title: Predictors of early discontinuation of evidence-based medicine after acute coronary syndrome.
abstract: Use of evidence-based medicine (EBM) improves outcomes after acute coronary syndromes (ACS), yet patients often discontinue prescribed therapies after discharge. Although such discontinuation is well documented, patients' reasons for medication discontinuation have not been reported. MAINTAIN is a longitudinal follow-up registry of CRUSADE/ACTION, which enrolled patients during an ACS hospitalization from January 2006 to September 2007. All discharge medications were obtained from hospital charts. Patients were interviewed by telephone 3 months after discharge to determine if EBM classes prescribed at discharge were continued (aspirin, clopidogrel, beta blockers, angiotensin-converting enzyme inhibitors/angiotensin receptor blockers, and lipid-lowering medications). If discontinuation occurred, patients were asked if it was with provider knowledge/input or not (self-discontinuation). A multivariable logistic regression model was performed to identify factors associated with self-discontinuation of prescribed EBM. Of the 1,077 patients interviewed, 1,006 (93.4%) were discharged on aspirin, 816 (75.8%) on clopidogrel, 982 (91.2%) on beta blockers, 745 (69.2%) on angiotensin-converting enzyme inhibitors/angiotensin receptor blockers, and 968 (89.9%) on lipid-lowering medications. At 3-month follow-up, 304 patients (28.2%) had discontinued > or =1 of these prescribed EBM classes. Although many reported provider involvement, most discontinuation (61.5%) was self-determined. Factors independently associated with self-discontinuation were no pharmacy coinsurance, increasing number of medications, not using reminder tools (e.g., pillbox), lower education, and dialysis. In conclusion, 1/3 of patients with ACS discontinue > or =1 of their prescribed EBMs within 3 months of hospital discharge, and most of this discontinuation is without provider involvement. Patient education, better prescription drug coverage, and reminder strategies may improve use of EBMs at 3 months after discharge from ACS admission.
authors: Division of Cardiology and Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina, USA. mello004@mc.duke.edu
authors: Chiara
authors: C
authors: Melloni
authors: Karen P
authors: KP
authors: Alexander
authors: Fang-Shu
authors: FS
authors: Ou
authors: Nancy M Allen
authors: NM
authors: LaPointe
authors: Matthew T
authors: MT
authors: Roe
authors: L Kristin
authors: LK
authors: Newby
authors: Khaula
authors: K
authors: Baloch
authors: P Michael
authors: PM
authors: Ho
authors: John S
authors: JS
authors: Rumsfeld
authors: Eric D
authors: ED
authors: Peterson
mesh_terms: D054058:Acute Coronary Syndrome / Q000188:drug therapy*; D000368:Aged; D000959:Antihypertensive Agents / Q000627:therapeutic use; D019317:Evidence-Based Medicine / Q000706:statistics & numerical data* / Q000639:trends; D005260:Female; D006801:Humans; D000960:Hypolipidemic Agents / Q000627:therapeutic use; D016015:Logistic Models; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D010349:Patient Compliance; D010975:Platelet Aggregation Inhibitors / Q000627:therapeutic use; D011446:Prospective Studies; D012307:Risk Factors; D013997:Time Factors; D014481:United States
chemical_list: D000959:Antihypertensive Agents; D000960:Hypolipidemic Agents; D010975:Platelet Aggregation Inhibitors