Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xie, Z.X. Yin, Y.H. Chen, L.C. Xu, X.H. Liu, Z.Z. Zhi Dong Neng Zhang Xia, D.M. Lu, H.D. |
| Copyright Year | 1998 |
| Description | Author affiliation: Dept. of Biomed. Eng., Chongqing Univ. of Med. Sci., China (Xie, Z.X.) |
| Abstract | The major atrial frequencies (MAFs) and their corresponding major atrial cycle lengths (MACLs) were evaluated by analysing spectra of atrial fibrillation waves (AFW) from a patient with atrial fibrillation (AF). The running variations of MAF were studied. The electrocardiosignal (ECS) was acquired at sampling rate 512 Hz, in 20 seconds. After ECS was smoothed and QRST complex subtracted, the remainder is the AFW signal. Then its windowed FFT with 1024 points was computed. The spectral distribution in whole band, major band ranged 3 to 13 Hz, and running spectra in whole band, 3 to 33 Hz band and >33 Hz band were given. MAFs and corresponding MACLs from 4 to 12 Hz, power values in whole band, major band ranged 4 to 12 Hz, /spl les/20 Hz band, /spl les/30 Hz band and /spl ges/4 Hz band were computed, respectively. The results showed that (1) the major power value of AFW were in lower than 20 Hz band (e.g. 99.5%). (2) there is a spectral distribution in the band ranged 4 to 12 Hz. The 1st, 2nd and 3rd peak frequencies taken by power order were named MAF1, MAF2 and MAF3, respectively. The MAF1 was called as the dominant atrial frequency (DFA), its corresponding atrial cycle length was called as the dominant atrial cycle length (DACL). The latter was related to the atrial functional refractory period (AFRP) strictly. (3) The complexity of the spectral distribution in 4 to 12 Hz band suggests the complexity of AFW in time domain. (4) The dynamic spectral analysis showed that the DAF is unstable over time. Any significant structure in >30 Hz band was not observed. |
| Starting Page | 115 |
| Ending Page | 118 |
| File Size | 355205 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780351649 |
| ISSN | 1094687X |
| DOI | 10.1109/IEMBS.1998.745843 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1998-11-01 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Atrial fibrillation Cardiology Frequency Sampling methods Educational institutions Spectral analysis Biomedical engineering Time domain analysis Medical treatment Calcium |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|