Comparison of Anticoagulant and Anti-Inflammatory Responses Using Enoxaparin Versus Unfractionated Heparin for Transesophageal Echocardiography-Guided Cardioversion of Atrial Fibrillation

The Assessment of Cardioversion Using Transesophageal Echocardiography (ACUTE) II study compared enoxaparin with unfractionated heparin (UFH) as bridging therapy in patients with atrial fibrillation >2 days in duration who underwent transesophageal echocardiography-guided cardioversion. In the pr...

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Veröffentlicht in:The American journal of cardiology 2008-10, Vol.102 (7), p.842-846
Hauptverfasser: Hoppensteadt, Debra, PhD, Fareed, Jawed, PhD, Klein, Allan L., MD, Jasper, Susan E., BSN, Apperson-Hansen, Carolyn, MStat, Lieber, Elizabeth A., BA, Katz, William E., MD, Malouf, Joseph F., MD, Stoddard, Marcus F., MD, Pape, Linda A., MD
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container_issue 7
container_start_page 842
container_title The American journal of cardiology
container_volume 102
creator Hoppensteadt, Debra, PhD
Fareed, Jawed, PhD
Klein, Allan L., MD
Jasper, Susan E., BSN
Apperson-Hansen, Carolyn, MStat
Lieber, Elizabeth A., BA
Katz, William E., MD
Malouf, Joseph F., MD
Stoddard, Marcus F., MD
Pape, Linda A., MD
description The Assessment of Cardioversion Using Transesophageal Echocardiography (ACUTE) II study compared enoxaparin with unfractionated heparin (UFH) as bridging therapy in patients with atrial fibrillation >2 days in duration who underwent transesophageal echocardiography-guided cardioversion. In the present study, the anticoagulant and anti-inflammatory effects of enoxaparin and UFH were compared at prespecified time points. In a randomized substudy of 155 patients from 17 clinical sites, the anticoagulant activity of enoxaparin (n = 76) was compared with that of UFH (n = 79). Blood samples were drawn at enrollment, on day 2, and on day 4 in the 2 groups. Blood samples were evaluated for anticoagulant activity by measuring the activated partial thromboplastin time, anti-Xa, anti-IIa, and tissue factor pathway inhibitor levels. In addition, levels of coagulation activation (by thrombin antithrombin complex) and inflammation (by highly sensitive C-reactive protein) were measured. The results of this substudy showed that the anti-Xa levels in the 2 groups increased on day 2. Similar increases in anti-Xa were observed on day 4. The anti-Xa levels and tissue factor pathway inhibitor levels were higher in the enoxaparin group compared with the UFH group on days 2 and 4. However, as expected, the anti-IIa levels in the UFH group were higher. In addition, markers of coagulation activation and inflammation were increased in patients with atrial fibrillation. Treatment with enoxaparin significantly decreased thrombin antithrombin complex levels compared with treatment with UFH. Highly sensitive C-reactive protein levels were also decreased after treatment in the 2 groups. In conclusion, the ACUTE II study showed that the use of enoxaparin for bridging therapy in patients with atrial fibrillation who underwent transesophageal echocardiography-guided cardioversion resulted in a more predictable and stronger anticoagulant response than that observed with UFH. Markers of inflammation were also decreased in the 2 groups.
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Vascular system ; Cardiovascular ; Cardiovascular system ; Echocardiography, Transesophageal ; Electric Countershock - methods ; Enoxaparin - therapeutic use ; Feasibility Studies ; Female ; Fibrinolytic Agents - therapeutic use ; Heart ; Heparin - therapeutic use ; Humans ; Investigative techniques, diagnostic techniques (general aspects) ; Lipoproteins - blood ; Male ; Medical sciences ; Middle Aged ; Partial Thromboplastin Time ; Peptide Hydrolases - blood ; Pharmacology. Drug treatments ; Pilot Projects ; Prospective Studies ; Proteins ; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. 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subjects Antithrombin III
Atrial Fibrillation - therapy
Biological and medical sciences
Biomarkers - blood
Bones, joints and connective tissue. Antiinflammatory agents
C-Reactive Protein - analysis
Cardiac arrhythmia
Cardiac dysrhythmias
Cardiology
Cardiology. Vascular system
Cardiovascular
Cardiovascular system
Echocardiography, Transesophageal
Electric Countershock - methods
Enoxaparin - therapeutic use
Feasibility Studies
Female
Fibrinolytic Agents - therapeutic use
Heart
Heparin - therapeutic use
Humans
Investigative techniques, diagnostic techniques (general aspects)
Lipoproteins - blood
Male
Medical sciences
Middle Aged
Partial Thromboplastin Time
Peptide Hydrolases - blood
Pharmacology. Drug treatments
Pilot Projects
Prospective Studies
Proteins
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Studies
Treatment Outcome
Ultrasonic investigative techniques
Ultrasonography, Interventional
title Comparison of Anticoagulant and Anti-Inflammatory Responses Using Enoxaparin Versus Unfractionated Heparin for Transesophageal Echocardiography-Guided Cardioversion of Atrial Fibrillation
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