Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative Study

Objective. To determine factors associated with single antiplatelet (SAP) or dual antiplatelet (DAP) therapy and anticoagulants (AC) use in hospital and after discharge among patients with acute coronary syndrome (ACS). Methods. We evaluated 5,294 ACS patients in the Intermountain Heart Collaborativ...

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Main Authors: Stacey Knight, Winslow Klaskala, Scott C. Woller, Benjamin D. Horne, T. Jared Bunch, Viet T. Le, Roger M. Mills, Joseph B. Muhlestein
Format: Article
Language:English
Published: Wiley 2015-01-01
Series:Cardiology Research and Practice
Online Access:http://dx.doi.org/10.1155/2015/270508
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author Stacey Knight
Winslow Klaskala
Scott C. Woller
Benjamin D. Horne
T. Jared Bunch
Viet T. Le
Roger M. Mills
Joseph B. Muhlestein
author_facet Stacey Knight
Winslow Klaskala
Scott C. Woller
Benjamin D. Horne
T. Jared Bunch
Viet T. Le
Roger M. Mills
Joseph B. Muhlestein
author_sort Stacey Knight
collection DOAJ
description Objective. To determine factors associated with single antiplatelet (SAP) or dual antiplatelet (DAP) therapy and anticoagulants (AC) use in hospital and after discharge among patients with acute coronary syndrome (ACS). Methods. We evaluated 5,294 ACS patients in the Intermountain Heart Collaborative Study from 2004 to 2009. Multivariable logistic regressions were used to determine predictors of AC or AP use. Results. In hospital, 99% received an AC, 79% DAP, and 19% SAP; 78% had DAP + AC. Coronary stents were the strongest predictors of DAP use in hospital compared to SAP (P<0.001). After discharge, 77% received DAP, 20% SAP, and 9% AC; 5% had DAP + AC. DAP compared to SAP was less likely for patients on AC (odds ratio [OR] = 0.30, P<0.0001) after discharge. Placement of a stent increased the likelihood of DAP (bare metal: OR = 54.8, P<0.0001; drug eluting: OR = 59.4, P<0.0001). 923 had atrial fibrillation and 337 had a history of venous thromboembolism; these patients had increased use of AC (29% and 40%, resp.). Conclusion. While in-hospital use of AC was nearly universal, postdischarge AC use was rare. Concern for providing the best antithrombotic therapy, while maintaining an acceptable bleeding risk, may explain the selection decisions.
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spelling doaj-art-887b45bf01804800b1e409c8edf850682025-02-03T05:51:09ZengWileyCardiology Research and Practice2090-80162090-05972015-01-01201510.1155/2015/270508270508Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative StudyStacey Knight0Winslow Klaskala1Scott C. Woller2Benjamin D. Horne3T. Jared Bunch4Viet T. Le5Roger M. Mills6Joseph B. Muhlestein7Intermountain Medical Center, Intermountain Heart Institute, 5121 S. Cottonwood Street, Murray, UT 84107, USAJanssen Research and Development, Raritan, NJ 08869, USAIntermountain Medical Center, Intermountain Heart Institute, 5121 S. Cottonwood Street, Murray, UT 84107, USAIntermountain Medical Center, Intermountain Heart Institute, 5121 S. Cottonwood Street, Murray, UT 84107, USAIntermountain Medical Center, Intermountain Heart Institute, 5121 S. Cottonwood Street, Murray, UT 84107, USAIntermountain Medical Center, Intermountain Heart Institute, 5121 S. Cottonwood Street, Murray, UT 84107, USAJanssen Research and Development, Raritan, NJ 08869, USAIntermountain Medical Center, Intermountain Heart Institute, 5121 S. Cottonwood Street, Murray, UT 84107, USAObjective. To determine factors associated with single antiplatelet (SAP) or dual antiplatelet (DAP) therapy and anticoagulants (AC) use in hospital and after discharge among patients with acute coronary syndrome (ACS). Methods. We evaluated 5,294 ACS patients in the Intermountain Heart Collaborative Study from 2004 to 2009. Multivariable logistic regressions were used to determine predictors of AC or AP use. Results. In hospital, 99% received an AC, 79% DAP, and 19% SAP; 78% had DAP + AC. Coronary stents were the strongest predictors of DAP use in hospital compared to SAP (P<0.001). After discharge, 77% received DAP, 20% SAP, and 9% AC; 5% had DAP + AC. DAP compared to SAP was less likely for patients on AC (odds ratio [OR] = 0.30, P<0.0001) after discharge. Placement of a stent increased the likelihood of DAP (bare metal: OR = 54.8, P<0.0001; drug eluting: OR = 59.4, P<0.0001). 923 had atrial fibrillation and 337 had a history of venous thromboembolism; these patients had increased use of AC (29% and 40%, resp.). Conclusion. While in-hospital use of AC was nearly universal, postdischarge AC use was rare. Concern for providing the best antithrombotic therapy, while maintaining an acceptable bleeding risk, may explain the selection decisions.http://dx.doi.org/10.1155/2015/270508
spellingShingle Stacey Knight
Winslow Klaskala
Scott C. Woller
Benjamin D. Horne
T. Jared Bunch
Viet T. Le
Roger M. Mills
Joseph B. Muhlestein
Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative Study
Cardiology Research and Practice
title Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative Study
title_full Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative Study
title_fullStr Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative Study
title_full_unstemmed Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative Study
title_short Antithrombotic Therapy in Patients with Acute Coronary Syndrome in the Intermountain Heart Collaborative Study
title_sort antithrombotic therapy in patients with acute coronary syndrome in the intermountain heart collaborative study
url http://dx.doi.org/10.1155/2015/270508
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