| Use of P-wave-triggered, P-wave signal-averaged electrocardiogram to predict atrial fibrillation after coronary artery bypass surgery. | |
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MedLine Citation:
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PMID: 7732978 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Atrial fibrillation occurs commonly after coronary artery bypass surgery. However, despite numerous attempts at prediction, no accurate and generally accepted method exists to predict its occurrence. P-wave-triggered P-wave signal averaging was performed on 54 patients before coronary artery bypass surgery to evaluate the utility of this method to predict atrial fibrillation after coronary artery bypass surgery. After excluding six patients with unevaluable P-wave signal averages and three patients with postoperative arrhythmias other than atrial fibrillation, the P-wave signal averages of 45 patients were analyzed. Sixteen patients had postoperative atrial fibrillation and 29 did not. The mean P-wave duration of the filtered, signal-averaged P wave was 163 +/- 19 msec in the 16 patients with atrial fibrillation and 144 +/- 16 msec in the 29 patients without (p < 0.005). Left atrial enlargement on the surface electrocardiogram (ECG) was the only other statistically significant variable that correlated weakly with the onset of postoperative atrial fibrillation (p = 0.04). Other clinical variables such as P-wave duration in ECG lead II, left ventricular hypertrophy on ECG, age, sex, hypertension, and left ventricular ejection fraction were not significantly different between the two groups. With a cut point of 155 msec, chi-squared analysis revealed a p value of < 0.005, yielding a sensitivity of 69%, a specificity of 79%, a positive predictive value of 65%, and a negative predictive value of 82%. Signal-averaging of the P wave in patients before coronary artery bypass surgery provides a good predictor of postoperative atrial fibrillation. |
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Authors:
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M Klein; S J Evans; S Blumberg; L Cataldo; M M Bodenheimer |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: American heart journal Volume: 129 ISSN: 0002-8703 ISO Abbreviation: Am. Heart J. Publication Date: 1995 May |
Date Detail:
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Created Date: 1995-05-31 Completed Date: 1995-05-31 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0370465 Medline TA: Am Heart J Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 895-901 Citation Subset: AIM; IM |
Affiliation:
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Division of Cardiology, Harris Chasanoff Heart Institute, New Hyde Park, NY 11042, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Atrial Fibrillation / diagnosis* Chi-Square Distribution Coronary Artery Bypass* Electrocardiography / methods*, statistics & numerical data Female Humans Male Middle Aged Postoperative Complications / diagnosis* Prognosis Prospective Studies ROC Curve Risk Factors Sensitivity and Specificity Signal Processing, Computer-Assisted* Time Factors |
| Comments/Corrections | |
Comment In:
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Am Heart J. 1996 Jun;131(6):1238
[PMID:
8644616
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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