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T-wave inversion and diastolic dysfunction in patients with electrocardiographic left ventricular hypertrophy.
MedLine Citation:
PMID:  22819483     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: The aim of this study was to investigate if T-wave inversion (TWI) in the settings of electrocardiogram (ECG)-left ventricular hypertrophy (LVH) is associated with advanced diastolic dysfunction (DD) in subjects with preserved ejection fraction (EF). BACKGROUND: Animal studies suggested that an abnormal transmural repolarization sequence from endocardium to epicardium may contribute to DD. However, little is known about abnormal repolarization sequence and DD in humans. METHODS: We studied 231 patients with ECG-diagnosed LVH and with an EF of 50% or greater (measured within 6 months of the index ECG). T-wave inversion was assessed on leads I, aVL, V(4), V(5), or V(6). Diastolic dysfunction was defined based on echocardiographic estimation of the left atrial pressure. We used multiple logistic regression to estimate the odds ratio of DD comparing patients with TWI with those without TWI. RESULTS: The average age was 65.0 ± 14.2 years, and 61% were women. The mean EF was 61.8% ± 6.6%. Patients with TWIs were more likely to have coronary artery disease (P = .013) and diabetes (P = .007). There was a 5.6-fold increased odds of DD in patients with TWI compared with those without TWI in a model adjusting for sex, age, relative wall thickness, body mass index, hypertension, coronary artery disease, diabetes, hyperlipidemia, and smoking. When comparing different echocardiographic estimates of the left atrial pressure, patients with TWI displayed higher values for septal and lateral E/e', left atrial volume index, and right ventricular/right atrial peak systolic gradient (P < .01 for each parameter). CONCLUSIONS: T-wave inversion is associated with increased odds of DD in patients with ECG-LVH with preserved systolic function. The reversal of the normal sequence of repolarization manifested on the 12-lead ECG as TWI may be a factor to DD.
Authors:
Peter Ofman; James R Cook; Leenhapong Navaravong; Robert A Levine; Adelqui Peralta; J Michael Gaziano; Luc Djousse; Zelmira Curillova; Peter Hoffmeister; Kyle Smoot; Leng Jiang; Dennis A Tighe; Mathias L Stoenescu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-20
Journal Detail:
Title:  Journal of electrocardiology     Volume:  -     ISSN:  1532-8430     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Published by Elsevier Inc.
Affiliation:
Division of Cardiology, Baystate Medical Center and Tufts University School of Medicine, Springfield, MA, USA; Division of Cardiology, VA Boston Healthcare System and Harvard Medical School, Boston, MA, USA; Department of Medicine, Division of Aging, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
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