| Determination of the ability of high-frequency ECG to estimate left ventricular mass in humans, determined by magnetic resonance imaging. | |
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MedLine Citation:
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PMID: 16640510 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Previous studies have shown a significantly higher correlation between left ventricular mass index (LVMi) and high-frequency QRS components (HF-QRS) than between LVMi and QRS amplitudes in the standard frequency range in rabbits. The purpose of the present study was to compare ECG measurements from standard and high-frequency ranges with left ventricular mass (LVM) and LVMi determined by magnetic resonance imaging in humans. METHODS: Sixty-two normal subjects were studied. Signal-averaged ECGs from the 12 standard leads were analysed in the standard frequency range (0.05-150 Hz), in the middle (25-100 Hz) and high end (50-150 Hz) of the standard frequency range and in the 150-250 Hz range. Root-mean square (RMS) values from the HF-QRS and QRS amplitude measurements from the standard ECGs were compared with LVM and LVMi. RESULTS: The correlations between LVMi and HF-QRS were similar to those between LVMi and standard ECG. When regarding LVM, however, the correlations found in the standard ECG were higher than those found in HF-QRS. CONCLUSIONS: Contrary to previous results in animals, we found in humans no better correlation between HF-QRS and LVM/LVMi than between standard ECG and LVM/LVMi. |
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Authors:
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Elin Trägårdh; Håkan Arheden; Jonas Pettersson; Galen S Wagner; Olle Pahlm |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Clinical physiology and functional imaging Volume: 26 ISSN: 1475-0961 ISO Abbreviation: Clin Physiol Funct Imaging Publication Date: 2006 May |
Date Detail:
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Created Date: 2006-04-27 Completed Date: 2006-07-13 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 101137604 Medline TA: Clin Physiol Funct Imaging Country: England |
Other Details:
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Languages: eng Pagination: 157-62 Citation Subset: IM |
Affiliation:
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Department of Clinical Physiology, Lund University, Lund, Sweden. elin.tragardh@med.lu.se |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Electrocardiography / methods* Female Humans Hypertrophy, Left Ventricular / diagnosis* Image Interpretation, Computer-Assisted Magnetic Resonance Imaging, Cine* Male Middle Aged Signal Processing, Computer-Assisted Statistics, Nonparametric |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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