Key result
ECG criteria fail to correlate with actual left atrial enlargement on echocardiography.
Why the study?
The validity of the New York Heart Association electrocardiographic criteria for left atrial enlargement had previously been examined using M-mode echocardiography, prompting evaluation against left atrial dimension determined by two-dimensional echocardiography.
Observational (n=91)
Answers are grounded in this paper and cite their sources.
ECG criteria warrant caution for diagnosing left atrial enlargement alone; leaves open their utility pending contemporary validation.
In the past, M-mode echocardiography, the "gold standard" for determining left atrial dimension (LAD), has been used to examine the validity of the New York Heart Association criteria for left atrial enlargement (LAE).When the authors used two-dimensional echocardiography to determine LAD in 91 patients, they found no significant correlation between any of these criteria, either alone or together, and actual LAE.They propose that if the diagnosis of LAE is made using these criteria alone, that it be qualified at all times with the word "possible."
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Parlow et al. (1989) conducted an observational in Left atrial enlargement (LAE) (n=91). New York Heart Association electrocardiographic criteria for left atrial enlargement vs. Two-dimensional echocardiography was evaluated on Correlation with actual left atrial enlargement (LAE) determined by two-dimensional echocardiography. NYHA electrocardiographic criteria showed no significant correlation with actual left atrial enlargement measured by 2D echocardiography in 91 patients.
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