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Quantitative Evaluation of the Relationship between T-Wave-Based Features and Serum Potassium Level in Real-World Clinical Practice

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dc.contributor.authorYoon, D-
dc.contributor.authorLim, HS-
dc.contributor.authorJeong, JC-
dc.contributor.authorKim, TY-
dc.contributor.authorChoi, JG-
dc.contributor.authorJang, JH-
dc.contributor.authorJeong, E-
dc.contributor.authorPark, CM-
dc.date.accessioned2019-11-13T00:24:17Z-
dc.date.available2019-11-13T00:24:17Z-
dc.date.issued2018-
dc.identifier.issn2314-6133-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/17450-
dc.description.abstractBACKGROUND: Proper management of hyperkalemia that leads to fatal cardiac arrhythmia has become more important because of the increased prevalence of hyperkalemia-prone diseases. Although T-wave changes in hyperkalemia are well known, their usefulness is debatable. We evaluated how well T-wave-based features of electrocardiograms (ECGs) are correlated with estimated serum potassium levels using ECG data from real-world clinical practice.
METHODS: We collected ECGs from a local ECG repository (MUSE) from 1994 to 2017 and extracted the ECG waveforms. Of about 1 million reports, 124,238 were conducted within 5 minutes before or after blood collection for serum potassium estimation. We randomly selected 500 ECGs and two evaluators measured the amplitude (T-amp) and right slope of the T-wave (T-right slope) on five lead waveforms (V3, V4, V5, V6, and II). Linear correlations of T-amp, T-right slope, and their normalized feature (T-norm) with serum potassium levels were evaluated using Pearson correlation coefficient analysis.
RESULTS: Pearson correlation coefficients for T-wave-based features with serum potassium between the two evaluators were 0.99 for T-amp and 0.97 for T-right slope. The coefficient for the association between T-amp, T-right slope, and T-norm, and serum potassium ranged from -0.22 to 0.02. In the normal ECG subgroup (normal ECG or otherwise normal ECG), there was no correlation between T-wave-based features and serum potassium level.
CONCLUSIONS: T-wave-based features were not correlated with serum potassium level, and their use in real clinical practice is currently limited.
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dc.language.isoen-
dc.subject.MESHArrhythmias, Cardiac-
dc.subject.MESHElectrocardiography-
dc.subject.MESHFemale-
dc.subject.MESHHumans-
dc.subject.MESHHyperkalemia-
dc.subject.MESHMale-
dc.subject.MESHMiddle Aged-
dc.subject.MESHPotassium-
dc.titleQuantitative Evaluation of the Relationship between T-Wave-Based Features and Serum Potassium Level in Real-World Clinical Practice-
dc.typeArticle-
dc.identifier.pmid30662906-
dc.identifier.urlhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312577/-
dc.contributor.affiliatedAuthor윤, 덕용-
dc.contributor.affiliatedAuthor임, 홍석-
dc.contributor.affiliatedAuthor정, 종철-
dc.type.localJournal Papers-
dc.identifier.doi10.1155/2018/3054316-
dc.citation.titleBioMed research international-
dc.citation.volume2018-
dc.citation.date2018-
dc.citation.startPage3054316-
dc.citation.endPage3054316-
dc.identifier.bibliographicCitationBioMed research international, 2018. : 3054316-3054316, 2018-
dc.identifier.eissn2314-6141-
dc.relation.journalidJ023146133-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Biomedical Informatics
Journal Papers > School of Medicine / Graduate School of Medicine > Cardiology
Journal Papers > School of Medicine / Graduate School of Medicine > Nephrology
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