Results 51 to 60 of about 477,196 (292)

P wave peak time and P wave dispersion in severe COVID-19 infection.

European review for medical and pharmacological sciences, 2022
With this study, we aimed at evaluating the association between electrocardiographic P wave indices and the severity of COVID-19 infection indicated as intensive care unit (ICU) admission.We included 247 patients who were hospitalized with a diagnosis of COVID-19 infection and underwent 12 lead standard Electrocardiography (ECG). P wave indices, P wave
Turker Duyuler, P., Duyuler, S., Demirtaş, B., Çiçekçioğlu, H., Çayhan, V.   +4 more
openaire   +2 more sources

P Wave Dispersion in Children with Breath-holding Spells

Türk Nöroloji Dergisi, 2016
Objective: A breath-holding spell (BHS) is a clinical feature frequently seen in infancy and early childhood and generally bringing children to pediatric cardiology outpatient clinics with the suspicion of cardiac disease.
Tahsin Gider, Bülent Koca, Mustafa Çalık, Ali Yıldırım, Savaş Demirpençe   +4 more
doaj   +1 more source

Increased P‐Wave Duration and P‐Wave Dispersion in Patients with Aortic Stenosis [PDF]

Annals of Noninvasive Electrocardiology, 2003
Background: P‐wave dispersion (PWD), defined as the difference between the maximum and minimum P‐wave duration, has been proposed as being useful for the prediction of paroxysmal atrial fibrillation (AF). AF is the most common arrhythmia and an important prognostic indicator for clinical deterioration in patients with aortic stenosis (AS).
Hasan, Turhan, Ertan, Yetkin, Ramazan, Atak, Tayfun, Altinok, Kubilay, Senen, Mehmet, Ileri, Hatice, Sasmaz, Sengul, Cehreli, Emine, Kutuk   +8 more
openaire   +2 more sources

Does pulmonary endarterectomy have arrhythmia prevention effect?

International Journal of the Cardiovascular Academy, 2018
Background: The aim of the present study was therefore to evaluate the evolution of electrocardiography (ECG) markers indicator of morbidity and mortality after pulmonary endarterectomy (PEA).
Tarik Kivrak, Bedrettin Yıldızeli, Bülent Mutlu   +2 more
doaj   +1 more source

Wave Dispersion Behavior in Quasi-Solid State Concrete Hydration

Sensors, 2023
This paper aims to investigate wave dispersion behavior in the quasi-solid state of concrete to better understand microstructure hydration interactions. The quasi-solid state refers to the consistency of the mixture between the initial liquid–solid stage
Yin Chao Wu, Sanggoo Kang, Yeongseok Jeong, Dafnik Saril Kumar David, Suyun Ham   +4 more
doaj   +1 more source

P-wave dispersion and attenuation due to scattering by aligned fluid saturated fractures with finite thickness: theory and experiment

Geophysical Journal International, 2018
Junxin Guo,1,2 Da Shuai,3 Jianxin Wei,3 Pinbo Ding3 and Boris Gurevich2,4 1Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen 518055, China 2WA School of Mines: Minerals, Energy and Chemical Engineering ...
Junxin Guo, D. Shuai, Jianxin Wei, P. Ding, B. Gurevich   +4 more
semanticscholar   +1 more source

P‐Wave Duration and Dispersion in Obese Subjects [PDF]

Annals of Noninvasive Electrocardiology, 2008
Background: Although previous studies have documented a variety of electrocardiogram (ECG) abnormalities in obesity, P‐wave alterations, which represent an increased risk for atrial arrhythmia, have not been studied very well in these patients. The aim of the present study was to evaluate P‐wave duration and P dispersion (Pd) in obese subjects, and to
Feridun, Kosar, Yüksel, Aksoy, Fahri, Ari, Lezzan, Keskin, Ibrahim, Sahin   +4 more
openaire   +2 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

FEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source