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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Circadian behavior of P-wave duration, P-wave area, and PR interval in healthy subjects.
TL;DR: This data indicates that the circadian variation of P‐wave characteristics and their dynamic adaptation to heart rate changes was not tested before and indicates the presence of high risk for atrial fibrillation.
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Estimation of the QT/RR hysteresis lag.
TL;DR: The process of QT interval adaptation to heart rate (HR) changes was evaluated by considering weighted averages of RR intervals to characterize the influence of previous cardiac cycles and showed that the QT adaptation to HR changes is highly individual and, consequently, any generalized approach may lead to inappropriate conclusions.
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Analysis of the cardiac rhythm preceding episodes of paroxysmal atrial fibrillation
Katerina Hnatkova,Johan E.P. Waktare,Francis Murgatroyd,Xiaohua Guo,Xie Baiyan,A. John Camm,Marek Malik +6 more
TL;DR: The mode of onset of atrial fibrillation is inconsistent, both across a population with PAF and within individuals, and has implications for understanding the mechanisms of atrium fibrilation onset in human beings and for the treatment of the disorder.
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Respiratory rate predicts outcome after acute myocardial infarction: a prospective cohort study
Petra Barthel,Roland Wensel,Axel Bauer,Axel Bauer,Alexander Müller,Petra Wolf,Kurt Ulm,Katharina M. Huster,Darrel P. Francis,Marek Malik,Georg Schmidt +10 more
TL;DR: The respiratory rate provides powerful prognostic information which is independent and complementary to that of existing risk assessment and should be considered a complementary variable for the assessment of risk after acute MI.
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QT dispersion and risk factors for sudden cardiac death in patients with hypertrophic cardiomyopathy
Gang Yi,Perry M. Elliott,William J. McKenna,K Prasad,Sanjay Sharma,Xiao Hua Guo,A. John Camm,Marek Malik +7 more
TL;DR: Patients with HC have increased QTd, which correlates with symptomatic status and might provide complementary clinical characterization of patients with HC but its relation to SCD remains uncertain.