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Cardiología

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30 papers 0 to 25 followers EKG
https://www.readbyqxmd.com/read/25701296/managing-atrial-fibrillation
#1
REVIEW
Clare L Atzema, Tyler W Barrett
No abstract text is available yet for this article.
May 2015: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/26209466/novel-vagal-maneuver-technique-for-termination-of-supraventricular-tachycardias
#2
Haluk Un, Mehmet Dogan, Omer Uz, Zafer Isilak, Mehmet Uzun
Hemodynamically unstable patients with supraventricular tachycardias (SVTs) should be treated with electrical cardioversion. If the patient is stable, acute termination of tachycardia can be achieved by vagal maneuvers or medical therapy. The Valsalva maneuver, carotid massage, and ice to the face are the most common vagal maneuvers. In our experience with patients, we observed that vagal stimulation increases with lying backward. Our suggested maneuver is based on quickly lying backward, from a seated position...
January 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/26205599/the-early-repolarization-pattern-a-consensus-paper
#3
REVIEW
Peter W Macfarlane, Charles Antzelevitch, Michel Haissaguerre, Heikki V Huikuri, Mark Potse, Raphael Rosso, Frederic Sacher, Jani T Tikkanen, Hein Wellens, Gan-Xin Yan
The term early repolarization has been in use for more than 50 years. This electrocardiographic pattern was considered benign until 2008, when it was linked to sudden cardiac arrest due to idiopathic ventricular fibrillation. Much confusion over the definition of early repolarization followed. Thus, the objective of this paper was to prepare an agreed definition to facilitate future research in this area. The different definitions of the early repolarization pattern were reviewed to delineate the electrocardiographic measures to be used when defining this pattern...
July 28, 2015: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/26550795/trial-of-continuous-or-interrupted-chest-compressions-during-cpr
#4
RANDOMIZED CONTROLLED TRIAL
Graham Nichol, Brian Leroux, Henry Wang, Clifton W Callaway, George Sopko, Myron Weisfeldt, Ian Stiell, Laurie J Morrison, Tom P Aufderheide, Sheldon Cheskes, Jim Christenson, Peter Kudenchuk, Christian Vaillancourt, Thomas D Rea, Ahamed H Idris, Riccardo Colella, Marshal Isaacs, Ron Straight, Shannon Stephens, Joe Richardson, Joe Condle, Robert H Schmicker, Debra Egan, Susanne May, Joseph P Ornato
BACKGROUND: During cardiopulmonary resuscitation (CPR) in patients with out-of-hospital cardiac arrest, the interruption of manual chest compressions for rescue breathing reduces blood flow and possibly survival. We assessed whether outcomes after continuous compressions with positive-pressure ventilation differed from those after compressions that were interrupted for ventilations at a ratio of 30 compressions to two ventilations. METHODS: This cluster-randomized trial with crossover included 114 emergency medical service (EMS) agencies...
December 3, 2015: New England Journal of Medicine
https://www.readbyqxmd.com/read/21762234/electrocardiogram-findings-in-emergency-department-patients-with-syncope
#5
James Quinn, Daniel McDermott
OBJECTIVES: To determine the sensitivity and specificity of the San Francisco Syncope Rule (SFSR) electrocardiogram (ECG) criteria for determining cardiac outcomes and to define the specific ECG findings that are the most important in patients with syncope. METHODS: A consecutive cohort of emergency department (ED) patients with syncope or near syncope was considered. The treating emergency physicians assessed 50 predictor variables, including an ECG and rhythm assessment...
July 2011: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28145667/acute-coronary-syndrome-diagnostic-evaluation
#6
Craig Barstow, Matthew Rice, Jonathan D McDivitt
Myocardial infarction (MI), a subset of acute coronary syndrome, is damage to the cardiac muscle as evidenced by elevated cardiac troponin levels in the setting of acute ischemia. Coronary artery disease is the leading cause of mortality in the United States. Chest pain is a common presentation in patients with MI; however, there are multiple noncardiac causes of chest pain, and the diagnosis cannot always be made based on initial presentation. The assessment of a possible MI includes evaluation of risk factors and presenting signs and symptoms, rapid electrocardiography, and serum cardiac troponin measurements...
February 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28161883/chads2-cha2ds2-vasc-and-r2chads2-scores-predict-mortality-in-patients-with-coronary-artery-disease
#7
Fang-Yang Huang, Bao-Tao Huang, Xiao-Bo Pu, Yong Yang, Shi-Jian Chen, Tian-Li Xia, Yi-Yue Gui, Yong Peng, Rui-Shuang Liu, Yuanweixiang Ou, Fei Chen, Ye Zhu, Mao Chen
Few studies to date address the predictive ability of CHA2DS2-VASc and R2CHADS2 in CAD patients. Our aim is to investigate the prognostic performance of CHADS2, CHA2DS2-VASc and R2CHADS2 scores in patients with coronary artery disease (CAD). Angiographically obstructive CAD patients were enrolled. The prognostic performance of the three risk scores was evaluated using Cox hazards models. In addition, we compared their predictive values by calculating C statistics, net reclassification improvement (NRI) and integrated discrimination improvement (IDI)...
February 4, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28153111/mode-of-death-in-heart-failure-with-preserved-ejection-fraction
#8
REVIEW
Muthiah Vaduganathan, Ravi B Patel, Alexander Michel, Sanjiv J Shah, Michele Senni, Mihai Gheorghiade, Javed Butler
Little is known about specific modes of death in patients with heart failure with preserved ejection fraction (HFpEF). Herein, the authors critically appraise the current state of data and offer potential future directions. They conducted a systematic review of 1,608 published HFpEF papers from January 1, 1985, to December 31, 2015, which yielded 8 randomized clinical trials and 24 epidemiological studies with mode-of-death data. Noncardiovascular modes of death represent an important competing risk in HFpEF...
February 7, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27473406/posterior-reperfusion-t-waves-wellens-syndrome-of-the-posterior-wall
#9
Brian E Driver, Gautam R Shroff, Stephen W Smith
BACKGROUND: Reperfusion after coronary occlusion (myocardial infarction, MI), as in Wellens' syndrome, is often represented on ECG as T-wave inversion in the leads overlying the affected myocardial wall(s). As an extension of this logic, reperfusion of the posterior wall should manifest on right precordial leads (which are opposite the posterior wall) as enlarged T-waves. OBJECTIVE: We sought to determine whether T-wave amplitude (TWa) in leads V2 and V3 after reperfusion in posterior MI (PMI) is greater than in patients without PMI...
February 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/27512036/the-heart-in-sickle-cell-disease-a-model-for-heart-failure-with-preserved-ejection-fraction
#10
John C Wood
No abstract text is available yet for this article.
August 30, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28108220/missed-myocardial-infarctions-in-ed-patients-prospectively-categorized-as-low-risk-by-established-risk-scores
#11
A J Singer, M P Than, S Smith, P McCullough, T W Barrett, R Birkhahn, M Reed, H C Thode, W D Arnold, L B Daniels, C de Filippi, G Headden, W F Peacock
STUDY OBJECTIVES: Few studies have prospectively compared multiple cardiac risk prediction scores. We compared the rate of missed acute myocardial infarction (AMI) in chest pain patients prospectively categorized as low risk by unstructured clinical impression, and by HEART, TIMI, GRACE, and EDACS scores, in combination with two negative contemporary cardiac troponins (cTn) available in the U.S. METHODS: We enrolled 434 patients with chest pain presenting to one of seven emergency departments (ED)...
January 5, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28104075/challenges-in-infective-endocarditis
#12
REVIEW
Thomas J Cahill, Larry M Baddour, Gilbert Habib, Bruno Hoen, Erwan Salaun, Gosta B Pettersson, Hans Joachim Schäfers, Bernard D Prendergast
Infective endocarditis is defined by a focus of infection within the heart and is a feared disease across the field of cardiology. It is frequently acquired in the health care setting, and more than one-half of cases now occur in patients without known heart disease. Despite optimal care, mortality approaches 30% at 1 year. The challenges posed by infective endocarditis are significant. It is heterogeneous in etiology, clinical manifestations, and course. Staphylococcus aureus, which has become the predominant causative organism in the developed world, leads to an aggressive form of the disease, often in vulnerable or elderly patient populations...
January 24, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27956440/acute-coronary-syndromes
#13
Tushar Kotecha, Roby D Rakhit
In the UK, there are over 80,000 admissions annually with acute coronary syndromes (ACS). Management of ST-elevation myocardial infarction (STEMI) involves primary percutaneous coronary intervention (PCI), which is delivered via dedicated heart attack centres. Non-ST elevation-ACS (NSTE-ACS) accounts for two-thirds of ACS presentations, affecting an older cohort of patients - often with more complex comorbidities. Initial management is with anti-thrombotic therapy with a view to PCI within 24 hours for the most acute cases and within 72 hours for all others...
December 2016: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/27777258/diagnosis-and-management-of-supraventricular-tachycardias
#14
REVIEW
Lior Bibas, Michael Levi, Vidal Essebag
No abstract text is available yet for this article.
December 6, 2016: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/27856499/european-heart-rhythm-association-ehra-consensus-document-on-the-management-of-supraventricular-arrhythmias-endorsed-by-heart-rhythm-society-hrs-asia-pacific-heart-rhythm-society-aphrs-and-sociedad-latinoamericana-de-estimulaci%C3%A3-n-cardiaca-y-electrofisiologia
#15
Demosthenes G Katritsis, Giuseppe Boriani, Francisco G Cosio, Gerhard Hindricks, Pierre Jais, Mark E Josephson, Roberto Keegan, Young-Hoon Kim, Bradley P Knight, Karl-Heinz Kuck, Deirdre A Lane, Gregory Y H Lip, Helena Malmborg, Hakan Oral, Carlo Pappone, Sakis Themistoclakis, Kathryn A Wood, Carina Blomström-Lundqvist
No abstract text is available yet for this article.
17, 2016: European Heart Journal
https://www.readbyqxmd.com/read/27959663/heart-failure-with-preserved-ejection-fraction
#16
REVIEW
Margaret M Redfield
No abstract text is available yet for this article.
November 10, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/28030676/aortic-stenosis
#17
Faisal G Bakaeen, Todd K Rosengart, Blase A Carabello
This issue provides a clinical overview of aortic stenosis, focusing on screening, diagnosis, treatment, and practice improvement. The content of In the Clinic is drawn from the clinical information and education resources of the American College of Physicians (ACP), including MKSAP (Medical Knowledge and Self-Assessment Program). Annals of Internal Medicine editors develop In the Clinic in collaboration with the ACP's Medical Education and Publishing divisions and with the assistance of additional science writers and physician writers...
January 3, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28039338/thrombosis-and-platelets-an-update
#18
REVIEW
Milka Koupenova, Beate E Kehrel, Heather A Corkrey, Jane E Freedman
Haemostasis and thrombosis are complex, multifactorial processes. There is an evolving understanding of the mechanisms influencing vascular occlusion and the role of inflammation and immunity. Despite major advances in elucidating the mechanistic pathways mediating platelet function and thrombosis, challenges in the treatment of vascular occlusive diseases persist. Pharmacological advances have greatly affected thrombotic outcomes, but this has led to the unwanted side effect of bleeding. Detailed assessment of the impact of non-thrombotic diseases on haemostasis and thrombosis is necessary to better evaluate thrombotic risk and establish optimal treatment...
December 30, 2016: European Heart Journal
https://www.readbyqxmd.com/read/28107561/beta-blockers-for-hypertension
#19
REVIEW
Charles S Wiysonge, Hazel A Bradley, Jimmy Volmink, Bongani M Mayosi, Lionel H Opie
BACKGROUND: Beta-blockers refer to a mixed group of drugs with diverse pharmacodynamic and pharmacokinetic properties. They have shown long-term beneficial effects on mortality and cardiovascular disease (CVD) when used in people with heart failure or acute myocardial infarction. Beta-blockers were thought to have similar beneficial effects when used as first-line therapy for hypertension. However, the benefit of beta-blockers as first-line therapy for hypertension without compelling indications is controversial...
January 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28057253/hiv-and-ischemic-heart-disease
#20
REVIEW
Ahmed Vachiat, Keir McCutcheon, Nqoba Tsabedze, Don Zachariah, Pravin Manga
The association of coronary heart disease (CHD) and human immunodeficiency virus (HIV) infection has been well recognized for many years. The etiology of the increased prevalence of CHD in HIV-infected populations is the result of complex interactions among the viral infection, host factors, traditional risk factors, and therapies for HIV. As the HIV population is living longer, largely attributable to combination antiretroviral therapy, there is concern about the effect of the rising prevalence of CHD on morbidity and mortality, as well its effect on health systems around the world...
January 3, 2017: Journal of the American College of Cardiology
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