Fibrillation

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Fibrillation is the rapid, irregular, and unsynchronized contraction of muscle fibers. (Wikipedia.org)


Conferences related to Fibrillation

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2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore


2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI)

The IEEE International Symposium on Biomedical Imaging (ISBI) is the premier forum for the presentation of technological advances in theoretical and applied biomedical imaging.ISBI 2019 will be the 16th meeting in this series. The previous meetings have played a leading role in facilitating interaction between researchers in medical and biological imaging. The 2019 meeting will continue this tradition of fostering cross fertilization among different imaging communities and contributing to an integrative approach to biomedical imaging across all scales of observation.


2019 IEEE Industry Applications Society Annual Meeting

The Annual Meeting is a gathering of experts who work and conduct research in the industrial applications of electrical systems.


2019 IEEE International Ultrasonics Symposium (IUS)

The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.


ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

ICASSP is the world’s largest and most comprehensive technical conference focused on signal processing and its applications. The conference will feature world-class presentations by internationally renowned speakers, cutting-edge session topics and provide a fantastic opportunity to network with like-minded professionals from around the world.


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Periodicals related to Fibrillation

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Biomedical Circuits and Systems, IEEE Transactions on

The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Education, IEEE Transactions on

Educational methods, technology, and programs; history of technology; impact of evolving research on education.


Engineering in Medicine and Biology Magazine, IEEE

Both general and technical articles on current technologies and methods used in biomedical and clinical engineering; societal implications of medical technologies; current news items; book reviews; patent descriptions; and correspondence. Special interest departments, students, law, clinical engineering, ethics, new products, society news, historical features and government.


Industrial Informatics, IEEE Transactions on

IEEE Transactions on Industrial Informatics focuses on knowledge-based factory automation as a means to enhance industrial fabrication and manufacturing processes. This embraces a collection of techniques that use information analysis, manipulation, and distribution to achieve higher efficiency, effectiveness, reliability, and/or security within the industrial environment. The scope of the Transaction includes reporting, defining, providing a forum for discourse, and informing ...


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Xplore Articles related to Fibrillation

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The bravest biomedical engineer: Dr. Gottfried Biegelmeier

IEEE Engineering in Medicine and Biology Magazine, 2003

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Discussion on Instantaneous pq Strategiesfor Control of Active Filters

IEEE Transactions on Biomedical Engineering, 2004

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Working Safely With Hazardous Capacitors

IEEE Industry Applications Magazine, None

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Ventricular fibrillation in rats with cardiac fibrosis

Computers in Cardiology, 2002

Previous studies have shown that administration of angiotensin II (Ang II) causes atrial and ventricular fibrosis in rats, as is found in patients with chronic heart failure. We hypothesize that fibrosis creates a substrate that promotes the induction of ventricular fibrillation (VF). Fourteen, eight-week old, Sprague-Dawley rats were studied. Eleven received a four-week treatment of Ang II (9 /spl mu/g/hr) ...


Nonlinear analysis of human ECG during sinus rhythm and arrhythmia

Computers in Cardiology 2000. Vol.27 (Cat. 00CH37163), 2000

Using a new data collection facility we have recorded spontaneous episodes of VF (and other arrhythmia) in human subjects. We apply correlation dimension analysis and linear and nonlinear surrogate techniques to these data sets. We conclude that human VF is distinct from linearly filtered noise, but not distinct from a noise driven nonlinear system. The correlation dimension estimate from spontaneous ...


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Educational Resources on Fibrillation

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IEEE.tv Videos

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IEEE-USA E-Books

  • The bravest biomedical engineer: Dr. Gottfried Biegelmeier

    None

  • Discussion on Instantaneous pq Strategiesfor Control of Active Filters

    None

  • Working Safely With Hazardous Capacitors

    None

  • Ventricular fibrillation in rats with cardiac fibrosis

    Previous studies have shown that administration of angiotensin II (Ang II) causes atrial and ventricular fibrosis in rats, as is found in patients with chronic heart failure. We hypothesize that fibrosis creates a substrate that promotes the induction of ventricular fibrillation (VF). Fourteen, eight-week old, Sprague-Dawley rats were studied. Eleven received a four-week treatment of Ang II (9 /spl mu/g/hr) from an implanted mini-pump. After treatment, the chest was opened, and 50 Hz stimulation at a strength of three times the pacing threshold was applied across the atria and ventricles for 2.5, 5, and 10 s. VF was more inducible in treated rats (6 of 11) than untreated rats (0 of 3, P < 0.05). Three of 12 VF episodes were sustained (> 10 s) while the remaining VF episodes were nonsustained (> 30 ms and < 10 s) after stimulation ended. Our results suggest that cardiac fibrosis induced by Ang II treatment creates a substrate for sustained VF.

  • Nonlinear analysis of human ECG during sinus rhythm and arrhythmia

    Using a new data collection facility we have recorded spontaneous episodes of VF (and other arrhythmia) in human subjects. We apply correlation dimension analysis and linear and nonlinear surrogate techniques to these data sets. We conclude that human VF is distinct from linearly filtered noise, but not distinct from a noise driven nonlinear system. The correlation dimension estimate from spontaneous VF is between 5 and 8. Furthermore, we show that the temporal complexity (dimensionality) during VF is higher than that observed during VT (4-5) and that during sinus rhythm (3-4). Finally, the characteristic shape of dimension curves obtained during sinus rhythm and arrhythmia are clearly distinct. These results are consistent with those obtained from animal experiments and with computational simulations of spiral wave break-up.

  • Prediction of successful cardioversion in atrial fibrilation using wavelet analysis parameters and sample entropy

    In a substantial number of patients atrial fibrillation (AF) recurs after successful electrical cardioversion, but at present there are no reliable clinical markers for confidently identifying the patients in which recurrence will occur within a short period of time. This study evaluates the predictive classification performance of some Discrete Wavelet Transform (DWT) indices in distinguishing recurrent and non-recurrent AF episodes. A validated database of 33 ECG recordings acquired from AF subjects undergoing cardioversion was used throughout the study, together with their known recurrence status at one month. The DWT was applied to these ECG recordings. Several parameters were extracted from the decomposition bands as potential features for predicting the recurrence of AF episodes. The estimated classification rate of the extracted features was evaluated using linear discriminant analysis (LDA). For a separate 11 registers training set and 22 registers testing set, the performance of the classifier testing set gave an estimated accuracy of 82%. We conclude that features extracted from sub-band decomposition of the ECG can provide some indicator of the likelihood of AF recurrence.

  • A Morphological Method For Separation Of Ventricular Tachycardia From Ventricular Fibrillation On Intracardiac Electrograms

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  • Influence of 1B ischemic ventricular tissue on the automaticity of Purkinje fibers: A simulation study

    A computer model has been developed to study the electrical activity of a Purkinje fiber of 1.5 cm coupled to a regionally 1B ischemic ventricular fiber of 3 cm through a Purkinje-muscle resistance (R<sub>pvj</sub>). The ventricular fiber was composed of a 1B ischemic zone, a border zone and a normal zone of 1 cm each. To simulate ischemia, we altered several electrophysiological parameters of the Luo-Rudy action potential model (Lrd00). The aim of this study was to investigate the influence of 1B ischemic ventricular tissue on the automaticity of Purkinje cells and its role in ectopic activity that could provoke arrhythmias. Our study suggests that 1B ischemic ventricular tissue enhances automaticity of Purkinje fibers and could have an important role on the generation of ectopic action potentials near the Purkinje-muscle junctions. This phenomenon may be involved in the generation of ectopic activity and cardiac arrhythmias.

  • Probabilistic neural network array architecture for ECG classification

    Using an array of three probabilistic neural networks (PNNs), we successfully identified both normal sinus rhythm (NSR) and atrial fibrillation (AF), as well as normal and PVC waveforms. Training and test waveforms were obtained from the MIT-BIH Arrhythmia Database. We applied various preprocessing techniques to reduce the dimension of the training sets. Combining independent PNNs, each classifying based on either shape or rhythm, we enhanced the integrated system performance by diminishing PNN element misclassifications. Most notably, the percentage of correctly classified PVCs from testing record 116, the worst performance based on shape, increased from 1.8% for a shape- only classification to 84.4% when adding rhythm information. Similarly, the amount of correctly classified NSR from testing record 201, the worst performance based on rhythm, rose from 18.7% to 92.0% when shape information was added.

  • Fiberglass needle electrodes for transmural cardiac mapping

    We developed a new method for fabricating plunge needle electrodes for use in cardiac mapping. The needles have 12 electrodes with 1-mm spacing, are 0.5 mm in diameter, and are fabricated from fiberglass reinforced epoxy. They are stiff enough to be easily inserted into beating hearts and durable enough to be reused many times. We found that these new needles elicit smaller, more quickly resolving injury potentials, and when inserted in a row with 2-mm spacing, disrupt ventricular fibrillation activation patterns less than traditional steel needles.


Standards related to Fibrillation

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IEEE Standard for Safety Levels With Respect to Human Exposure to Electromagnetic Fields, 0-3 kHz

Develop safety levels for human exposure to electromagnetic fields from 0 to 3kHz. This standard will be based on the results of an evaluation of the relevant scientific literature and proven effects which are well established and for which thresholds of reaction are understood. Field limits will be derived from threshold current densities or internal electric fields.


Jobs related to Fibrillation

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