Document Detail


Concurrent microvascular and infarct remodeling after successful reperfusion of ST-elevation acute myocardial infarction.
MedLine Citation:
PMID:  20484102     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
BACKGROUND: Connection between the course of microvascular and infarct remodeling processes over time after reperfused ST-elevation acute myocardial infarction has not been fully elucidated. The aim of this study is to investigate the association of temporal changes in hemodynamics of microcirculation in the infarcted territory and infarct size (IS) after primary percutaneous coronary intervention in patients with ST-elevation acute myocardial infarction. METHODS AND RESULTS: Thirty-five patients admitted with ST-elevation acute myocardial infarction undergoing primary percutaneous coronary intervention were enrolled in the study. Coronary flow reserve (CFR), index of microvascular resistance (IMR), and IS were assessed 2 days after primary percutaneous coronary intervention and at the 5-month follow-up. The predictors of the 5-month IS were the baseline values of IS (beta=0.6, P<0.001), IMR (beta=0.280, P=0.013), and CFR (beta=-0.276, P=0.017). There were significant correlations between relative change in IS and relative change in measures of microvascular function (IS and CFR [r=-0.51, P=0.002]); IS and IMR ([r=0.55, P=0.001]). In multivariate model, relative changes in IMR (beta=0.552, P=0.001) and CFR (beta=-0.511, P=0.002) were the only predictors of relative change in IS. In patients with an improvement in IMR >33%, the mean IS decreased from 32.3+/-16.9% to 19.3+/-14% (P=0.001) in the follow-up. Similarly, in patients with an improvement in CFR >41%, the mean IS significantly decreased from 29.9+/-20% to 15.8+/-12.4% (P=0.003). But in patients with an improvement in IMR and CFR, which were below than the mean values, IS did not significantly decrease during the follow-up. CONCLUSIONS: Improvement in microvascular function in the infarcted territory is associated with reduction in IS after reperfused ST-elevation acute myocardial infarction. This link suggests that further investigations are warranted to determine whether therapeutic protection of microvascular integrity results in augmentation of infarct healing.
Authors:
Murat Sezer; Emre K Aslanger; Arif O Cimen; Ebru Yormaz; Cuneyt Turkmen; Berrin Umman; Yilmaz Nisanci; Zehra Bugra; Kamil Adalet; Sabahattin Umman
Publication Detail:
Type:  Journal Article     Date:  2010-05-18
Journal Detail:
Title:  Circulation. Cardiovascular interventions     Volume:  3     ISSN:  1941-7632     ISO Abbreviation:  Circ Cardiovasc Interv     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101499602     Medline TA:  Circ Cardiovasc Interv     Country:  United States    
Other Details:
Languages:  eng     Pagination:  208-15     Citation Subset:  IM    
Affiliation:
Departments of Cardiology, Istanbul Faculty of Medicine, Istanbul University, Capa, Istanbul, Turkey. sezerm@istanbul.edu.tr
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

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


Previous Document:  Nitinol Stent Implantation Versus Balloon Angioplasty for Lesions in the Superficial Femoral Artery ...
Next Document:  Genetic and clinical predictors for breast cancer risk assessment and stratification among Chinese w...