Document Detail


Evaluation of left ventricular ejection fraction in non-ST-segment elevation acute coronary syndromes and its relationship to treatment.
MedLine Citation:
PMID:  20362719     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: In-hospital assessment of left ventricular ejection fraction (LVEF) in non-ST-segment elevation acute coronary syndrome (NSTE-ACS) is emphasized in current practice guidelines. There are limited data regarding the evaluation of LVEF and clinical characteristics and in-hospital management in the "real world." METHODS: Registries including the Canadian Acute Coronary Syndrome (ACS) I and II, Global Registry of Acute Coronary Events (main GRACE/expanded GRACE(2)), and Canadian Registry of Acute Coronary Events (CANRACE) enrolled 13,703 NSTE-ACS patients across Canada between 1999 and 2008. Patients were stratified by in-hospital LVEF measurement, and LVEF was categorized as normal, mildly, or moderately to severely impaired. We compared clinical characteristics, cardiac procedures, and clinical outcomes across these groups. Multivariable logistic regression identified factors independently associated with the assessment of LVEF. RESULTS: Overall, 8,116 patients (59.2%) had LVEF measurement, and of the 7,667 patients with available LVEF data, 4,470 (58.3%) had normal, 1,916 (25%) mildly impaired, and 1,281 (16.7%) moderately to severely impaired LVEF. Patients with LVEF assessment more frequently (all P < .001) underwent cardiac catheterization, percutaneous coronary intervention or coronary bypass surgery, and had higher (both P < .001) rates of myocardial (re) infarction and heart failure. In-hospital reinfarction, higher Killip class, abnormal biomarker, hospital stay >10 days, and on-site cardiac catheterization facility were independently associated with LVEF assessment. Despite increasing LVEF assessment over time (P for trend < .001), 31.2% of patients in the most recent registry (2008) had no in-hospital LVEF assessment. CONCLUSIONS: In-hospital LVEF assessment is not performed in many NSTE-ACS patients. The LVEF assessment, associated with increased use of evidence-based therapies and invasive cardiac procedures, was obtained more frequently in patients with myocardial (re) infarction, heart failure on presentation, and prolonged hospital stay.
Authors:
Sean Jedrzkiewicz; Shaun G Goodman; Raymond T Yan; Francois R Grondin; Richard Gallo; Robert C Welsh; Kevin Lai; Thao Huynh; Andrew T Yan;
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American heart journal     Volume:  159     ISSN:  1097-6744     ISO Abbreviation:  Am. Heart J.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-04-05     Completed Date:  2010-05-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  605-11     Citation Subset:  AIM; IM    
Copyright Information:
Copyright 2010 Mosby, Inc. All rights reserved.
Affiliation:
Terrence Donnelly Heart Center, Division of Cardiology, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.
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MeSH Terms
Descriptor/Qualifier:
Acute Coronary Syndrome / physiopathology*,  therapy,  ultrasonography*
Aged
Electrocardiography
Female
Humans
Male
Middle Aged
Stroke Volume*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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