study, we aimed to evaluate the effect of the dose and duration of oxygen exposure on myocardial injury after STEMI. METHODS: Descriptive analysis of data from a multicentre, prospective, randomised, controlled trial of 441 patients with STEMI randomised to supplemental oxygen therapy or room air breathing. The primary endpoint was myocardial infarct size as assessed by cardiac biomarkers, troponin (cTnI) and creatine kinase (CK)...
March 2016: Heart: Official Journal of the British Cardiac Society
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