Abstract：
OBJECTIVES:To define clinical correlates of low voltage isolated to precordial leads on the surface electrocardiogram (ECG). INTRODUCTION:Low voltage (V) on the ECG is defined as QRS V<5mm in all limb leads and <10mm in all precordial leads. The diagnostic use of ECGs with low voltage isolated to the precordial leads with normal limb lead voltages is unclear. METHODS:Twelve-lead ECGs with QRS V>5mm in one or more limb leads and <10mm in all precordial leads were collected. Associated clinical conditions were determined from clinical data, echocardiograms, and chest radiographs. RESULTS:Low precordial voltage was found in 256 of 150,000 ECGs (~0.2%). 50.4% of patients had discordant ECGs that correlated with classic etiologies, with a higher incidence of LV dilation in those with classic etiologies than those without. CONCLUSION:Low precordial voltage is associated with classic etiologies and LV dilation.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
Kim DH,Verdino RJdoi
10.1016/j.jelectrocard.2017.04.016subject
Has Abstractpub_date
2017-01-01 00:00:00pages
551-554issue
5eissn
0022-0736issn
1532-8430pii
S0022-0736(17)30119-Xjournal_volume
50pub_type
杂志文章abstract：:Isolated T wave alternans (TWA) could be consistently induced in 13 dogs by infusion of an acid dextrose solution (ACD) and in nine with a 2% EDTA disodium solution. To study the factors concerned in evoking TWA, serial determinations of total and ionized serum calcium (ICa), Mg, K, pH, pCO2 and pO2 were performed. Ar...
journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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