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Dalia T, Lahan S, Ranka S, Goyal A, Zoubek S, Gupta K, Shah Z. Warfarin versus direct oral anticoagulants for treating left ventricular thrombus: a systematic review and meta-analysis. Thromb J 2021; 19:7. [PMID: 33517885 PMCID: PMC7849079 DOI: 10.1186/s12959-021-00259-w] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/17/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Left ventricular thrombus (LVT) is not uncommon and pose a risk of systemic embolism, which can be mitigated by adequate anticoagulation. Direct oral anticoagulants (DOACs) are increasingly being used as alternatives to warfarin for anticoagulation, but their efficacy and safety profile has been debated. We aim to compare the therapeutic efficacy and safety of DOACs versus warfarin for the treatment of LVT. METHODOLOGY We systematically searched PubMed/Medline, Google Scholar, Cochrane library, and LILCAS databases from inception to 14th August 2020 to identify relevant studies comparing warfarin and DOACs for LVT treatment and used the pooled data extracted from retrieved studies to perform a meta-analysis. RESULTS We report pooled data on 1955 patients from 8 studies, with a mean age of 61 years and 59.7 years in warfarin and DOACs group, respectively. The pooled odds ratio for thrombus resolution was 1.11 (95% CI 0.51-2.39) on comparing warfarin to DOAC, but it did not reach a statistical significance (p = 0.76). The pooled risk ratio (RR) of stroke or systemic embolization and bleeding in patients treated with warfarin vs DOACs was 1.04 (95% CI 0.64-1.68; p = 0.85), and 1.15 (95% CI 0.62-2.13; p = 0.57), respectively; with an overall RR of 1.09 (95% CI 0.70-1.70; p = 0.48) for mortality. CONCLUSIONS DOACs appears to be non-inferior or at least as effective as warfarin in the treatment of left ventricular thrombus without any statistical difference in stroke or bleeding complications.
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Affiliation(s)
- Tarun Dalia
- Department of Cardiovascular Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Shubham Lahan
- University College of Medical Sciences, New Delhi, India
| | - Sagar Ranka
- Department of Cardiovascular Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Amandeep Goyal
- Department of Cardiovascular Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Sara Zoubek
- Department of Pharmacology, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Kamal Gupta
- Department of Cardiovascular Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Zubair Shah
- Department of Cardiovascular Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
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Xiang Q, Pang X, Liu Z, Yang G, Tao W, Pei Q, Cui Y. Progress in the development of antiplatelet agents: Focus on the targeted molecular pathway from bench to clinic. Pharmacol Ther 2019; 203:107393. [PMID: 31356909 DOI: 10.1016/j.pharmthera.2019.107393] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 07/10/2019] [Indexed: 12/22/2022]
Abstract
Antiplatelet drugs serve as a first-line antithrombotic therapy for the management of acute ischemic events and the prevention of secondary complications in vascular diseases. Numerous antiplatelet therapies have been developed; however, currently available agents are still associated with inadequate efficacy, risk of bleeding, and variability in individual response. Understanding the mechanisms of platelet involvement in thrombosis and the clinical development process of antiplatelet agents is critical for the discovery of novel agents. The functions of platelets in thrombosis are regulated by two major mechanisms: the interaction between surface receptors and their ligands, and the downstream intracellular signaling pathways. Recently, most of the progress made in antiplatelet drug development has been achieved with P2Y receptor antagonists. Additionally, the usage of GP IIb/IIIa receptor antagonists has decreased, because it is associated with a higher risk of bleeding and thrombocytopenia. Agents targeting other platelet surface receptors such as PARs, TP receptor, EP3 receptor, GPIb-IX-V receptor, P-selectin, as well as intracellular signaling factors, such as PI3Kβ, have been evaluated in an attempt to develop the next generation of antiplatelet drugs, reduce or eliminate interpatient variability of drug efficacy and significantly lower the risk of drug-induced bleeding. The aim of this review is to describe the pathways of platelet activation in thrombosis, and summarize the development process of antiplatelet agents, as well as the preclinical and clinical evaluations performed on these agents.
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Affiliation(s)
- Qian Xiang
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing 100034, China
| | - Xiaocong Pang
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing 100034, China
| | - Zhenming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Guoping Yang
- Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Research Center of Drug Clinical Evaluation of Central South University, 138 TongZiPo Road, Changsha, Hunan 410013, China
| | - Weikang Tao
- Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Research Center of Drug Clinical Evaluation of Central South University, 138 TongZiPo Road, Changsha, Hunan 410013, China
| | - Qi Pei
- Shanghai Hengrui Pharmaceuticals Co., 279 Wenjing Road, Shanghai, China
| | - Yimin Cui
- Department of Pharmacy, Peking University First Hospital, No. 6, Da Hong Luo Chang Street, Xicheng District, Beijing 100034, China.
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Management of Patients With NSTE-ACS. J Am Coll Cardiol 2016; 68:313-321. [DOI: 10.1016/j.jacc.2016.03.599] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/25/2016] [Accepted: 03/01/2016] [Indexed: 11/24/2022]
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Altman R, Scazziota A, Santoro S, Gonzalez C. Abciximab Does Not Inhibit the Increase of Thrombin Generation Produced in Platelet-Rich Plasma In Vitro by Sodium Arachidonate or Tissue Factor. Clin Appl Thromb Hemost 2016; 11:271-7. [PMID: 16015412 DOI: 10.1177/107602960501100305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Aspirin and platelet membrane glycoprotein (GP) IIb/IIIa blockers are currently used for acute coronary events, and in percutaneous coronary intervention for preventing further coronary outcomes, because they inhibit platelet function. Aspirin also inhibits thrombin generation (TG) in platelet-rich plasma (PRP) activated by sodium arachidonate (AA). The effect of the platelet membrane GP IIb-IIIa (integrin αIIbβ3) blocker abciximab on thrombin generation was studied in vitro using PRP. Thirty healthy volunteers taking no medication, and 28 volunteers who had taken aspirin (160 mg/day for 3-4 days), were included in the protocol. Control or in vivo aspirinated PRP, stimulated or not by AA or tissue factor (TF), was investigated for the inhibitory effect of abciximab pre-incubated for 3 minutes. AA and TF added in vitro activated non-aspirinated PRP: lag-time (LT) and time to peak (TTP) were significantly shortened. Peak TG (PTG) and endogenous thrombin potential (ETG) were increased by AA but not TF; thus, AA seems to be more efficient than TF for TG in this system. Abciximab added in vitro to non-activated, non-aspirinated PRP had no effect on LT, TTP, or ETP, but caused a decrease in PTG that was not statistically significant. Abciximab (3 or 4 μg/mL) added in vitro to AA or TF-activated, non-aspirinated PRP produced no effect on TG, although in aspirinated platelets both LT and time to peak were prolonged. AA as well as TF added in vitro to PRP or in vivo aspirinated PRP increased TG, although AA seems to be more efficient in our assay system. Abciximab, which affects nonaspirinated, nonactivated PRP weakly, has no effect on AA or TF in activated control PRP or in vivo aspirinated PRP.
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Affiliation(s)
- Raul Altman
- Centro de Trombosis de Buenos Aires, School of Medicine, University of Buenos Aires, Argentina.
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Amsterdam EA, Wenger NK, Brindis RG, Casey DE, Ganiats TG, Holmes DR, Jaffe AS, Jneid H, Kelly RF, Kontos MC, Levine GN, Liebson PR, Mukherjee D, Peterson ED, Sabatine MS, Smalling RW, Zieman SJ. 2014 AHA/ACC Guideline for the Management of Patients with Non-ST-Elevation Acute Coronary Syndromes: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol 2014; 64:e139-e228. [PMID: 25260718 DOI: 10.1016/j.jacc.2014.09.017] [Citation(s) in RCA: 2055] [Impact Index Per Article: 205.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Amsterdam EA, Wenger NK, Brindis RG, Casey DE, Ganiats TG, Holmes DR, Jaffe AS, Jneid H, Kelly RF, Kontos MC, Levine GN, Liebson PR, Mukherjee D, Peterson ED, Sabatine MS, Smalling RW, Zieman SJ. 2014 AHA/ACC guideline for the management of patients with non-ST-elevation acute coronary syndromes: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. Circulation 2014; 130:e344-426. [PMID: 25249585 DOI: 10.1161/cir.0000000000000134] [Citation(s) in RCA: 628] [Impact Index Per Article: 62.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Bosch X, Marrugat J, Sanchis J. Platelet glycoprotein IIb/IIIa blockers during percutaneous coronary intervention and as the initial medical treatment of non-ST segment elevation acute coronary syndromes. Cochrane Database Syst Rev 2013:CD002130. [PMID: 24203004 DOI: 10.1002/14651858.cd002130.pub4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND During percutaneous coronary intervention (PCI), and in non-ST segment elevation acute coronary syndromes (NSTEACS), the risk of acute vessel occlusion by thrombosis is high. Glycoprotein IIb/IIIa blockers strongly inhibit platelet aggregation and may prevent mortality and myocardial infarction. This is an update of a Cochrane review first published in 2001, and previously updated in 2007 and 2010. OBJECTIVES To assess the efficacy and safety effects of glycoprotein IIb/IIIa blockers when administered during PCI, and as initial medical treatment in patients with NSTEACS. SEARCH METHODS We updated the searches of the Cochrane Central Register of Controlled Trials (CENTRAL) on The Cochrane Library (Issue 12, 2012), MEDLINE (OVID, 1946 to January Week 1 2013) and EMBASE (OVID, 1947 to Week 1 2013) on 11 January 2013. SELECTION CRITERIA Randomised controlled trials comparing intravenous IIb/IIIa blockers with placebo or usual care. DATA COLLECTION AND ANALYSIS Two authors independently selected studies for inclusion, assessed trial quality and extracted data. We collected major bleeding as adverse effect information from the trials. We used odds ratios (OR) and 95% confidence intervals (CI) for effect measures. MAIN RESULTS Sixty trials involving 66,689 patients were included. During PCI (48 trials with 33,513 participants) glycoprotein IIb/IIIa blockers decreased all-cause mortality at 30 days (OR 0.79, 95% CI 0.64 to 0.97) but not at six months (OR 0.90, 95% CI 0.77 to 1.05). All-cause death or myocardial infarction was decreased both at 30 days (OR 0.66, 95% CI 0.60 to 0.72) and at six months (OR 0.75, 95% CI 0.64 to 0.86), although severe bleeding was increased (OR 1.39, 95% CI 1.21 to 1.61; absolute risk increase (ARI) 8.0 per 1000). The efficacy results were homogeneous for every endpoint according to the clinical condition of the patients, but were less marked for patients pre-treated with clopidogrel, especially in patients without acute coronary syndromes.As initial medical treatment of NSTEACS (12 trials with 33,176 participants), IIb/IIIa blockers did not decrease mortality at 30 days (OR 0.90, 95% CI 0.79 to 1.02) or at six months (OR 1.00, 95% CI 0.87 to 1.15), but slightly decreased death or myocardial infarction at 30 days (OR 0.91, 95% CI 0.85 to 0.98) and at six months (OR 0.88, 95% CI 0.81 to 0.96), although severe bleeding was increased (OR 1.29, 95% CI 1.14 to 1.45; ARI 1.4 per 1000). AUTHORS' CONCLUSIONS When administered during PCI, intravenous glycoprotein IIb/IIIa blockers reduce the risk of all-cause death at 30 days but not at six months, and reduce the risk of death or myocardial infarction at 30 days and at six months, at a price of an increase in the risk of severe bleeding. The efficacy effects are homogeneous but are less marked in patients pre-treated with clopidogrel where they seem to be effective only in patients with acute coronary syndromes. When administered as initial medical treatment in patients with NSTEACS, these agents do not reduce mortality although they slightly reduce the risk of death or myocardial infarction.
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Affiliation(s)
- Xavier Bosch
- Department of Cardiology, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Villarroel 170, Barcelona, Spain, 08036
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Eggers KM, Armstrong PW, Califf RM, Johnston N, Simoons ML, Venge P, James SK. Clinical and prognostic implications of circulating pentraxin 3 levels in non ST-elevation acute coronary syndrome. Clin Biochem 2013; 46:1655-9. [DOI: 10.1016/j.clinbiochem.2013.08.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 08/11/2013] [Accepted: 08/27/2013] [Indexed: 12/30/2022]
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Bosch X, Marrugat J, Sanchis J. Platelet glycoprotein IIb/IIIa blockers during percutaneous coronary intervention and as the initial medical treatment of non-ST segment elevation acute coronary syndromes. Cochrane Database Syst Rev 2013:CD002130. [PMID: 24136036 DOI: 10.1002/14651858.cd002130.pub3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND During percutaneous coronary intervention (PCI), and in non-ST segment elevation acute coronary syndromes (NSTEACS), the risk of acute vessel occlusion by thrombosis is high. Glycoprotein IIb/IIIa blockers strongly inhibit platelet aggregation and may prevent mortality and myocardial infarction. This is an update of a Cochrane review first published in 2001, and previously updated in 2007 and 2010. OBJECTIVES To assess the efficacy and safety effects of glycoprotein IIb/IIIa blockers when administered during PCI, and as initial medical treatment in patients with NSTEACS. SEARCH METHODS We updated the searches of the Cochrane Central Register of Controlled Trials (CENTRAL) on The Cochrane Library (Issue 12, 2012), MEDLINE (OVID, 1946 to January Week 1 2013) and EMBASE (OVID, 1947 to Week 1 2013) on 11 January 2013. SELECTION CRITERIA Randomised controlled trials comparing intravenous IIb/IIIa blockers with placebo or usual care. DATA COLLECTION AND ANALYSIS Two authors independently selected studies for inclusion, assessed trial quality and extracted data. We collected major bleeding as adverse effect information from the trials. We used odds ratios (OR) and 95% confidence intervals (CI) for effect measures. MAIN RESULTS Sixty trials involving 66,689 patients were included. During PCI (48 trials with 33,513 participants) glycoprotein IIb/IIIa blockers decreased all-cause mortality at 30 days (OR 0.79, 95% CI 0.64 to 0.97) but not at six months (OR 0.90, 95% CI 0.77 to 1.05). All-cause death or myocardial infarction was decreased both at 30 days (OR 0.66, 95% CI 0.60 to 0.72) and at six months (OR 0.75, 95% CI 0.64 to 0.86), although severe bleeding was increased (OR 1.39, 95% CI 1.21 to 1.61; absolute risk increase (ARI) 8.0 per 1000). The efficacy results were homogeneous for every endpoint according to the clinical condition of the patients, but were less marked for patients pre-treated with clopidogrel, especially in patients without acute coronary syndromes.As initial medical treatment of NSTEACS (12 trials with 33,176 participants), IIb/IIIa blockers did not decrease mortality at 30 days (OR 0.90, 95% CI 0.79 to 1.02) or at six months (OR 1.00, 95% CI 0.87 to 1.15), but slightly decreased death or myocardial infarction at 30 days (OR 0.91, 95% CI 0.85 to 0.98) and at six months (OR 0.88, 95% CI 0.81 to 0.96), although severe bleeding was increased (OR 1.29, 95% CI 1.14 to 1.45; ARI 1.4 per 1000). AUTHORS' CONCLUSIONS When administered during PCI, intravenous glycoprotein IIb/IIIa blockers reduce the risk of all-cause death at 30 days but not at six months, and reduce the risk of death or myocardial infarction at 30 days and at six months, at a price of an increase in the risk of severe bleeding. The efficacy effects are homogeneous but are less marked in patients pre-treated with clopidogrel where they seem to be effective only in patients with acute coronary syndromes. When administered as initial medical treatment in patients with NSTEACS, these agents do not reduce mortality although they slightly reduce the risk of death or myocardial infarction.
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Affiliation(s)
- Xavier Bosch
- Department of Cardiology, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Villarroel 170, Barcelona, Spain, 08036
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Eggers KM, James S, Venge P, Lindahl B. Prognostic implications of changes in cardiac troponin I levels in patients with non-ST elevation acute coronary syndrome. Biomarkers 2013; 18:668-72. [DOI: 10.3109/1354750x.2013.843023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Anderson JL, Adams CD, Antman EM, Bridges CR, Califf RM, Casey DE, Chavey WE, Fesmire FM, Hochman JS, Levin TN, Lincoff AM, Peterson ED, Theroux P, Wenger NK, Wright RS, Zoghbi WA, Arend TE, Oetgen WJ, May C, Bradfield L, Keller S, Ramadhan E, Tomaselli GF, Brown N, Robertson RM, Whitman GR, Bezanson JL, Hundley J. 2012 ACCF/AHA Focused Update Incorporated Into the ACCF/AHA 2007 Guidelines for the Management of Patients With Unstable Angina/Non–ST-Elevation Myocardial Infarction. Circulation 2013; 127:e663-828. [DOI: 10.1161/cir.0b013e31828478ac] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Anderson JL, Adams CD, Antman EM, Bridges CR, Califf RM, Casey DE, Chavey WE, Fesmire FM, Hochman JS, Levin TN, Lincoff AM, Peterson ED, Theroux P, Wenger NK, Wright RS, Jneid H, Ettinger SM, Ganiats TG, Philippides GJ, Jacobs AK, Halperin JL, Albert NM, Creager MA, DeMets D, Guyton RA, Kushner FG, Ohman EM, Stevenson W, Yancy CW. 2012 ACCF/AHA focused update incorporated into the ACCF/AHA 2007 guidelines for the management of patients with unstable angina/non-ST-elevation myocardial infarction: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol 2013; 61:e179-347. [PMID: 23639841 DOI: 10.1016/j.jacc.2013.01.014] [Citation(s) in RCA: 373] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Jneid H, Anderson JL, Wright RS, Adams CD, Bridges CR, Casey DE, Ettinger SM, Fesmire FM, Ganiats TG, Lincoff AM, Peterson ED, Philippides GJ, Theroux P, Wenger NK, Zidar JP. 2012 ACCF/AHA/ACP/AATS/PCNA/SCAI/STS Guideline for the diagnosis and management of patients with stable ischemic heart disease: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines, and the American College of Physicians, American Association for Thoracic Surgery, Preventive Cardiovascular Nurses Association, Society for Cardiovascular Angiography and Interventions, and Society of Thoracic Surgeons. J Am Coll Cardiol 2012; 60:645-81. [PMID: 22809746 DOI: 10.1016/j.jacc.2012.06.004] [Citation(s) in RCA: 446] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jneid H, Anderson JL, Wright RS, Adams CD, Bridges CR, Casey DE, Ettinger SM, Fesmire FM, Ganiats TG, Lincoff AM, Peterson ED, Philippides GJ, Theroux P, Wenger NK, Zidar JP, Anderson JL. 2012 ACCF/AHA focused update of the guideline for the management of patients with unstable angina/Non-ST-elevation myocardial infarction (updating the 2007 guideline and replacing the 2011 focused update): a report of the American College of Cardiology Foundation/American Heart Association Task Force on practice guidelines. Circulation 2012; 126:875-910. [PMID: 22800849 DOI: 10.1161/cir.0b013e318256f1e0] [Citation(s) in RCA: 356] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Baechler CJ, Kottke TE. Identifying opportunities for a medical group to improve outcomes for patients with coronary artery disease and heart failure: an exploratory study. Perm J 2011; 15:4-14. [PMID: 21841919 DOI: 10.7812/tpp/11-012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
CONTEXT A decision-support tool was created to identify opportunities to improve outcomes for patients with coronary artery disease and heart failure by delivering all efficacious interventions; that is, "optimizing" care. When national data were applied, nearly 75% of the deaths that could be prevented or postponed by optimizing care for patients with heart disease would occur among ambulatory patients. OBJECTIVE The purpose of this analysis is two-fold: 1) to determine whether medical group data are adequate to use in the decision-support tool, and 2) to determine whether the conclusions generated from the medical group data are similar to the conclusions generated from US data. DESIGN/MAIN OUTCOME MEASURE: The potential impact of optimizing care for patients age 40 to 75 years treated for coronary artery disease and heart failure by a multispecialty group between August 2007 and July 2008 was calculated using deaths that might be prevented or postponed if optimal care was achieved. RESULTS The greatest opportunity to prevent or postpone deaths-70% of the total opportunity-lies with optimizing care for ambulatory patients. Optimizing care for patients hospitalized for acute myocardial infarction with or without ST-segment elevation on electrocardiography would prevent or postpone only 2% of deaths. CONCLUSIONS This study demonstrates that 1) it is feasible to use the decision-support tool to analyze opportunities for improvement in a medical group, and 2) as concluded from national data analysis, optimizing ambulatory care presents the greatest opportunity to improve outcomes for patients with heart disease.
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Kaluski E. The Role of Glycoprotein IIb/IIIa Inhibitors- A Promise Not Kept? Curr Cardiol Rev 2011; 4:84-91. [PMID: 19936282 PMCID: PMC2779356 DOI: 10.2174/157340308784245793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Revised: 05/17/2007] [Accepted: 05/30/2007] [Indexed: 11/22/2022] Open
Abstract
For over one decade Glycoproteins IIb/IIIa inhibitors (GPI) have been administered to prevent coronary artery thrombosis. Initially these agents were used for acute coronary syndromes and subsequently as adjunctive pharmacotherapy for percutaneous coronary interventions (PCIs). Most benefit of GPI emerged from reduction of ischemic events: mostly non-q-wave myocardial infarctions (NQWMIs) during PCI. However, individual randomized clinical trials could not demonstrate that any of these agents could significantly reduce mortality in any clinical subset of patients. Studies of employing prolonged oral GPI administration resulted in excessive death. The non-homogenous statistically-significant reduction of ischemic endpoints was accompanied by an excess of bleeding, vascular complications, and thrombocytopenia. The clinical and ecomomic burden of major bleeding and thrombocytopenia is substantial. The ACUITY trial has initiate a new debate regarding the efficacy and safety of GPI. Selective “patient-tailored” use of GPI limited to moderate-high risk PCI patients with low bleeding propensity is suggested. Research of new algorithms emphasizing abbreviated GPI administration, careful access site and bleeding surveillance, in conjunction with lower doses of unfractionated heparin or new and safer anti-thrombins may further enhance patient safety.
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Affiliation(s)
- Edo Kaluski
- Department of Cardiology, University Medical Center, University of Medicine and Dentistry, Newark, NJ, USA
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Wright RS, Anderson JL, Adams CD, Bridges CR, Casey DE, Ettinger SM, Fesmire FM, Ganiats TG, Jneid H, Lincoff AM, Peterson ED, Philippides GJ, Theroux P, Wenger NK, Zidar JP. 2011 ACCF/AHA Focused Update of the Guidelines for the Management of Patients With Unstable Angina/Non–ST-Elevation Myocardial Infarction (Updating the 2007 Guideline). J Am Coll Cardiol 2011; 57:1920-59. [PMID: 21450428 DOI: 10.1016/j.jacc.2011.02.009] [Citation(s) in RCA: 230] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Heller E, Dangas GD. Heparin, LMWH, GIIb/IIIa, and Direct Thrombin Inhibitors. Interv Cardiol 2011. [DOI: 10.1002/9781444319446.ch9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Wright RS, Anderson JL, Adams CD, Bridges CR, Casey DE, Ettinger SM, Fesmire FM, Ganiats TG, Jneid H, Lincoff AM, Peterson ED, Philippides GJ, Theroux P, Wenger NK, Zidar JP, Jacobs AK. 2011 ACCF/AHA Focused Update of the Guidelines for the Management of Patients With Unstable Angina/ Non-ST-Elevation Myocardial Infarction (Updating the 2007 Guideline): a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines. Circulation 2011; 123:2022-60. [PMID: 21444889 DOI: 10.1161/cir.0b013e31820f2f3e] [Citation(s) in RCA: 237] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Bosch X, Marrugat J, Sanchis J. Platelet glycoprotein IIb/IIIa blockers during percutaneous coronary intervention and as the initial medical treatment of non-ST segment elevation acute coronary syndromes. Cochrane Database Syst Rev 2010:CD002130. [PMID: 20824831 DOI: 10.1002/14651858.cd002130.pub2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND During percutaneous coronary intervention (PCI), and in non-ST segment elevation acute coronary syndromes (NSTEACS), the risk of acute vessel occlusion by thrombosis is high. IIb/IIIa blockers strongly inhibit platelet aggregation and may prevent mortality and myocardial infarction (MI). This is an update of a Cochrane review first published in 2001, and previously updated in 2007. OBJECTIVES To assess the effects and safety of IIb/IIIa blockers when administered during PCI, and as initial medical treatment in patients with NSTEACS. SEARCH STRATEGY We searched the Cochrane Central Register of Controlled Trials (CENTRAL) on The Cochrane Library (Issue 3, 2009), MEDLINE (1966 to October 2009), and EMBASE (1980 to October 2009). SELECTION CRITERIA Randomised controlled trials comparing intravenous IIb/IIIa blockers with placebo or usual care. DATA COLLECTION AND ANALYSIS Two authors independently selected studies for inclusion, assessed trial quality and extracted data. We collected major bleeding as adverse effect information from the trials. Odds ratios (OR) and 95% confidence intervals (CI) were used for effect measures. MAIN RESULTS Forty-eight trials involving 62,417 patients were included. During PCI, IIb/IIIa blockers decreased mortality at 30 days (OR 0.76, 95% CI 0.62 to 0.95) and at six months (OR 0.84, 95% CI 0.71 to 1.00). Death or MI was decreased both at 30 days (OR 0.65, 95% CI 0.60 to 0.72), and at 6 months (OR 0.70, 95% CI 0.61 to 0.81), although severe bleeding was increased (OR 1.38, 95% CI 1.20 to 1.59; absolute risk increase (ARI) 8.0 per 1000). The efficacy results were homogeneous for every endpoint according to the clinical condition of the patients, but were less marked for patients pre-treated with clopidogrel, especially in patients without ACS.As initial medical treatment of NSTEACS, IIb/IIIa blockers did not decrease mortality at 30 days (OR 0.91, 95% CI 0.80 to 1.03) or at six months (OR 1.00, 95% CI 0.87 to 1.15), but slightly decreased death or MI at 30 days (OR 0.92, 95% CI 0.86 to 0.99) and at six months (OR 0.88, 95% CI 0.81 to 0.96), although severe bleeding was increased (OR 1.27, 95% CI 1.12 to 1.43; ARI 1.4 per 1000). AUTHORS' CONCLUSIONS When administered during PCI, intravenous IIb/IIIa blockers reduce the risk of death and of death or MI at 30 days and at six months, at a price of an increase in the risk of severe bleeding. The efficacy effects are homogeneous but are less marked in patients pre-treated with clopidogrel where they seem to be effective only in patients with ACS. When administered as initial medical treatment in patients with NSTEACS, these agents do not reduce mortality although they slightly reduce the risk of death or MI.
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Affiliation(s)
- Xavier Bosch
- Department of Cardiology, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Villarroel 170, Barcelona, Spain, 08036
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Valgimigli M. Balancing safety and efficacy: recent clinical evidence optimizing outcomes in patients with intermediate to high-risk non-ST-segment elevated acute coronary syndrome. Eur Heart J Suppl 2010. [DOI: 10.1093/eurheartj/suq021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Eggers KM, Armstrong PW, Califf RM, Simoons ML, Venge P, Wallentin L, James SK. ST2 and mortality in non-ST-segment elevation acute coronary syndrome. Am Heart J 2010; 159:788-94. [PMID: 20435187 DOI: 10.1016/j.ahj.2010.02.022] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2009] [Accepted: 02/23/2010] [Indexed: 01/06/2023]
Abstract
BACKGROUND ST2 is a member of the interleukin-1 receptor family that is up-regulated in conditions associated with increased myocardial strain. ST2 has been shown to be independently predictive of adverse outcome in heart failure and ST-segment elevation myocardial infarction, but its prognostic value in non-ST-elevation acute coronary syndrome (NSTE-ACS) has not been established. METHODS We measured ST2 at randomization and after 24, 48, and 72 hours in 403 NSTE-ACS patients from the GUSTO IV study, and studied its kinetics and its associations to clinical baseline factors and 1-year mortality. RESULTS Median ST2 levels decreased from 28.4 U/mL at randomization to 21.8 U/mL at 72 hours (P < .001). Peak levels were noted 6 to 17 hours after symptom onset. Randomization ST2 levels were independently associated to N-terminal pro-B-type natriuretic peptide but otherwise exhibited only weak relations to cardiovascular risk factors and comorbidities, and biomarkers of myocardial necrosis or inflammation. ST2 was related to 1-year mortality independently of clinical risk indicators (odds ratio 2.3 [95% CI 1.1-4.6], P = .03) but lost its predictive value after additional adjustment for prognostic biomarkers, in particular N-terminal pro-B-type natriuretic peptide. CONCLUSIONS ST2 levels are elevated early in NSTE-ACS and predict 1-year mortality. Our data indicate that ST2 represents an interesting novel pathophysiologic pathway in the setting of ischemia-related myocardial dysfunction. However, future prospective evaluations in larger populations are needed before the clinical utility of ST2 can be determined.
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Affiliation(s)
- Kai M Eggers
- Department of Medical Sciences, Uppsala University, Sweden.
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Venge P, Johnston N, Lindahl B, James S. Normal plasma levels of cardiac troponin I measured by the high-sensitivity cardiac troponin I access prototype assay and the impact on the diagnosis of myocardial ischemia. J Am Coll Cardiol 2009; 54:1165-72. [PMID: 19761938 DOI: 10.1016/j.jacc.2009.05.051] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2009] [Revised: 03/23/2009] [Accepted: 05/04/2009] [Indexed: 01/12/2023]
Abstract
OBJECTIVES This study sought to evaluate the analytical and clinical performance of the novel hypersensitive cardiac troponin I (cTnI) prototype assay from Beckman Coulter (Fullerton, California). BACKGROUND Studies on patients with acute coronary syndromes and on seemingly healthy subjects have shown that even very minor elevations of cardiac troponins are associated with an increased risk of death. However, the normal plasma levels of cardiac troponins are still not known. METHODS cTnI plasma levels were measured in 542 healthy subjects, 319 men (age 59.9 +/- 11.8 years) and 213 women (age 59.8 +/- 13.1 years), and in 1,503 randomly selected patients of the GUSTO IV (Global Utilization of Strategies To open Occluded arteries IV) cohort with unstable angina and non-ST-segment elevation myocardial infarctions (MIs). RESULTS The cTnI levels at 10% coefficient of variation and 20% coefficient of variation imprecision were 0.0033 and 0.0016 microg/l, respectively. The cTnI levels were measurable in >95% of the healthy subjects. The median level of healthy subjects <60 years of age was 0.0032 microg/l (range 0.0011 to 0.0079 microg/l) with the 99th percentile being 0.010 microg/l. No sex differences were observed. A receiver-operator characteristic curve analysis showed an optimal discrimination between healthy subjects and patients at 0.0064 microg/l with a sensitivity of 84.8% (95% confidence interval: 82.8% to 86.6%) and specificity of 89.7% (95% confidence interval: 86.8% to 92.2%). Outcomes as to death and/or MI were significantly different at this level (p < 0.01) in the GUSTO IV cohort. CONCLUSIONS The novel high-sensitivity cTnI prototype assay from Beckman Coulter allows for the first time the measurement of cTnI levels in almost all healthy subjects. Our data indicate that the assay may be a powerful aid in the diagnosis and outcome prediction of patients with suspected myocardial ischemia and question any definition of myocardial infarction.
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Affiliation(s)
- Per Venge
- Department of Medical Sciences, University of Uppsala, Sweden.
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Braunwald E, Angiolillo D, Bates E, Berger PB, Bhatt D, Cannon CP, Furman MI, Gurbel P, Michelson AD, Peterson E, Wiviott S. Antiplatelet strategies: evaluating their current role in the setting of acute coronary syndromes. Clin Cardiol 2009; 31:I2-9. [PMID: 18481818 DOI: 10.1002/clc.20362] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Numerous clinical trials have established the value of antiplatelet therapies for acute coronary syndromes (ACS). Aspirin (ASA), thienopyridines (i.e., clopidogrel and ticlopidine) and GP IIb/IIIa antagonists comprise the major classes of antiplatelet therapies demonstrated to be of benefit in the treatment of ACS and for the prevention of thrombotic complications of percutaneous coronary intervention (PCI). Clopidogrel is beneficial when administered before and after PCI, and is more effective when combined with either ASA or GP IIb/IIIa inhibitors in preventing post-PCI complications, coronary subacute stent thrombosis, and thrombotic events in general. It is currently unclear whether a higher loading dose of clopidogrel (600 mg) is better than the standard loading dose (300 mg), how long therapy should continue, and which maintenance dose is optimal. The role of the GP IIb/IIIa antagonists in ACS is less clear due to conflicting data from several studies with different patient populations. Currently, it appears that the use of GP IIb/IIIa antagonists might be most beneficial in high-risk ACS patients scheduled to undergo PCI, who demonstrate non-ST-segment elevation myocardial infarction and elevated troponin levels.
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Affiliation(s)
- Eugene Braunwald
- TIMI Study Group, Cardiovascular Division, Brigham and Women's Hospital, Department of Medicine, Harvard Medical School, 350 Longwood Avenue, Boston, Massachusetts 02115, USA.
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Kottke TE, Faith DA, Jordan CO, Pronk NP, Thomas RJ, Capewell S. The comparative effectiveness of heart disease prevention and treatment strategies. Am J Prev Med 2009; 36:82-88. [PMID: 19095166 DOI: 10.1016/j.amepre.2008.09.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Revised: 06/13/2008] [Accepted: 09/08/2008] [Indexed: 11/30/2022]
Abstract
BACKGROUND Policymakers must be able to calculate the comparative effectiveness of interventions to control heart disease if they are to optimize the population impact of programmatic initiatives. METHODS A model was created to calculate the number of deaths that would be prevented or postponed if perfect care for heart disease prevention and treatment were achieved--that is, the elimination of risk factors and the prescription of all effective medications before and between acute events, and the delivery of all effective therapies to individuals suffering an acute heart disease event. The impact of perfect care was calculated for a hypothetic population aged 30-84 years with risk-factor levels, event rates, current patterns of behavior, levels of treatment, and mortality rates resembling those of the U.S. The analysis was performed in 2007 and 2008. RESULTS In this population, 44% of all deaths were due to heart disease. Perfect care before the first heart disease event would prevent or postpone 33% of all deaths. Perfect care between acute events would prevent or postpone 23% of all deaths. Perfect care during acute events would prevent or postpone 8% of all deaths. CONCLUSIONS This direct comparison of heart disease prevention and treatment strategies indicates that nearly 90% of the impact from perfect care for heart disease would accrue from interventions before and between acute events. The impact of risk-factor interventions before or between events is amplified by the fact that these interventions also reduce the risk of death from other chronic diseases.
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Affiliation(s)
- Thomas E Kottke
- HealthPartners Research Foundation, Minneapolis, Minnesota 55440-1524, USA.
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Venge P, James S, Jansson L, Lindahl B. Clinical Performance of Two Highly Sensitive Cardiac Troponin I Assays. Clin Chem 2009; 55:109-16. [DOI: 10.1373/clinchem.2008.106500] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Background: The aim of this study was to compare the clinical performance of 2 sensitive cTnI assays with 10% CV imprecision below the 99th percentile upper reference limit.
Methods: We measured cardiac troponin and N-terminal pro-brain natriuretic peptide (NT-proBNP) concentrations in a random sample of the Global Use of Strategies To Open Occluded Coronary Arteries (GUSTO) IV cohort (n = 1251). Outcome data of 1-year mortality and the composite endpoint DMI [death and/or myocardial infarction (MI) within 30 days] were available in all patients. The 99th percentile of a healthy population was estimated from the Sweden Women and Men and Ischemic Heart Disease (SWISCH) cohort (n = 442). We measured cardiac troponin I (cTnI) using the Access AccuTnI (Beckman Coulter) and Centaur TnI Ultra (Siemens Healthcare Diagnostics) and NT-proBNP using the Elecsys 2010 (Roche Diagnostics).
Results: Applying the 10% CV cutoff, the sensitivity of the Access AccuTnI assay in identifying DMI and death was higher than that of the Centaur TnI Ultra (P = 0.02 and P < 0.001), and the AccuTnI assay also identified more patients at risk (P < 0.001) and with poor outcome. Applying the 99th percentile cutoffs, AccuTnI identified more patients at risk than the Centaur TnI (P < 0.001) and with significant differences in outcome. Significantly more patients with cardiac troponins below the cutoffs as measured by Centaur TnI had increased NT-proBNP concentrations (P < 0.001) compared with AccuTnI.
Conclusions: The AccuTnI assay identified more patients at risk than the Centaur cTnI Ultra assay. Our results demonstrate the clinical potential of high-sensitivity cardiac troponin assays for the identification of patients at risk of dying from cardiovascular disease.
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Affiliation(s)
- Per Venge
- Department of Medical Sciences, Clinical Chemistry, University of Uppsala
| | - Stefan James
- Department of Medical Sciences, Cardiology, University of Uppsala
- Uppsala Clinical Research Centre, University of Uppsala, Uppsala, Sweden
| | - Leif Jansson
- Department of Clinical Chemistry, County Hospital of Gävle, Gävle, Sweden
| | - Bertil Lindahl
- Department of Medical Sciences, Cardiology, University of Uppsala
- Uppsala Clinical Research Centre, University of Uppsala, Uppsala, Sweden
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Artham SM, Lavie CJ, Milani RV, Ventura HO. The obesity paradox: impact of obesity on the prevalence and prognosis of cardiovascular diseases. Postgrad Med 2008; 120:34-41. [PMID: 18654066 DOI: 10.3810/pgm.2008.07.1788] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Obesity has reached global epidemic proportions and is associated with numerous comorbidities such as hypertension (HTN), type 2 diabetes mellitus, dyslipidemia, certain cancers, and chronic kidney disease (CKD). Obesity, via its direct maladaptive effects on cardiac structure and through its impact on conventional risk factors, is strongly associated with cardiovascular (CV) diseases such as heart failure (HF) and coronary heart disease (CHD). Despite these adverse associations, numerous studies indicate an "obesity paradox" in that being overweight or obese is associated with a favorable prognosis in many patients with established CV disease, particularly in patients with HTN, HF, and CHD. This review summarizes the adverse effects of obesity on CV disease risk factors and its role in the genesis of HTN, HF, CHD, and the obesity paradox. It concludes with a discussion on the potential benefits of weight loss in these patient populations.
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Kaluski E, Haider B, Milo-Cotter O, Klapholz M. Glycoprotein IIb/IIIa inhibitors: questioning indications and treatment algorithms. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2007; 8:281-8. [PMID: 18053951 DOI: 10.1016/j.carrev.2007.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Accepted: 03/30/2007] [Indexed: 11/27/2022]
Abstract
Glycoprotein inhibitors (GPI) are viewed as beneficial adjunctive pharmacotherapy agents for percutaneous coronary interventions (PCIs). The major benefit of GPI is derived from the reduction of ischemic events (mostly non-Q-wave myocardial infarctions) during PCI. There is no single randomized clinical trial demonstrating that any of these agents significantly reduces mortality in any clinical subset of patients. Studies of sustained oral GPI resulted in excessive death and myocardial infarctions. Reduction of ischemic end points was counteracted by excessive bleeding, vascular complications, and thrombocytopenia. These complications bear considerable medical and economic impact. The Acute Catheterization and Early Intervention Triage Strategy trial demonstrated that GPI, when added to heparin, enoxaparine, or bivalirudin, do not reduce mortality or ischemic events but significantly increase bleeding complications. Major bleeding resulted in threefold mortality at 1 year. In view of available data, the use of GPI should be limited to moderate-risk to high-risk PCI patients with low bleeding propensity. Protocols of abbreviated GPI administration and careful bleeding surveillance, in conjunction with lower doses of unfractionated heparin or new and possibly safer antithrombins, can potentially improve patient safety.
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Affiliation(s)
- Edo Kaluski
- Department of Cardiology, University Medical Center, University of Medicine and Dentistry, Newark, NJ 07101, USA.
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Steinhubl SR, Schneider DJ, Berger PB, Becker RC. Determining the efficacy of antiplatelet therapies for the individual: lessons from clinical trials. J Thromb Thrombolysis 2007; 26:8-13. [DOI: 10.1007/s11239-007-0160-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Accepted: 10/15/2007] [Indexed: 12/31/2022]
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Westerhout CM, Gnarpe J, Chang WC, FitzPatrick S, Barnathan ES, Boersma E, Califf RM, Wallentin L, Simoons ML, Armstrong PW. No prognostic significance of chronic infection with Chlamydia pneumoniae in acute coronary syndromes: insights from the Global Utilization of Strategies to Open Occluded Arteries IV Acute Coronary Syndromes trial. Am Heart J 2007; 154:306-12. [PMID: 17643581 DOI: 10.1016/j.ahj.2007.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Accepted: 04/02/2007] [Indexed: 11/29/2022]
Abstract
BACKGROUND Although relationships between chronic Chlamydia pneumoniae (Cpn) infection and the risk of coronary events in stable coronary artery disease patients have been reported, a similar link in acute coronary syndrome (ACS) patients has not been consistently observed. METHODS In a nested case-control substudy of the Global Utilization of Strategies to Open Occluded Arteries IV Acute Coronary Syndromes trial, 295 cases (30-day death/myocardial infarction [MI]) were matched by age, sex, baseline creatine kinase-myocardial kinase, and smoking status with 295 control subjects. To test the hypothesis on 1-year mortality, another subset (n = 276) was drawn from the 590-patient cohort; 138 patients who died at 1 year plus the matching controls who survived at 1 year. We measured Cpn IgG and IgA antibody titers in baseline serum with microimmunofluorescence. Conditional logistic regression was used to quantify the prognostic relevance seropositivity (IgG > or = 1:32; IgA > or = 1:16) and elevated titer levels. RESULTS The prevalence of Cpn IgG and IgA was similar between cases and controls (30-day death/MI: IgG, 80% vs 85%, P = .126; IgA, 45% vs 37%, P = .079), and were not statistically significant predictors of 30-day death/MI after baseline adjustment. Likewise, the 1-year death cohort had comparable proportions of Cpn IgG and IgA among cases and controls (86% vs 91% [P = .265] and 49% vs 43% [P = .334], respectively), and did not add prognostic value. CONCLUSIONS These findings are in concert with study results suggesting that chronic Cpn infection is not associated with 30-day death/MI or 1-year mortality in non-ST elevation ACS.
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Affiliation(s)
- Cynthia M Westerhout
- Heritage Medical Research Centre, University of Alberta, Edmonton, Alberta, Canada T6G 2S2.
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Albert N. Non?ST segment elevation acute coronary syndromes: Treatment guidelines for the nurse practitioner. ACTA ACUST UNITED AC 2007; 19:277-89. [PMID: 17535337 DOI: 10.1111/j.1745-7599.2007.00227.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE To increase awareness among nurse practitioners (NPs) of the American College of Cardiology (ACC)/American Heart Association (AHA) 2002 guideline update for the diagnosis and treatment of acute coronary syndrome, and for secondary prevention in patients with unstable angina (UA) and non-ST segment elevation myocardial infarction (NSTEMI). DATA SOURCES ACC/AHA 2002 guideline update for the management of patients with UA and NSTEMI, ACC/AHA guidelines for patients with coronary and other atherosclerotic vascular disease, 2006 update, selected research and clinical articles. CONCLUSIONS Recent research has shown that patients with UA/NSTEMI benefit from the routine, long-term use of dual antiplatelet therapy with aspirin and clopidogrel. In suitable patients, outcome is also improved by adoption of an early invasive strategy combined with aggressive medical therapy. IMPLICATIONS FOR PRACTICE Familiarity with the patient as well as current management recommendations can improve clinical outcomes for patients with UA/NSTEMI. Thus, NPs can play a pivotal role in the management of coronary disease, both during and following an acute ischemic event.
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Affiliation(s)
- Nancy Albert
- Division of Nursing and CNS, Kaufman Center for Heart Failure, Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA.
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Wollert KC, Kempf T, Peter T, Olofsson S, James S, Johnston N, Lindahl B, Horn-Wichmann R, Brabant G, Simoons ML, Armstrong PW, Califf RM, Drexler H, Wallentin L. Prognostic value of growth-differentiation factor-15 in patients with non-ST-elevation acute coronary syndrome. Circulation 2007; 115:962-71. [PMID: 17283261 DOI: 10.1161/circulationaha.106.650846] [Citation(s) in RCA: 262] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Growth-differentiation factor-15 (GDF-15) is a member of the transforming growth factor-beta cytokine superfamily that is induced in the heart after ischemia-and-reperfusion injury. Circulating levels of GDF-15 may provide prognostic information in patients with non-ST-elevation acute coronary syndrome. METHODS AND RESULTS Blood samples were obtained on admission from 2081 patients with acute chest pain and either ST-segment depression or troponin elevation who were included in the Global Utilization of Strategies to Open Occluded Arteries (GUSTO)-IV Non-ST-Elevation Acute Coronary Syndrome trial and from a matching cohort of 429 apparently healthy individuals. GDF-15 levels were determined by immunoradiometric assay. Approximately two thirds of patients presented with GDF-15 levels above the upper limit of normal in healthy controls (1200 ng/L); one third presented with levels >1800 ng/L. Increasing tertiles of GDF-15 were associated with an enhanced risk of death at 1 year (1.5%, 5.0%, and 14.1%; P<0.001). By multiple Cox regression analysis, only the levels of GDF-15 and N-terminal pro-B-type natriuretic peptide, together with age and a history of previous myocardial infarction, contributed independently to 1-year mortality risk. Receiver operating characteristic curve analyses further illustrated that GDF-15 is a strong marker of 1-year mortality risk (area under the curve, 0.757; best cutoff, 1808 ng/L). At this cutoff value, GDF-15 added significant prognostic information in patient subgroups defined by age; gender; time from symptom onset to admission; cardiovascular risk factors; previous cardiovascular disease; and the risk markers ST-segment depression, troponin T, N-terminal pro-B-type natriuretic peptide, C-reactive protein, and creatinine clearance. CONCLUSIONS GDF-15 is a new biomarker of the risk for death in patients with non-ST-elevation acute coronary syndrome that provides prognostic information beyond that provided by established clinical and biochemical markers.
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Affiliation(s)
- Kai C Wollert
- Department of Cardiology and Angiology, Hannover Medical School, Germany.
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Martinez-Rumayor A, Januzzi JL. Non-ST Segment Elevation Acute Coronary Syndromes: A Comprehensive Review. South Med J 2006; 99:1103-10. [PMID: 17100031 DOI: 10.1097/01.smj.0000215764.22650.29] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
As the non-ST segment elevation acute coronary syndromes (NSTEACS) include unstable angina pectoris (UAP) and the non-ST segment elevation myocardial infarction (NSTEMI), acute diagnosis and risk stratification can often prove challenging. This review will cover guidelines and strategies for risk assessment, contemporary approaches to acute patient management as well as recommendations for timing of specialist referral.
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Affiliation(s)
- Abelardo Martinez-Rumayor
- Department of Medicine and Division of Cardiology, Massachusetts General Hospital, Harvard Medical School, Boston MA 02114, USA
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Westerhout CM, Fu Y, Lauer MS, James S, Armstrong PW, Al-Hattab E, Califf RM, Simoons ML, Wallentin L, Boersma E. Short- and Long-Term Risk Stratification in Acute Coronary Syndromes. J Am Coll Cardiol 2006; 48:939-47. [PMID: 16949483 DOI: 10.1016/j.jacc.2006.04.085] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2006] [Revised: 03/28/2006] [Accepted: 04/24/2006] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The purpose of this study was to develop 30-day and 1-year risk stratification models for non-ST-segment elevation acute coronary syndrome (NSTE-ACS) patients that incorporate quantitative ST-segment depression and novel biomarkers. BACKGROUND Several novel biomarkers have changed the risk profile of ACS; thus, the reassessment of traditional indicators such as ST-segment depression in this new context is warranted. METHODS Multivariable logistic regression was used to identify significant predictors of 30-day death and death/myocardial infarction (MI) and 1-year mortality in 7,800 NSTE-ACS patients enrolled in the GUSTO-IV (Global Utilization of Strategies to Open Occluded Arteries-IV ACS) trial between 1998 and 2000. RESULTS Among all other predictors, the degree of ST-segment depression had the highest prognostic value for 30-day death, 30-day death/MI, and 1-year death. Troponin T (TnT), creatinine clearance, N-terminal pro-brain natriuretic peptide (NT-proBNP), heart rate, and age were also highly influential on adverse outcomes. Unlike TnT and NT-proBNP, C-reactive protein was only predictive of long-term death. In contrast to mortality, the contribution of TnT to predicting 30-day death/MI increased, whereas NT-proBNP's role was attenuated. The discriminatory power was excellent (c-index [adjusted for over-optimism]: 0.82 [30-day death]; 0.72 [30-day death/MI]; 0.81 [1-year]). CONCLUSIONS In this large contemporary study of NSTE-ACS patients, novel insights into risk stratification were observed-in particular, the utility of quantitative ST-segment depression and multiple biomarkers. Collection of these indicators in future NSTE-ACS populations is recommended to evaluate generalizability and clinical application of these findings.
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Romero-Corral A, Montori VM, Somers VK, Korinek J, Thomas RJ, Allison TG, Mookadam F, Lopez-Jimenez F. Association of bodyweight with total mortality and with cardiovascular events in coronary artery disease: a systematic review of cohort studies. Lancet 2006; 368:666-78. [PMID: 16920472 DOI: 10.1016/s0140-6736(06)69251-9] [Citation(s) in RCA: 1117] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Studies of the association between obesity, and total mortality and cardiovascular events in patients with coronary artery disease (CAD) have shown contradictory results. We undertook a systematic review to determine the extent and nature of this association. METHODS We selected cohort studies that provided risk estimates for total mortality, with or without cardiovascular events, on the basis of bodyweight or obesity measures in patients with CAD, and with at least 6 months' follow-up. CAD was defined as history of percutaneous coronary intervention, coronary artery bypass graft, or myocardial infarction. We obtained risk estimates for five predetermined bodyweight groups: low, normal weight (reference), overweight, obese, and severely obese. FINDINGS We found 40 studies with 250,152 patients that had a mean follow-up of 3.8 years. Patients with a low body-mass index (BMI) (ie, <20) had an increased relative risk (RR) for total mortality (RR=1.37 [95% CI 1.32-1.43), and cardiovascular mortality (1.45 [1.16-1.81]), overweight (BMI 25-29.9) had the lowest risk for total mortality (0.87 [0.81-0.94]) and cardiovascular mortality (0.88 [0.75-1.02]) compared with those for people with a normal BMI. Obese patients (BMI 30-35) had no increased risk for total mortality (0.93 [0.85-1.03]) or cardiovascular mortality (0.97 [0.82-1.15]). Patients with severe obesity (> or =35) did not have increased total mortality (1.10 [0.87-1.41]) but they had the highest risk for cardiovascular mortality (1.88 [1.05-3.34]). INTERPRETATION The better outcomes for cardiovascular and total mortality seen in the overweight and mildly obese groups could not be explained by adjustment for confounding factors. These findings could be explained by the lack of discriminatory power of BMI to differentiate between body fat and lean mass.
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Affiliation(s)
- Abel Romero-Corral
- Division of Cardiovascular Diseases, Mayo Clinic College of Medicine, Mayo Foundation, Rochester, MN 55905, USA
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Morrow DA, Scirica BM, Karwatowska-Prokopczuk E, Skene A, McCabe CH, Braunwald E. Evaluation of a novel anti-ischemic agent in acute coronary syndromes: Design and rationale for the Metabolic Efficiency with Ranolazine for Less Ischemia in Non–ST-elevation acute coronary syndromes (MERLIN)-TIMI 36 trial. Am Heart J 2006. [DOI: 10.1016/j.ahj.2006.06.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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37
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Morrow DA, Scirica BM, Karwatowska-Prokopczuk E, Skene A, McCabe CH, Braunwald E. Evaluation of a novel anti-ischemic agent in acute coronary syndromes: design and rationale for the Metabolic Efficiency with Ranolazine for Less Ischemia in Non-ST-elevation acute coronary syndromes (MERLIN)-TIMI 36 trial. Am Heart J 2006; 151:1186.e1-9. [PMID: 16781216 DOI: 10.1016/j.ahj.2006.01.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2005] [Accepted: 01/19/2006] [Indexed: 12/19/2022]
Abstract
BACKGROUND Despite advances in antithrombotic therapies and invasive technology, the risk of recurrent ischemic complications in patients with non-ST-elevation acute coronary syndromes (NSTE-ACSs) remains substantial. Ranolazine is a novel agent that inhibits the late sodium current thereby reducing cellular sodium and calcium overload and has been shown to reduce ischemia in patients with chronic stable angina. STUDY DESIGN MERLIN-TIMI 36 is a phase III, randomized, double-blind, parallel-group, placebo-controlled, multinational clinical trial to evaluate the efficacy and safety of ranolazine during long-term treatment of patients with NSTE-ACS receiving standard therapy (N = 6500). Eligible patients are randomized 1:1 to ranolazine or matched placebo, initiated as 200 mg intravenously over 1 hour, followed by an 80-mg/h infusion (40 mg/h for patients with severe renal insufficiency) for up to 96 hours and oral ranolazine ER 1000 mg BID or matched placebo until the end of study. The primary end point is the time to first occurrence of any element of the composite of cardiovascular death, myocardial infarction, or recurrent ischemia. Secondary end points include ischemia on Holter monitoring, hospitalization for new or worsening heart failure, quality of life measures, and exercise performance. The evaluation of long-term safety will include death from any cause and symptomatic documented arrhythmia. Recruitment began in October 2004. The trial will continue until 730 major cardiovascular events and 310 deaths are recorded with expected completion in 24 to 28 months. CONCLUSIONS MERLIN-TIMI 36 will evaluate the role of ranolazine in the acute and chronic management of patients presenting with NSTE-ACS.
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Affiliation(s)
- David A Morrow
- TIMI Study Group, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
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James S, Flodin M, Johnston N, Lindahl B, Venge P. The Antibody Configurations of Cardiac Troponin I Assays May Determine Their Clinical Performance. Clin Chem 2006; 52:832-7. [PMID: 16543388 DOI: 10.1373/clinchem.2005.064857] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Background: Previous studies have shown superior clinical performance of the cardiac troponin I (cTnI) assay from Beckman-Coulter Diagnostics. This assay had a unique combination of monoclonal antibodies with 2 monoclonal antibodies directed against epitopes near the NH2 terminus of the heart-specific region of troponin I. The approach has been adopted by the new cTnI assay from Abbott Diagnostics. The aim of our study was to investigate whether this approach affects the clinical performance of cTnI assays.
Methods: Cardiac troponin concentrations were measured in a random sample of patients with unstable coronary artery disease included in the GUSTO IV trial (n = 696) by the AccuTnI (Beckman-Coulter Diagnostics), Architect cTnI (Abbott Diagnostics), Immulite 2500 cTnI (Diagnostics Products Corporation), and Elecsys 2010 cTnT (Roche Diagnostics) assays and related to the 1-year mortality. The primary cutoff concentrations were based on the 99th percentile upper reference limits and an imprecision (CV) ≤10%.
Results: The sensitivities of the AccuTnI and Architect cTnI assays in identifying patients who died within 1 year were equal and were significantly higher (P <0.05) than those of the Immulite 2500 cTnI and the Elecsys cTnT assays. The concordance between the AccuTnI and Architect cTnI assays was 97%, but concordances between the Architect cTnI and the Elecsys cTnT assays were 89%–92% with more at-risk patients (P <0.01 to P <0.001) identified by the Architect cTnI assay.
Conclusions: The Architect cTnI assay has clinical performance similar to that of the AccuTnI, probably as a result of the inclusion of a monoclonal antibody against troponin I epitope 41–49 in the assay.
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Affiliation(s)
- Stefan James
- Department of Medical Sciences, Cardiology, Department of Medical Sciences, Clinical Chemistry, Uppsala University, Uppsala, Sweden
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Alberto P, Francesca I, Chiara S, Ranuccio N. Acute Coronary Syndromes: From the Laboratory Markers to the Coronary Vessels. Biomark Insights 2006. [DOI: 10.1177/117727190600100013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Summary A number of “interesting” risk markers have been proposed as providing prognostic informations in acute coronary syndromes (ACS). Elevation in plasma inflammatory and necrosis biomarkers have been related to future cardiovascular events in individuals with or without prior myocardial infarction. Recently BNP and pro-BNP are entered in clinical practice to recognize patients at major risk, providing incremental information respect to the traditional markers. Together with these laboratory indexes, a few of promising laboratory markers once easily available, could become usefull in identification of patients at high risk. Several studies evaluated many markers of platelet aggregation, endothelial dysfunction and vascular thrombosis, but it is not yet clear whether each of the proposed markers may provide incremental predictive information. We describe, following the most studies reported in literature, the laboratory markers with potential clinical and prognostic power that could early help physicians in the identification of patients with impaired coronary disease and more narrowed coronary arteries.
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Affiliation(s)
- Palazzuoli Alberto
- Department of Internal Medicine and Metabolic Diseases, Section of Cardiology, University of Siena, Le Scotte Hospital
| | - Iovine Francesca
- Department of Internal Medicine and Metabolic Diseases, Section of Cardiology, University of Siena, Le Scotte Hospital
| | - Scali Chiara
- Department of Internal Medicine and Metabolic Diseases, Section of Cardiology, University of Siena, Le Scotte Hospital
| | - Nuti Ranuccio
- Department of Internal Medicine and Metabolic Diseases, Section of Cardiology, University of Siena, Le Scotte Hospital
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Scholte op Reimer W, de Swart E, De Bacquer D, Pyörälä K, Keil U, Heidrich J, Deckers JW, Kotseva K, Wood D, Boersma E. Smoking behaviour in European patients with established coronary heart disease. Eur Heart J 2005; 27:35-41. [PMID: 16210309 DOI: 10.1093/eurheartj/ehi497] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AIMS Treatment guidelines for patients with established coronary disease emphasize the importance of smoking cessation. We aimed to study smoking behaviour in European patients, as well as trends in this behaviour over time. We further aimed to evaluate the relation between selected patient characteristics and smoking cessation. METHODS AND RESULTS We studied patients who were enrolled in the second European Action on Secondary Prevention through Intervention to Reduce Events (EUROASPIRE) survey, which was undertaken in 15 European countries during 1999-2000. Consecutive patients, < or =70 years were identified after coronary artery bypass grafting, percutaneous transluminal coronary angioplasty, admission for myocardial infarction, or admission for myocardial ischaemia. Patients were then interviewed, at a median of 1.5 years after the index event. During the interview, data were collected on a broad range of clinical characteristics, including smoking status, which was validated by breath carbon monoxide levels. The prevalence of smoking was compared with data from the first EUROASPIRE survey, which had a similar design, and was conducted during 1995-96. In EUROASPIRE II, 5551 patients attended the interview and 1172 (21%) were (persistent) smokers. No decrease in smoking prevalence was observed similar to the first survey (19%). The proportion of smokers was 39% in patients aged <50, 26% in patients aged 50-60, and 14% in patients aged > or =60. Men and women had similar prevalence. A verbal advice to give up smoking by a medical professional was given to 99% of the 2244 pre-event smokers, and 48% actually stopped. This proportion was relatively high in elderly patients > or =60 years (53%), patients with a university level of education (56%), and patients with a myocardial infarction as the index event (52%). The proportion of stopped smokers was low in patients <50 years (41%) and in patients with myocardial ischaemia as the index event (38%). CONCLUSION The prevalence of smoking in European patients with established coronary disease is too high: one out of each five patients smokes, despite a personal advice to stop. Thus, still there is a need for the development of effective smoking cessation programmes.
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Chang WC, Midodzi WK, Westerhout CM, Boersma E, Cooper J, Barnathan ES, Simoons ML, Wallentin L, Ohman EM, Armstrong PW. Are international differences in the outcomes of acute coronary syndromes apparent or real? A multilevel analysis. J Epidemiol Community Health 2005; 59:427-33. [PMID: 15831694 PMCID: PMC1733086 DOI: 10.1136/jech.2004.024984] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
STUDY OBJECTIVE International variation in the outcomes of patients with acute coronary syndromes (ACS) has been well reported. The relative contributions of patient, hospital, and country level factors on clinical outcomes, however, remain unclear, and thus, was the objective of this study. DESIGN Multilevel logistic regression models were developed for death/(re)infarction (MI) at 30 days and death in one year, with patients (1st level) nested in hospitals (2nd level) and hospitals in countries (3rd level). SETTINGS The GUSTO IV ACS clinical trial was carried out at 458 hospital sites in 24 countries. PATIENTS 7800 non-ST segment elevation (NSTE) ACS patients. MAIN RESULTS There were substantial variations among countries in the processes and outcomes of care at 30 days, ranging from 5.4% to 50.0% for percutaneous coronary intervention, 4.3% to 21.2% for coronary artery bypass graft surgery, 5.0% to 13.9% for 30 day death/(re)MI, and 4.9% to 14.8% for one year mortality. However, the residual inter-country variations in 30 day death/(re)MI and one year mortality became non-significant and nearly disappeared (p > 0.500 for both) after adjusting for key baseline patient characteristics and hospital factors, which became significant (p < 0.01 for both). Patient level factors accounted for 96%-99% of total variation in these end points, leaving the remaining 1% and 4% of variance attributable to hospital level factors. CONCLUSION The international differences in clinical outcomes in this study of NSTE ACS are primarily accounted for by the patient level factors, with hospital level factors playing a minor part, and the country level factors a negligible one. These findings have significant policy and research implications involving international collaboration and comparisons.
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Schrör K. Hämostaseologie. Internist (Berl) 2005; 46:873-8, 880-1. [PMID: 15988604 DOI: 10.1007/s00108-005-1452-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The design and development of new antithrombotics, i.e. anticoagulants and antiplatelet drugs, is a rapidly expanding area of pharmacological research. New anticoagulants, i.e. inhibitors of thrombin formation and action have been developed and some of them are already in clinical use. This includes hirudin and its analogs, such as bivalirudin. In contrast to heparins, these compounds as well as low-molecular weight inhibitors of thrombin and factor Xa directly inhibit thrombus-associated generation and action of thrombin, eventually associated with a reduced bleeding tendency. Orally active compounds are available and currently subject of clinical trials. It appears possible that these new agents may replace cumarins as oral anticoagulants, specifically in long-term use, in the near future. The introduction of clopidogrel marks another important development in the field of antiplatelet drugs. Synergistic actions of this compound with acetylsalicylic acid and GP-IIb/IIIa-antagonists because of their different mode of action enhance the antithrombotic potential considerably and have been clinically confirmed. Despite of this optimistic outlook, the individual risk/benefit ratio of these new drugs, in particular in the area of anticoagulants, still needs to be defined.
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Affiliation(s)
- K Schrör
- Institut für Pharmakologie und Klinische Pharmakologie, Universitätsklinikum Düsseldorf, Germany.
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Bodí V, Sanchis J, Llàcer A, Fácila L, Núñez J, Pellicer M, Bertomeu V, Ruiz V, Chorro FJ. Multimarker risk strategy for predicting 1-month and 1-year major events in non-ST-elevation acute coronary syndromes. Am Heart J 2005; 149:268-74. [PMID: 15846264 DOI: 10.1016/j.ahj.2004.05.053] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND The aim of this study was to define the utility of the combined measurement of troponin I, myoglobin, C-reactive protein, fibrinogen, and homocysteine to predict risk in non-ST elevation acute coronary syndromes. METHODS Troponin I, myoglobin, high-sensitivity C-reactive protein, fibrinogen, and homocysteine were measured in 557 consecutive patients admitted to our institution for non-ST elevation acute coronary syndrome. The risk for major events (death or nonfatal myocardial infarction) at first month and at first year follow-up was analyzed. RESULTS In a multivariate model adjusting for baseline characteristics and electrocardiographic changes, the only biomarkers related to major events at first month were C-reactive protein (P = .007) and myoglobin (P = .02), and at first year troponin I (P = .02), C-reactive protein (P = .03), and homocysteine (P = .04). The rate of major events depending on the number (0-5) of elevated biomarkers were at first month: 4.1%, 3.7%, 5.7%, 6.1%, 6.5%, and 30.8% (P < .0001), and at first year: 8.2%, 11.1%, 12.3%, 16.2%, 23.7%, and 50% (P < .0001). A simple score including the number of elevated biomarkers showed an adjusted risk of major events of 1.6 [1.3-1.9] at first month and of 1.4 [1.2-1.7] at first year. CONCLUSIONS Markers of myocardial damage, inflammation, and homocysteine analyzed separately provide prognostic information. The number of elevated biomarkers is an independent risk predictor of major events.
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Affiliation(s)
- Vicent Bodí
- Servei de Cardiología, Hospital Clínic i Universitari, Universitat de València, València, Spain.
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Lansky AJ, Hochman JS, Ward PA, Mintz GS, Fabunmi R, Berger PB, New G, Grines CL, Pietras CG, Kern MJ, Ferrell M, Leon MB, Mehran R, White C, Mieres JH, Moses JW, Stone GW, Jacobs AK. Percutaneous coronary intervention and adjunctive pharmacotherapy in women: a statement for healthcare professionals from the American Heart Association. Circulation 2005; 111:940-53. [PMID: 15687113 DOI: 10.1161/01.cir.0000155337.50423.c9] [Citation(s) in RCA: 191] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
More than 1.2 million percutaneous coronary interventions are performed annually in the United States, with only an estimated 33% performed in women, despite the established benefits of percutaneous coronary intervention and adjunctive pharmacotherapy in reducing fatal and nonfatal ischemic complications in acute myocardial infarction and high-risk acute coronary syndromes. This statement reviews sex-specific data on the safety and efficacy of contemporary interventional therapies in women.
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46
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Hawley DA. What's new in acute coronary syndrome? Nurs Clin North Am 2004; 39:815-28. [PMID: 15561163 DOI: 10.1016/j.cnur.2004.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Patients presenting with ACS are an exciting challenge for health care providers. It has been documented that hospitals that carry out evidence-based therapies related to ACS have reduced mortality rates and better outcomes in general. The use of evidence-based practices has been shown to be more difficult in women, the elderly, and nonwhite patients. This suggests that there are opportunities to make more substantial improvements in outcomes for these groups of individuals. There is a tremendous need to use the knowledge gained in treating patients with ACS. Surprisingly little is known about why health care professionals do not institute therapies that are based on quality evidence. What could the quality outcomes such as mortality rate be for ACS persons if there were widespread use of the knowledge already in the literature regarding the care of ACS clients?
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Affiliation(s)
- Diane A Hawley
- Harris School of Nursing, Texas Christian University, Fort Worth, Texas, USA.
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47
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Marder VJ, Rosove MH, Minning DM. Foundation and sites of action of antithrombotic agents. Best Pract Res Clin Haematol 2004; 17:3-22. [PMID: 15171955 DOI: 10.1016/j.beha.2004.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thromboembolic disorders are a major cause of morbidity and mortality. As knowledge of the complex interactions between the vessel wall, platelets and coagulation and fibrinolytic enzyme systems increases, new avenues for more effective and safer therapies become evident. In this review, we discuss mechanisms of hemostasis in relation to antithrombotic agents and results of clinical trials using these drugs.
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Affiliation(s)
- Victor J Marder
- Vascular Medicine Program, Los Angeles Orthopedic Hospital, and Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, CA, USA.
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James SK, Siegbahn A, Armstrong P, Barnathan E, Califf R, Simoons ML, Wallentin L. Activation of the inflammation, coagulation, and fibrinolysis systems, without influence of abciximab infusion in patients with non-ST-elevation acute coronary syndromes treated with dalteparin: a GUSTO IV substudy. Am Heart J 2004; 147:267-74. [PMID: 14760324 DOI: 10.1016/j.ahj.2003.09.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND In acute coronary syndromes, the inflammation and the coagulation systems are activated, implying an impaired outcome. In addition to platelet inhibition, recent evidence suggests that the glycoprotein IIb/IIIa receptor inhibitor abciximab attenuates inflammation and coagulation activity. METHODS The Swedish Global Utilization of Strategies To open Occluded arteries-IV (GUSTO-IV) substudy included 404 patients with non-ST-elevation acute coronary syndromes. In addition to aspirin and dalteparin, all patients were randomized to receive abciximab infusion for 24 hours or 48 hours or corresponding placebo without early coronary revascularization. Plasma samples were obtained at baseline and 24, 48, and 72 hours. RESULTS The median levels of the coagulation markers thrombin/antithrombin complex and soluble fibrin increased significantly from 3.1 to 3.7 ug/L (baseline to peak; P <.001) and from 20 to 23 nmol/L (P <.001), respectively. The fibrinolysis marker, tissue plasminogen-activator, also increased its median levels, from 11.7 to 17.5 ug/L (P <.001), whereas the median level of plasminogen-activator-inhibitor was unchanged. The inflammatory markers interleukin-6, C-reactive protein, and fibrinogen also increased their median levels (5.4-7.8 ng/L, P <.001; 4.4-8.7 mg/L, P <.001; 3.3-3.9 g/L, P <.001). However, there were no differences in median levels or in changes of median levels of any marker at any point between the placebo group and any of the abciximab groups. CONCLUSIONS In non-ST-elevation acute coronary syndrome, there was a simultaneous activation of the inflammation, coagulation, and fibrinolysis systems, despite aspirin and dalteparin treatment. Prolonged treatment with abciximab had no influence of the activation of these systems.
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Affiliation(s)
- Stefan K James
- Department of Medical Sciences, Cardiology, Thoraxcenter, Academic Hospital, Uppsala, Sweden.
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James S. Coagulation, inflammation and myocardial dysfunction in unstable coronary artery disease and the influence of glycoprotein IIb/IIIa inhibition and low molecular weight heparin. Ups J Med Sci 2004; 109:71-122. [PMID: 15259448 DOI: 10.3109/2000-1967-101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Patients with unstable coronary artery disease (CAD) have an increased risk of subsequent myocardial infarction and death. This study evaluated the safety and efficacy of treatment with glycoprotein IIb/IIIa inhibition in addition to aspirin, low molecular-weight heparin and its influence on coagulation and inflammation. Also, early and differentiated risk assessment utilising markers of inflammation, myocardial damage and dysfunction were evaluated. The Global Utilisation of Strategies To open Occluded arteries-IV (GUSTO-IV) trial randomised 7800 patients with unstable CAD to 24 or 48 hours infusion of abciximab or placebo in addition to routine treatment with aspirin and heparin or dalteparin. Baseline levels of creatinine, C-reactive protein (CRP), troponin T (TnT) and N-terminal pro-brain natriuretic peptide (NT-proBNP) were analysed. At selected sites, all patients received subcutaneous dalteparin (n=974), in stead of heparin infusion (n=6826). In a sub-population of dalteparin treated patients (n=404), serial measurements of markers of coagulation, fibrinolysis and inflammation were also performed. Addition of abciximab to dalteparin as the primary treatment of unstable CAD was not associated with any significant reduction in cardiac events but a doubled risk of bleedings. The combination of abciximab with dalteparin seemed as safe when used with heparin. Despite full dose dalteparin and aspirin there was a simultaneous activation of the inflammation, coagulation and fibrinolysis systems without any influence of the abciximab treatment. Elevated levels of CRP, TnT, and NT-proBNP and reduced creatinine clearance were independently related to short and long-term mortality. The best prediction of high and low risk was provided by a combination of NT-proBNP and creatinine clearance. Any detectable elevation of TnT and reduced creatinine clearance, but neither elevation of CRP nor NT-proBNP, were also independently associated to a raised risk of subsequent myocardial infarction.
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Affiliation(s)
- Stefan James
- Department of Medical Sciences, Cardiology, Uppsala University Hospital, Uppsala, Sweden.
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Goldschmidt-Clermont PJ. Loss of bone marrow-derived vascular progenitor cells leads to inflammation and atherosclerosis. Am Heart J 2003; 146:S5-12. [PMID: 14564300 DOI: 10.1016/j.ahj.2003.09.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Aging represents the most powerful risk for the development of atherosclerosis and atherosclerotic thromboembolic complications. Yet, the mechanism by which aging affects the arterial wall and its deterioration has remained essentially uncharacterized. FINDINGS Chronic injuries to the arterial wall contribute to the development of atherosclerosis. However, it is important to note that a complex repair system that involves both local and bone marrow-derived cells maintains arterial homeostasis and integrity. With this review, we explain how the age-dependent failure of the bone marrow to produce vascular progenitor cells responsible for such arterial repair--an inability that results from the impact of a lifetime of risk factors such as hyperlipidemia--drives atherosclerosis and its thromboembolic complications. As a consequence of such failure, the normal processes of arterial wall repair and rejuvenation are impaired. The disequilibrium that ensues between injury of the arterial wall and repair leads to atherosclerotic inflammation and consequent thromboembolic complications. CONCLUSION The bone marrow and derived progenitor cells represent key regulators of atherosclerosis, and progress in the prevention and treatment of atherosclerosis and its thromboembolic complications will need to take into account this new dimension for the disease process.
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