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Dive into the research topics where Gabriel Gregoratos is active.

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Featured researches published by Gabriel Gregoratos.


Circulation | 2000

ACC/AHA Guidelines for the Management of Patients With Unstable Angina and Non–ST-Segment Elevation Myocardial Infarction: Executive Summary and Recommendations A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee on the Management of Patients With Unstable Angina)

Eugene Braunwald; Elliott M. Antman; John W. Beasley; Robert M. Califf; Melvin D. Cheitlin; Judith S. Hochman; Roger Jones; Joel Kupersmith; Thomas N. Levin; Carl J. Pepine; Earl E. Smith; David E. Steward; Pierre Theroux; Raymond J. Gibbons; Joseph S. Alpert; David P. Faxon; Valentin Fuster; Gabriel Gregoratos; Loren F. Hiratzka; Alice K. Jacobs; Sidney C. Smith

The American College of Cardiology (ACC)/American Heart Association (AHA) Task Force on Practice Guidelines was formed to make recommendations regarding the diagnosis and treatment of patients with known or suspected cardiovascular disease. Coronary artery disease (CAD) is the leading cause of death in the United States. Unstable angina (UA) and the closely related condition non–ST-segment elevation myocardial infarction (NSTEMI) are very common manifestations of this disease. These life-threatening disorders are a major cause of emergency medical care and hospitalizations in the United States. In 1996, the National Center for Health Statistics reported 1 433 000 hospitalizations for UA or NSTEMI. In recognition of the importance of the management of this common entity and of the rapid advances in the management of this condition, the need to revise guidelines published by the Agency for Health Care Policy and Research (AHCPR) and the National Heart, Lung and Blood Institute in 1994 was evident. This Task Force therefore formed the current committee to develop guidelines for the management of UA and NSTEMI. The present guidelines supersede the 1994 guidelines. The customary ACC/AHA classifications I, II, and III summarize both the evidence and expert opinion and provide final recommendations for both patient evaluation and therapy: Class I: Conditions for which there is evidence and/or general agreement that a given procedure or treatment is useful and effective . Class II: Conditions for which there is conflicting evidence and/or a divergence of opinion about the usefulness/efficacy of a procedure or treatment. Class IIa: Weight of evidence/opinion is in favor of usefulness/efficacy. Class IIb: Usefulness/efficacy is less well established by evidence/opinion. Class III: Conditions for which there is evidence and/or general agreement that the procedure/treatment is not useful/effective and in some cases may be harmful. The weight of the evidence was ranked highest (A) if the data …


Circulation | 2002

ACC/AHA 2002 Guideline Update for Exercise Testing: Summary Article: A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1997 Exercise Testing Guidelines)

Raymond J. Gibbons; Gary J. Balady; J. Timothy Bricker; Bernard R. Chaitman; Gerald F. Fletcher; Victor F. Froelicher; Daniel B. Mark; Ben D. McCallister; Aryan N. Mooss; Michael O'Reilly; William L. Winters; Elliott M. Antman; Joseph S. Alpert; David P. Faxon; Valentin Fuster; Gabriel Gregoratos; Loren F. Hiratzka; Alice K. Jacobs; Richard O. Russell; Sidney C. Smith

The American College of Cardiology (ACC)/American Heart Association (AHA) Task Force on Practice Guidelines regularly reviews existing guidelines to determine when an update or full revision is needed. This process gives priority to areas where major changes in text, and particularly recommendations, are mentioned on the basis of new understanding or evidence. Minor changes in verbiage and references are discouraged. The ACC/AHA guidelines for exercise testing that were published in 1997 have now been updated. The full-text guidelines incorporating the updated material are available on the Internet (www.acc.org or www.americanheart.org) in both a version that shows the changes in the 1997 guidelines in strike-over (deleted text) and highlighting (new text) and a “clean” version that fully incorporates the changes. This article describes the 10 major areas of change reflected in the update in a format that we hope can be read and understood as a stand-alone document. The table of contents from the full-length guideline (see next page) indicates the location of these changes. Interested readers are referred to the full-length Internet version to completely understand the context of these changes. All new references appear in boldface type; all original references appear in normal type.⇓ View this table: Table of Contents The ACC/AHA classifications, I, II, and III are used to summarize indications as follows: Class I: Conditions for which there is evidence and/or general agreement that a given procedure or treatment is useful and effective. Class II: Conditions for which there is conflicting evidence and/or a divergence of opinion about the usefulness/efficacy of a procedure or treatment. IIa: Weight of evidence/opinion is in favor of usefulness/efficacy. IIb: Usefulness/efficacy is less well established by evidence/opinion. Class III: Conditions for which there is evidence and/or general agreement that the procedure/treatment is not useful/effective and in some cases may be harmful. In the original …


Journal of the American College of Cardiology | 2008

ACC/AHA/HRS 2008 Guidelines for Device-Based Therapy of Cardiac Rhythm Abnormalities: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the ACC/AHA/NASPE 2002 Guideline Update for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices) developed in collaboration with the American Association for Thoracic Surgery and Society of Thoracic Surgeons.

Andrew E. Epstein; John P. DiMarco; Kenneth A. Ellenbogen; N.A. Mark Estes; Roger A. Freedman; Leonard S. Gettes; A. Marc Gillinov; Gabriel Gregoratos; Stephen C. Hammill; David L. Hayes; Mark A. Hlatky; L. Kristin Newby; Richard L. Page; Mark H. Schoenfeld; Michael J. Silka; Lynne Warner Stevenson; Michael O. Sweeney

Sidney C. Smith, Jr, MD, FACC, FAHA, Chair Alice K. Jacobs, MD, FACC, FAHA, Vice-Chair Cynthia D. Adams, RN, PhD, FAHA[§][1] Jeffrey L. Anderson, MD, FACC, FAHA[§][1] Christopher E. Buller, MD, FACC Mark A. Creager, MD, FACC, FAHA Steven M. Ettinger, MD, FACC David P. Faxon, MD, FACC,


Journal of the American College of Cardiology | 2004

ACC/AHA 2004 guideline update for coronary artery bypass graft surgery: summary article. A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1999 Guidelines for Coronary Artery Bypass Graft Surgery).

Kim A. Eagle; Robert A. Guyton; Ravin Davidoff; Fred H. Edwards; Gordon A. Ewy; Timothy J. Gardner; James C. Hart; Howard C. Herrmann; L. David Hillis; Adolph M. Hutter; Bruce W. Lytle; Robert A. Marlow; William C. Nugent; Thomas A. Orszulak; Elliott M. Antman; Sidney C. Smith; Joseph S. Alpert; Jeffrey L. Anderson; David P. Faxon; Valentin Fuster; Raymond J. Gibbons; Gabriel Gregoratos; Jonathan L. Halperin; Loren F. Hiratzka; Sharon A. Hunt; Alice K. Jacobs; Joseph P. Ornato

The American College of Cardiology (ACC)/American Heart Association (AHA) Task Force on Practice Guidelines regularly reviews existing guidelines to determine when an update or full revision is needed. This process gives priority to areas where major changes in text, particularly recommendations, are mentioned on the basis of new understanding of evidence. Minor changes in verbiage and references are discouraged. The ACC/AHA Guidelines for Coronary Artery Bypass Graft Surgery published in 1999 have now been updated. The full-text guidelines incorporating the updated material are available on the Internet (www.acc.org or www.americanheart.org) in both a version that shows the changes from the 1999 guidelines in track changes mode, with strike-through indicating deleted text and underlining indicating new text, and a “clean” version that fully incorporates the changes. This article describes the major areas of change reflected in the update in a format that we hope can be read and understood as a stand-alone document. Please note we have changed the table of contents headings in the 1999 guidelines from roman numerals to unique identifying numbers. Interested readers are referred to the full-length Internet version to completely understand the context of these changes. Classification of Recommendations and Level of Evidence are expressed in the ACC/AHA format as follows: ### Classification of Recommendations ### Level of Evidence


Circulation | 2003

ACC/AHA 2002 Guideline Update for the Management of Patients With Chronic Stable Angina—Summary Article A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee on the Management of Patients With Chronic Stable Angina)

Raymond J. Gibbons; Jonathan Abrams; Kanu Chatterjee; Jennifer Daley; Prakash Deedwania; John S. Douglas; T. Bruce Ferguson; Stephan D. Fihn; Theodore D. Fraker; Julius M. Gardin; Robert A. O'Rourke; Richard C. Pasternak; Sankey V. Williams; Joseph S. Alpert; Elliott M. Antman; Loren F. Hiratzka; Valentin Fuster; David P. Faxon; Gabriel Gregoratos; Alice K. Jacobs; Sidney C. Smith

The Clinical Efficacy Assessment Subcommittee of the American College of Physicians–American Society of Internal Medicine acknowledges the scientific validity of this product as a background paper and as a review that captures the levels of evidence in the management of patients with chronic stable angina as of November 17, 2002. The American College of Cardiology (ACC)/American Heart Association (AHA) Task Force on Practice Guidelines regularly reviews existing guidelines to determine when an update or a full revision is needed. This process gives priority to areas in which major changes in text, and particularly recommendations, are merited on the basis of new understanding or evidence. Minor changes in verbiage and references are discouraged. The ACC/AHA/American College of Physicians–American Society of Internal Medicine (ACP-ASIM) Guidelines for the Management of Patients With Chronic Stable Angina, which were published in June 1999, have now been updated. The full-text guideline incorporating the updated material is available on the Internet (www.acc.org or www.americanheart.org) in both a track-changes version showing the changes in the 1999 guideline in strike-out (deleted text) and highlighting …


Circulation | 2002

ACC/AHA Guideline Update for Perioperative Cardiovascular Evaluation for Noncardiac Surgery—Executive Summary A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1996 Guidelines on Perioperative Cardiovascular Evaluation for Noncardiac Surgery)

Kim A. Eagle; Peter B. Berger; Hugh Calkins; Bernard R. Chaitman; Gordon A. Ewy; Kirsten E. Fleischmann; Lee A. Fleisher; James B. Froehlich; Richard J. Gusberg; Jeffrey A. Leppo; Thomas J. Ryan; Robert C. Schlant; William L. Winters; Raymond J. Gibbons; Elliott M. Antman; Joseph S. Alpert; David P. Faxon; Valentin Fuster; Gabriel Gregoratos; Alice K. Jacobs; Loren F. Hiratzka; Richard O. Russell; Sidney C. Smith

These guidelines represent an update of those published in 1996 and are intended for physicians who are involved in the preoperative, operative, and postoperative care of patients undergoing noncardiac surgery. They provide a framework for considering cardiac risk of noncardiac surgery in a variety of patient and surgical situations. The overriding theme of these guidelines is that preoperative intervention is rarely necessary simply to lower the risk of surgery unless such intervention is indicated irrespective of the preoperative context. The purpose of preoperative evaluation is not simply to give medical clearance but rather to perform an evaluation of the patient’s current medical status; make recommendations concerning the evaluation, management, and risk of cardiac problems over the entire perioperative period; and provide a clinical risk profile that the patient, primary physician, anesthesiologist, and surgeon can use in making treatment decisions that may influence short- and long-term cardiac outcomes. The goal of the consultation is to identify the most appropriate testing and treatment strategies to optimize care of the patient, provide assessment of both short- and long-term cardiac risk, and avoid unnecessary testing in this era of cost containment. ### A. Development of Guidelines These guidelines are based on an update of a Medline, EMBASE, Cochrane library, and Best Evidence search of the English literature from 1995 through 2000, a review of selected journals, and the expert opinions of 12 committee members representing various disciplines of cardiovascular care, including general cardiology, interventional cardiology, noninvasive testing, vascular medicine, vascular surgery, anesthesiology, and arrhythmia management. As a result of these searches, more than 400 relevant new articles were identified. In addition, draft guidelines were submitted for critical review and amendment to the executive officers representing the American College of Cardiology (ACC) and the American Heart Association (AHA). A large proportion of the data used to develop these guidelines are …


Journal of the American College of Cardiology | 2003

American College of Cardiology/European Society of Cardiology Clinical Expert Consensus Document on Hypertrophic Cardiomyopathy: a report of the American College of Cardiology Foundation Task Force on Clinical Expert Consensus Documents and the European Society of Cardiology Committee for Practice Guidelines

Barry J. Maron; William J. McKenna; Gordon K. Danielson; Lukas Kappenberger; Horst J. Kuhn; Christine E. Seidman; Pravin M. Shah; William H. Spencer; Paolo Spirito; Folkert J. ten Cate; E. Douglas Wigle; Robert A. Vogel; Jonathan Abrams; Eric R. Bates; Bruce R. Brodie; Peter G. Danias; Gabriel Gregoratos; Mark A. Hlatky; Judith S. Hochman; Sanjiv Kaul; Robert C. Lichtenberg; Jonathan R. Lindner; Robert A. O’Rourke; Gerald M. Pohost; Richard S. Schofield; Cynthia M. Tracy; William L. Winters; Werner Klein; Silvia G. Priori; Angeles Alonso-Garcia

A 29-year-old Dominican man with a history of intravenous heroin use and hepatitis C presented with a 5-day history of fever, dyspnoea, haemoptysis, pleuritic chest pain, abdominal pain, haematochezia and haematemesis. Initial physical examination was significant for scleral icterus, generalised abdominal tenderness to palpation, melaena and blood-tinged sputum. Blood cultures grew Fusobacterium species. CT scan of the chest revealed multiple bilateral cavitary features in lung fields. At the same time, a neck ultrasound performed demonstrated thrombophlebitis in the right internal jugular vein, confirming the diagnosis of ‘Lemierre’s syndrome’. Treatment was with antibiotics and supportive care for 6 weeks.


Journal of the American College of Cardiology | 2003

ACC/AHA/ASE 2003 guideline update for the clinical application of echocardiography: Summary article: A report of the American College of Cardiology/American Heart Association task force on practice guidelines (ACC/AHA/ASE committee to update the 1997 guidelines for the clinical application of echocardiography)

Melvin D. Cheitlin; William F. Armstrong; Gerard P. Aurigemma; George A. Beller; Fredrick Z. Bierman; Jack L. Davis; Pamela S. Douglas; David P. Faxon; Linda D. Gillam; Thomas R. Kimball; William G. Kussmaul; Alan S. Pearlman; John T. Philbrick; Harry Rakowski; Daniel M. Thys; Elliott M. Antman; Sidney C. Smith; Joseph S. Alpert; Gabriel Gregoratos; Jeffrey L. Anderson; Loren F. Hiratzka; Sharon A. Hunt; Valentin Fuster; Alice K. Jacobs; Raymond J. Gibbons; Richard O. Russell

The previous guideline for the use of echocardiography was published in March 1997. Since that time, there have been significant advances in the technology of echocardiography and growth in its clinical use and in the scientific evidence leading to recommendations for its proper use. Each section has been reviewed and updated in evidence tables, and where appropriate, changes have been made in recommendations. A new section on the use of intraoperative transesophageal echocardiography (TEE) is being added to update the guidelines published by the American Society of Anesthesiologists and the Society of Cardiovascular Anesthesiologists. There are extensive revisions, especially of the sections on ischemic heart disease; congestive heart failure, cardiomyopathy, and assessment of left ventricular (LV) function; and screening and echocardiography in the critically ill. There are new tables of evidence and extensive revisions in the ischemic heart disease evidence tables. Because of space limitations, only those sections and evidence tables with new recommendations will be printed in this summary article. Where there are minimal changes in a recommendation grouping, such as a change from Class IIa to Class I, only that change will be printed, not the entire set of recommendations. Advances for which the clinical applications are still being investigated, such as the use of myocardial contrast agents and three-dimensional echocardiography, will not be discussed. The original recommendations of the 1997 guideline are based on a Medline search of the English literature from 1990 to May 1995. The original search yielded more than 3000 references, which the committee reviewed. For this guideline update, literature searching was conducted in Medline, EMBASE, Best Evidence, and the Cochrane Library for English-language meta-analyses and systematic reviews from 1995 through September 2001. Further searching was conducted for new clinical trials on the following topics: echocardiography in adult congenital heart disease, echocardiography for evaluation …


Journal of the American College of Cardiology | 1996

1999 Update: ACC/AHA guidelines for the management of patients with acute myocardial infarction: A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee on Management of Acute Myocardial Infarction)

Thomas J. Ryan; Elliott M. Antman; Neil H. Brooks; Robert M. Califf; L. David Hillis; Loren F. Hiratzka; Elliot Rapaport; Barbara Riegel; Richard O. Russell; Earl E. Smith; W. Douglas Weaver; Raymond J. Gibbons; Joseph S. Alpert; Kim A. Eagle; Timothy J. Gardner; Arthur Garson; Gabriel Gregoratos; Sidney C. Smith

Executive Summary andListing of Recommendations These guidelines are intended for physicians, nurses, and allied healthcare personnel who care for patients with suspected or established acute myocardial infarction (MI). These guidelines have been officially endorsed by the American Society of Echocardiography, the American College of Emergency Physicians, and the American Association of Critical-Care Nurses. This executive summary and listing of recommendations appears in the November 1, 1996, issue of Circulation. The guidelines in their entirety, including the ACC/AHA Class I, II, and III recommendations, are published in the November 1996 issue of the Journal of the American College of Cardiology. Beginning with these guidelines, the full text of ACC/AHA guidelines will be published in one journal and the executive summary and listing of recommendations in the other . Reprints of both the full text and the executive summary with its listing of recommendations are available from both organizations. Each year 900 000 people in the United States experience acute MI. Of these, roughly 225 000 die, including 125 000 who die “in the field” before obtaining medical care. Most of these deaths are arrhythmic in etiology. Because early reperfusion treatment of patients with acute MI improves left ventricular (LV) systolic function and survival, every effort must be made to minimize prehospital delay. Indeed, efforts are ongoing to promote rapid identification and treatment of patients with acute MI, including (1) patient education about the symptoms of acute MI and appropriate actions to take and (2) prompt initial care of the patient by the community emergency medical system. In treating the patient with chest pain, emergency medical system personnel must act with a sense of urgency. When the patient with suspected acute MI reaches the emergency department (ED), evaluation and initial management should take place promptly, because the benefit of reperfusion therapy is greatest if therapy …


Circulation | 2002

ACC/AHA/NASPE 2002 Guideline Update for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices: Summary Article A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (ACC/AHA/NASPE Committee to Update the 1998 Pacemaker Guidelines)

Gabriel Gregoratos; Jonathan Abrams; Andrew E. Epstein; Roger A. Freedman; David L. Hayes; Mark A. Hlatky; Richard E. Kerber; Gerald V. Naccarelli; Mark H. Schoenfeld; Michael J. Silka; Stephen L. Winters; Raymond J. Gibbons; Elliott M. Antman; Joseph S. Alpert; Loren F. Hiratzka; David P. Faxon; Alice K. Jacobs; Valentin Fuster; Sidney C. Smith

The current update of the ACC/AHA/NASPE Guidelines for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices includes several significant changes in the recommendations and in the supporting narrative portion. In this summary, we list the updated recommendations along with the respective

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Sidney C. Smith

University of North Carolina at Chapel Hill

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Elliott M. Antman

Brigham and Women's Hospital

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David P. Faxon

Brigham and Women's Hospital

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Valentin Fuster

Icahn School of Medicine at Mount Sinai

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Michael J. Silka

University of Southern California

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