PMID- 18805108 OWN - NLM STAT- MEDLINE DCOM- 20081104 LR - 20151119 IS - 0002-9149 (Print) IS - 0002-9149 (Linking) VI - 102 IP - 7 DP - 2008 Oct 1 TI - Comparison of anticoagulant and anti-inflammatory responses using enoxaparin versus unfractionated heparin for transesophageal echocardiography-guided cardioversion of atrial fibrillation. PG - 842-6 LID - 10.1016/j.amjcard.2008.05.025 [doi] AB - 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. FAU - Hoppensteadt, Debra AU - Hoppensteadt D AD - Loyola University, Chicago, Illinois, USA. FAU - Fareed, Jawed AU - Fareed J FAU - Klein, Allan L AU - Klein AL FAU - Jasper, Susan E AU - Jasper SE FAU - Apperson-Hansen, Carolyn AU - Apperson-Hansen C FAU - Lieber, Elizabeth A AU - Lieber EA FAU - Katz, William E AU - Katz WE FAU - Malouf, Joseph F AU - Malouf JF FAU - Stoddard, Marcus F AU - Stoddard MF FAU - Pape, Linda A AU - Pape LA CN - Assessment of Cardioversion Using Transesophageal Echocardiography (ACUTE) II Investigators LA - eng PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20080709 PL - United States TA - Am J Cardiol JT - The American journal of cardiology JID - 0207277 RN - 0 (Biomarkers) RN - 0 (Enoxaparin) RN - 0 (Fibrinolytic Agents) RN - 0 (Lipoproteins) RN - 0 (antithrombin III-protease complex) RN - 0 (lipoprotein-associated coagulation inhibitor) RN - 9000-94-6 (Antithrombin III) RN - 9005-49-6 (Heparin) RN - 9007-41-4 (C-Reactive Protein) RN - EC 3.4.- (Peptide Hydrolases) SB - IM MH - Antithrombin III MH - Atrial Fibrillation/*therapy MH - Biomarkers/blood MH - C-Reactive Protein/analysis MH - Echocardiography, Transesophageal MH - Electric Countershock/*methods MH - Enoxaparin/*therapeutic use MH - Feasibility Studies MH - Female MH - Fibrinolytic Agents/*therapeutic use MH - Heparin/*therapeutic use MH - Humans MH - Lipoproteins/blood MH - Male MH - Middle Aged MH - Partial Thromboplastin Time MH - Peptide Hydrolases/blood MH - Pilot Projects MH - Prospective Studies MH - Treatment Outcome MH - Ultrasonography, Interventional FIR - Stoddard, Marcus F IR - Stoddard MF FIR - Klein, Allan L IR - Klein AL FIR - Pape, Linda IR - Pape L FIR - Katz, William IR - Katz W FIR - Fein, Steven IR - Fein S FIR - Smith, Richard IR - Smith R FIR - Klein, Marc IR - Klein M FIR - Davidson, William IR - Davidson W FIR - Kakavas, Peter IR - Kakavas P FIR - Massey, Clara IR - Massey C FIR - Malouf, Joseph F IR - Malouf JF FIR - Sharifi, Mohsen IR - Sharifi M FIR - Zuck, Vincent IR - Zuck V FIR - Labovitz, Arthur IR - Labovitz A FIR - Small, Roy IR - Small R FIR - Alam, Moshin IR - Alam M FIR - Mankad, Sunil IR - Mankad S EDAT- 2008/09/23 09:00 MHDA- 2008/11/05 09:00 CRDT- 2008/09/23 09:00 PHST- 2008/03/24 00:00 [received] PHST- 2008/05/14 00:00 [revised] PHST- 2008/05/14 00:00 [accepted] PHST- 2008/09/23 09:00 [pubmed] PHST- 2008/11/05 09:00 [medline] PHST- 2008/09/23 09:00 [entrez] AID - S0002-9149(08)00907-7 [pii] AID - 10.1016/j.amjcard.2008.05.025 [doi] PST - ppublish SO - Am J Cardiol. 2008 Oct 1;102(7):842-6. doi: 10.1016/j.amjcard.2008.05.025. Epub 2008 Jul 9.