M
Marek Malik
Researcher at National Institutes of Health
Publications - 548
Citations - 63023
Marek Malik is an academic researcher from National Institutes of Health. The author has contributed to research in topics: QT interval & Myocardial infarction. The author has an hindex of 78, co-authored 535 publications receiving 58778 citations. Previous affiliations of Marek Malik include St. George's University & Imperial College London.
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Variability of heart rate correction methods for the QT interval.
TL;DR: Haloperidol caused a statistically significant mean QTc prolongation using the three correction methods, thus decreasing the possibility of over- or under-correction and the QTC intervals were less dependent on RR intervals using the subject-specific method.
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Sex differences in repolarization homogeneity and its circadian pattern.
TL;DR: In both women and men, repolarization irregularity was greatest during morning hours, and there were substantial sex differences in both global repolarized homogeneity and regional homogeneity.
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Prognostic value of heart rate variability after myocardial infarction. A comparison of different data-processing methods
TL;DR: Alternative, operator-independent methods for establishing HRV from continuous long-term ECG recordings of postmyocardial infarction patients seem to be as effective as previously reported methods which rely on operator-dependent data post-processing techniques.
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Comparison of formulae for heart rate correction of QT interval in exercise electrocardiograms.
TL;DR: The study shows that the practical meaning of QTc interval measurements depends on the correction formula used, and that the use of an ad‐hoc selected heart rate correction formula is highly inappropriate because it may bias the results in either direction.
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Comparative reproducibility of QT, QT peak, and T peak-T end intervals and dispersion in normal subjects, patients with myocardial infarction, and patients with hypertrophic cardiomyopathy.
TL;DR: The reliability of automatic measurement of QT, QTp, and TpTe intervals is high but the reproducibility of the repeated measurements ofQT,QTp and TtTe dispersion is comparatively low.