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You searched for: Subject "arrhythmia" Remove constraint Subject: "arrhythmia"
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1. From fabric to smart T-shirt: fine tuning an improved robust system to detect arrhythmia

Author:
Abdel Salam Malek; Ashraf Elnahrawy; Hamed Anwar; Mohamed Naeem
Source:
Textile research journal 2022 v.92 no.17-18 pp. 3204-3220
ISSN:
1746-7748
Subject:
arrhythmia,   etc   ; cotton fabric; electrocardiography; research;     Show all 4 Subjects
Abstract:
... Wearable electrocardiogram (ECG) systems should be comfortable, non-stigmatizing, and capable of producing high-quality data. Many different designs of wearable textile ECG systems have recently emerged. Some of them are not considered to be smart garments, whereas most of the others present only the electronic side of the system. Our research work introduces a comprehensive study for an improved ...
DOI:
10.1177/00405175211060887

2. Negative respiratory sinus arrhythmia (nRSA) in the MRI-scanner - a physiologic phenomenon observed during elevated anxiety in healthy persons

Author:
Beate Rassler; Andreas R. Schwerdtfeger; Gerhard Schwarz; Gert Pfurtscheller
Source:
Physiology & behavior 2022 v.245 pp. 113676
ISSN:
0031-9384
Subject:
arrhythmia,   etc   ; anxiety; behavior; brain stem; scanners;     Show all 5 Subjects
Abstract:
... Recently, we reported on a rare manifestation of respiratory sinus arrhythmia (RSA), namely the “switched-off” RSA (Rassler et al., 2018), also called negative RSA (nRSA). It was found in a minority of healthy persons during elevated fMRI-related anxiety characterized by slow spontaneous breathing and synchronous slow beat-to-beat interval (RRI) oscillations.From 23 healthy scanner naïve participa ...
DOI:
10.1016/j.physbeh.2021.113676

3. Three-dimensional electroanatomic mapping and radiofrequency catheter ablation of ventricular arrhythmia in a dog without structural heart disease

Author:
W. Hsue; T. Huh; A.R. Gelzer; C.M. Tschabrunn
Source:
Journal of veterinary cardiology 2022 v.39 pp. 14-21
ISSN:
1760-2734
Subject:
arrhythmia,   etc   ; catheters; dogs; electric potential difference; etiology; radio waves;     Show all 6 Subjects
Abstract:
... A 1.5-year-old, female-spayed mix-breed dog was presented with recurrent episodes of shaking and excessive panting attributed to drug-refractory ventricular arrhythmia (VA) characterized predominantly by incessant periods of ventricular bigeminy. The VA had a narrow QRS morphology, suggestive of an origin near the His bundle or fascicular system. Diagnostic evaluation found no structural heart dis ...
DOI:
10.1016/j.jvc.2021.11.001

4. Comparing performance of iterative and non-iterative algorithms on various feature schemes for arrhythmia analysis

Author:
Yatao Zhang; Zhenguo Ma; Jiarui Song; Xiaoming Kong; Ziyu Guo; Bin Jiang
Source:
Methods 2022 v.202 pp. 144-151
ISSN:
1046-2023
Subject:
arrhythmia,   etc   ; least squares; principal component analysis; support vector machines;     Show all 4 Subjects
Abstract:
... To evaluate the performance of the classic machine learning algorithms and the effectiveness of various features, the iterative algorithms (i.e., support vector machine (SVM), and least-squares SVM (LS-SVM)) and non-iterative algorithms (i.e., random forest (RF) and naive bayes (NB)) for six feature schemes were performed to classify the ECG recordings. The ECG recordings were initially filtered w ...
DOI:
10.1016/j.ymeth.2021.04.006

5. Reliability of water‐based medium‐expansion foam as a depopulation method for nursery pigs and cull sows

Author:
Andréia G. Arruda; Magnus R. Campler; Ting‐Yu Cheng; Brad Youngblood; Vittoria Capria; Justin Kieffer; Steven Moeller; Andrew S. Bowman
Source:
Transboundary and emerging diseases 2022 v.69 no.5 pp. e2719
ISSN:
1865-1674
Subject:
arrhythmia,   etc   ; animal diseases; consciousness; death; foams; mortality; poultry; swine;     Show all 8 Subjects
Abstract:
... Animal disease preparedness plans including depopulation guidelines are paramount to prevent the spread of emerging infectious diseases but difficult to implement for swine under field conditions. However, water‐based foam (WBF) is currently an approved and successfully deployed depopulation methodology in poultry. Therefore, the reliability of WBF as a depopulation method and the effectiveness an ...
DOI:
10.1111/tbed.14622

6. “We can never close the book and say, ‘We’ll continue next week’” – The rhythms of cooking and learning to cook in Swedish Home economics

Author:
Ingela Bohm
Source:
Food, culture, & society 2022 v.25 no.3 pp. 604-619
ISSN:
1751-7443
Subject:
arrhythmia,   etc   ; curriculum; family and consumer science; poverty; sustainable development;     Show all 5 Subjects
Abstract:
... The Swedish school subject Home Economics (HE) covers complex content to do with cooking and sustainable development, but is allocated relatively few hours. I draw on observations of HE lessons and interviews with teachers to show how experiences of time poverty can be conceptualized as arrhythmia in relation to the requirements of the curriculum, scheduling, cultural expectations, and the unpredi ...
DOI:
10.1080/15528014.2021.2002057

7. Automatic classification of electrocardiogram signals based on transfer learning and continuous wavelet transform

Author:
Xiaoming Sun; Pengfei Liu; Zhishuai He; Yang Han; Bochao Su
Source:
Ecological informatics 2022 v.69 pp. 101628
ISSN:
1574-9541
Subject:
arrhythmia,   etc   ; algorithms; data collection; electrocardiography; neural networks; songbirds; vocalization; wavelet;     Show all 8 Subjects
Abstract:
... Classification and subsequent diagnosis of cardiac arrhythmias is an important research topic in clinical practice. Confirmation of the type of arrhythmia at an early stage is critical for reducing the risk and occurrence of cardiovascular events. Nevertheless, diagnoses must be confirmed by a combination of specialist experience and electrocardiogram (ECG) examination, which can lead to delays in ...
DOI:
10.1016/j.ecoinf.2022.101628

8. QT Ratio: A simple solution to individual QT correction

Author:
Nicholas D. Ether; Derek J. Leishman; Marc B. Bailie; D. Adam Lauver
Source:
Journal of pharmacological and toxicological methods 2022 v.117 pp. 107211
ISSN:
1056-8719
Subject:
arrhythmia,   etc   ; biomarkers; drug development; equations; heart rate; moxifloxacin; risk; risk assessment; toxicology;     Show all 9 Subjects
Abstract:
... Preclinical risk assessment of drug-induced arrhythmias is critical for drug development and relies on heart rate corrected QT interval (QT) prolongation as a biomarker for arrhythmia risk. However, the methods used to correct QT vary in complexity and don't account for all changes in the QT-rate relationship. Thus, we developed the novel Ratio QT correction method which characterizes that relatio ...
DOI:
10.1016/j.vascn.2022.107211

9. Effects of azumolene on arrhythmia substrate in a model of recurrent long-duration ventricular fibrillation

Author:
Praloy Chakraborty; Stéphane Massé; Mohammed Ali Azam; Catherine Thollon; Ahmed Niri; Patrick F.H. Lai; Muriel Bouly; Sheila Riazi; Kumaraswamy Nanthakumar
Source:
Biochemical and biophysical research communications 2022 v.600 pp. 123-129
ISSN:
0006-291X
Subject:
arrhythmia,   etc   ; action potentials; calcium; electric potential difference; models; rabbits; research; risk; ryanodine receptors;     Show all 9 Subjects
Abstract:
... Proarrhythmic risk of conventional anti-arrhythmic agents is linked to unintended modulation of membrane voltage dynamics. We have demonstrated that the anti-fibrillatory effect of azumolene is mediated via stabilization of the hyperphosphorylated ryanodine receptor (RyR2), leading to attenuation of diastolic calcium leak. However, the concomitant effects on membrane voltage dynamics have not been ...
DOI:
10.1016/j.bbrc.2022.02.031

10. Generation and characterization of right ventricular myocardial infarction induced by permanent ligation of the right coronary artery in mice

Author:
Liao Ruoxi; He Mingyuan; Hu Donghong; Gong Chengzheng; Du Huiying; Lin Hairuo; Sun Huijun
Source:
Journal of visualized experiments 2022 no.180 pp. e63508
ISSN:
1940-087X
Subject:
arrhythmia,   etc   ; coronary vessels; echocardiography; heart failure; hemodynamics; histology; infarction; mice; myocardial infarction; pathophysiology; therapeutics;     Show all 11 Subjects
Abstract:
... Right ventricular infarction (RVI) is a common presentation in clinical practice. Severe RVI can lead to fatal hemodynamic dysfunction and arrhythmia. In contrast to the extensively used mouse myocardial infarction (MI) model generated by left coronary artery ligation, the RVI mouse model is rarely employed due to the difficulty associated with model generation. Research on the mechanisms and trea ...
DOI:
10.3791/63508

11. Therapeutic potential of a single-dose melatonin in the attenuation of cardiac ischemia/reperfusion injury in prediabetic obese rats

Author:
Kodchanan Singhanat; Nattayaporn Apaijai; Natticha Sumneang; Chayodom Maneechote; Busarin Arunsak; Titikorn Chunchai; Siriporn C. Chattipakorn; Nipon Chattipakorn
Source:
Cellular and molecular life sciences 2022 v.79 no.6 pp. 300
ISSN:
1420-682X
Subject:
arrhythmia,   etc   ; apoptosis; autophagy; high fat diet; infarction; ischemia; melatonin; mitochondria; oxidative stress; reperfusion injury; surgery;     Show all 11 Subjects
Abstract:
... Although acute melatonin treatment effectively reduces cardiac ischemia/reperfusion (I/R) injury in lean rats by modulating melatonin receptor 2 (MT2), there is no information regarding the temporal effects of melatonin administration during cardiac I/R injury in prediabetic obese rats. Prediabetic obese rats induced by chronic consumption of a high-fat diet (HFD) were used. The rats underwent a c ...
DOI:
10.1007/s00018-022-04330-1

12. Dynamic fluctuations in maternal cardiac vagal tone moderate moment-to-moment associations between children’s negative behavior and maternal emotional support.

Author:
Niyantri Ravindran; Nancy L. McElwain; Daniel Berry; Laurie Kramer
Source:
Developmental Psychology 2022 v.58 no.2 pp. 286-296
ISSN:
0012-1649
Subject:
arrhythmia,   etc   ; behavior change; games; girls; maternal behavior; models; mothers; objectives; parenting; prediction; preschool children; psychology; sinuses;     Show all 13 Subjects
Abstract:
... Our primary objective was to examine the extent to which moment-to-moment associations between preschool-aged children's behavior and maternal emotional support differed for mothers showing different levels of parasympathetic engagement. We used behavioral observations of maternal and child behavior and maternal changes in cardiac vagal tone assessed via respiratory sinus arrhythmia in 15-s interv ...
Handle:
10113/7680265
DOI:
10.1037/dev0001299
CHORUS:
10.1037/dev0001299

13. Successful treatment of prolonged refractory ventricular fibrillation in an anesthetized dog

Author:
Bonnie J. Gatson; Simon Swift; Vaidehi Paranjape
Source:
Journal of veterinary emergency and critical care 2022 v.32 no.1 pp. 129-134
ISSN:
1479-3261
Subject:
arrhythmia,   etc   ; German Shepherd; anesthesia; cardiac arrest; dogs; energy; epinephrine; magnesium sulfate; medicine; patent ductus arteriosus; patients;     Show all 11 Subjects
Abstract:
... OBJECTIVE: To describe a case of successful return of spontaneous circulation in an anesthetized dog that developed spontaneous ventricular fibrillation during CPR that was refractory to multiple defibrillation attempts by utilizing pharmacological antiarrhythmic therapy. CASE SUMMARY: Cardiopulmonary arrest occurred during surgical preparation in a 1‐year‐old German Shepherd Dog under general ane ...
DOI:
10.1111/vec.13132

14. A novel wireless ECG system for prolonged monitoring of multiple zebrafish for heart disease and drug screening studies

Author:
Tai Le; Jimmy Zhang; Anh H. Nguyen; Ramses Seferino Trigo Torres; Khuong Vo; Nikil Dutt; Juhyun Lee; Yonghe Ding; Xiaolei Xu; Michael P.H. Lau; Hung Cao
Source:
Biosensors & bioelectronics 2022 v.197 pp. 113808
ISSN:
0956-5663
Subject:
arrhythmia,   etc   ; Danio rerio; anesthetics; biosensors; data quality; drug therapy; electrocardiography; fish; heart rate; mutants; sodium; temperature;     Show all 12 Subjects
Abstract:
... Zebrafish and their mutant lines have been extensively used in cardiovascular studies. In the current study, the novel system, Zebra II, is presented for prolonged electrocardiogram (ECG) acquisition and analysis for multiple zebrafish within controllable working environments. The Zebra II is composed of a perfusion system, apparatuses, sensors, and an in-house electronic system. First, the Zebra ...
DOI:
10.1016/j.bios.2021.113808

15. Alterations in calmodulin-cardiac ryanodine receptor molecular recognition in congenital arrhythmias

Author:
Giuditta Dal Cortivo; Carlo Giorgio Barracchia; Valerio Marino; Mariapina D’Onofrio; Daniele Dell’Orco
Source:
Cellular and molecular life sciences 2022 v.79 no.2 pp. 127
ISSN:
1420-682X
Subject:
arrhythmia,   etc   ; calcium; calmodulin; cardiomyocytes; dissociation; molecular dynamics; peptides; protein-protein interactions; ryanodine receptors; spectral analysis; thermodynamics;     Show all 11 Subjects
Abstract:
... Calmodulin (CaM), a ubiquitous and highly conserved Ca²⁺-sensor protein involved in the regulation of over 300 molecular targets, has been recently associated with severe forms of lethal arrhythmia. Here, we investigated how arrhythmia-associated mutations in CaM localized at the C-terminal lobe alter the molecular recognition with Ryanodine receptor 2 (RyR2), specifically expressed in cardiomyocy ...
DOI:
10.1007/s00018-022-04165-w

16. Arrhythmogenic right ventricular cardiomyopathy in Bulldogs: Evaluation of clinical and histopathologic features, progression, and outcome in 71 dogs (2004–2016)

Author:
S.L. Holdt; N.K. Peckens; S. Rosenthal; R. Cober
Source:
Journal of veterinary cardiology 2022 v.40 pp. 170-183
ISSN:
1760-2734
Subject:
arrhythmia,   etc   ; blood; cardiomyopathy; confidence interval; death; genes; genetic analysis; heart failure; histopathology; mixed breeds; mortality; mutation; syncope;     Show all 13 Subjects
Abstract:
... This study aimed to characterize the clinical and histopathological features of arrhythmogenic right ventricular cardiomyopathy (ARVC) in English Bulldogs, American Bulldogs, and Bulldog-type mixed breed dogs and assess affected Bulldogs for a striatin gene mutation previously reported in Boxers with ARVC. Seventy-one Bulldogs fit the inclusion criteria. Genetic analysis was performed on five dogs ...
DOI:
10.1016/j.jvc.2021.10.003

17. Impact of malnutrition on in-hospital outcomes in takotsubo cardiomyopathy

Author:
Pengyang Li; Chenlin Li; Ajay Kumar Mishra; Peng Cai; Xiaojia Lu; Akil Adrian Sherif; Ling Jin; Bin Wang
Source:
Nutrition 2022 v.93 pp. 111495
ISSN:
0899-9007
Subject:
arrhythmia,   etc   ; acute kidney injury; cardiac arrest; cardiomyopathy; confidence interval; databases; malnutrition; mortality; nutrition; odds ratio; regression analysis;     Show all 11 Subjects
Abstract:
... This study assesses the effect of malnutrition on the in-hospital outcomes of patients with takotsubo cardiomyopathy (TCM).We performed a retrospective cohort analysis using the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes for a primary diagnosis of TCM from the National Inpatient Sample database (2016–2018). A concurrent diagnosis of malnutriti ...
DOI:
10.1016/j.nut.2021.111495

18. Cardiotoxicity drug screening based on whole-panel intracellular recording

Author:
Yang Yang; Aofei Liu; Ching-Ting Tsai; Chun Liu; Joseph C. Wu; Bianxiao Cui
Source:
Biosensors & bioelectronics 2022 v.216 pp. 114617
ISSN:
0956-5663
Subject:
arrhythmia,   etc   ; biosensors; calcium; cardiomyocytes; cardiotoxicity; drug therapy; drug toxicity; drugs; electrodes; heart failure; potassium; sodium; sodium channels;     Show all 13 Subjects
Abstract:
... Unintended binding of small-molecule drugs to ion channels affects electrophysiological properties of cardiomyocytes and potentially leads to arrhythmia and heart failure. The waveforms of intracellular action potentials reflect the coordinated activities of cardiac ion channels and serve as a reliable means for assessing drug toxicity, but the implementation is limited by the low throughput of pa ...
DOI:
10.1016/j.bios.2022.114617

19. Effects of different photoperiods on flower opening, flower closing and circadian expression of clock-related genes in Iris domestica and I. dichotoma

Author:
Rong Liu; Yike Gao; Zhuping Fan; Chunjing Guan; Qixiang Zhang
Source:
Journal of plant research 2022 v.135 no.2 pp. 351-360
ISSN:
0918-9440
Subject:
arrhythmia,   etc   ; Iris domestica; RNA; auxins; circadian clocks; cryptochromes; flowers; genes; hypocotyls; phytochrome; research; scotophase; transcription (genetics); white light;     Show all 14 Subjects
Abstract:
... The circadian clock can entrain to forced light-dark cycles by adjusting the phases and periods of flower opening and closing in ephemeral flowers. The responses of circadian rhythms to the same light conditions differ from species. However, the differences in internal genetic mechanisms underlying the different responses between species remain unclear. Iris domestica and I. dichotoma have ephemer ...
DOI:
10.1007/s10265-022-01374-z

20. Prediction and verification of potential lead analgesic and antiarrhythmic components in Corydalis yanhusuo W. T. Wang based on voltage-gated sodium channel proteins

Author:
Jianfang Sun; Xin Liu; Shangfeng Zhao; Suli Zhang; Liying Yang; Jinghai Zhang; Mingyi Zhao; Yijia Xu
Source:
International journal of biological macromolecules 2022 v.216 pp. 537-546
ISSN:
0141-8130
Subject:
arrhythmia,   etc   ; Corydalis yanhusuo; Oriental traditional medicine; alkaloids; analgesia; analgesics; blood circulation; databases; lead; pain; prediction; sodium; sodium channels;     Show all 13 Subjects
Abstract:
... Corydalis yanhusuo W. T. Wang, a traditional Chinese herbal medicine, has been used as an analgesic for thousands of years and it also promotes blood circulation. In this study, 33 Corydalis yanhusuo alkaloid active components were acquired from Traditional Chinese Medicine Database and Analysis Platform (TCMSP). A total of 543 pain-related targets, 1774 arrhythmia targets, and 642 potential targe ...
DOI:
10.1016/j.ijbiomac.2022.07.024