Results 51 to 60 of about 596,019 (261)

Classification of electrocardiographic p-wave morphology [PDF]

Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2001
The atrial activity of the human heart is normally visible in the electrocardiogram as a P-wave. In patients with intermittent atrial fibrillation, a different P-wave morphology can sometimes be seen, indicating atrial conduction defects. The purpose of this study was to develop a method to discriminate between such P-waves and normal ones.
Jonas Carlson, Rolf Johansson 0001, S. Bertil Olsson   +2 more
openaire   +4 more sources

Theoretical study on propagation characteristics of P-wave in oblique joints rock mass

Baozha yu Chongji
In order to investigate the propagation characteristics of P-wave in nonlinear oblique joints rock mass, a comprehensive approach integrating theoretical analysis, comparative validation and numerical calculation was employed.
Gang HU, Baosen SONG, Honglu FEI, Shijie BAO, Jian GUO   +4 more
doaj   +1 more source

Non Destructive Evaluation of Glass-Epoxy Composite using Impact-echo Method [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2017
In this paper a new method for Nondestructive testing or Nondestructive evaluation is proposed for Glass-Epoxy composite. For this purpose, impact-echo is used to evaluate the properties of composite materials, detecting internal defects and thickness ...
MohammadMahdi Amiri, M. Tabatabaee Ghomi, Gh. Liaghat   +2 more
doaj  

Comprehensive Characterization of 98 Chinese Cases of Genetic Creutzfeldt‐Jakob Disease With T188K Mutation

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterize the demographic, clinical, and laboratory features of the Chinese patients of genetic Creutzfeldt‐Jakob disease with T188K variant (T188K‐gCJD), the most common subtype of genetic prion diseases (gPrDs) in China. Methods In this nationwide retrospective study, data from 98 genetically confirmed T188K‐gCJD patients ...
Chun‐Jie Li, Dong‐Lin Liang, Li‐Ping Gao, Wei‐Wei Zhang, Wei Zhou, A. Ruhan, Bing Xu, Run‐Dong Cao, Kang Xiao, Cao Chen, Qi Shi, Xiao‐Ping Dong   +11 more
wiley   +1 more source

Increased P Wave Dispersion and Maximum P Wave Duration after Hemodialysis [PDF]

Annals of Noninvasive Electrocardiology, 2004
Background: Atrial fibrillation is a frequent arrhythmia in patients undergoing hemodialysis. The consequences of hemodialysis on P wave durations and P wave dispersion have not been fully understood. The objective of this study was to study the effect of dialysis on P wave maximum (Pmax), P wave minimum (Pmin), and P wave dispersion (Pd). Methods: We
Oto, A, Demirtas, E, Isek, E, Kursaklioglu, H, Yavuz, I, Kose, S, Aytemir, K, Can, I, Amasyali, B, Tezcan, UK   +9 more
openaire   +3 more sources

P wave dispersion and maximum P wave duration are associated with renal outcomes in chronic kidney disease. [PDF]

PLoS ONE, 2014
P wave parameters measured by 12-lead electrocardiogram (ECG) are commonly used as a noninvasive tool to evaluate left atrial enlargement. This study was designed to assess whether P wave parameters were associated with renal outcomes in chronic kidney ...
Jiun-Chi Huang, Shu-Yi Wei, Szu-Chia Chen, Jer-Ming Chang, Chi-Chih Hung, Ho-Ming Su, Shang-Jyh Hwang, Hung-Chun Chen   +7 more
doaj   +1 more source

Unraveling 4‐Phenylbutyrate's Therapeutic Role in SLC6A1 Disorders: Pharmacochaperoning Over HDAC Inhibition

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Variants in SLC6A1, encoding the GABA transporter 1 (GAT‐1), cause epilepsy, autism spectrum disorder, and developmental delay via loss of GABA uptake, impaired trafficking, and ER retention. We previously found that 4‐Phenylbutyrate (PBA), an FDA‐approved drug, restores GABA uptake and reduces seizures in SLC6A1‐related disorders ...
Melissa B. DeLeeuw, Karishma Randhave, Ekta Anand, Ziang (Debbie) Song, Wangzhen Shen, Jing‐Qiong Kang   +5 more
wiley   +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

White Matter Microstructural Abnormalities in Neonatal Onset Genetic Epilepsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Recent evidence indicates that epilepsy is associated with abnormal white matter. If seizures alter white matter, then the impact upon network function, epileptogenesis, and cognition could be pronounced in neonates undergoing rapid developmental myelination. Neonates with epilepsy due to nonstructural genetic causes provide a unique
Amanda G. Sandoval Karamian, Tianjia Zhu, Hao Huang, Shavonne L. Massey, Mark P. Fitzgerald, Darshana Parikh, Arastoo Vossough, Ingo Helbig, Nicholas S. Abend   +8 more
wiley   +1 more source

Subclinical Optic Nerve Involvement in Radiologically Isolated Syndrome: Multimodal Detection and Diagnostic Impact

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives We aimed to determine the frequency of subclinical optic nerve (ON) lesions using MRI, optical coherence tomography (OCT), and visual evoked potentials (VEP) in radiologically isolated syndrome (RIS), and to assess their diagnostic and prognostic significance.
Christine Lebrun‐Frenay, Cassandre Landes‐Château, Lydiane Mondot, Mikael Cohen, Margherita Popolo, Jérôme de Seze, Bertrand Bourre, Françoise Durand‐Dubief, Olivier Casez, Orhun H. Kantarci, Aksel Siva, Stephanie Baillif, Darin T. Okuda, Letizia Leocani   +13 more
wiley   +1 more source