NDLI logo
  • Content
  • Similar Resources
  • Metadata
  • Cite This
  • Log-in
  • Fullscreen
Log-in
Do not have an account? Register Now
Forgot your password? Account recovery
  1. Medical and Biological Engineering and Computing
  2. Medical and Biological Engineering and Computing : Volume 40
  3. Medical and Biological Engineering and Computing : Volume 40, Issue 2, March 2002
  4. Non-invasive Wedensky modulation within the QRS complex
Loading...

Please wait, while we are loading the content...

Medical and Biological Engineering and Computing : Volume 55
Medical and Biological Engineering and Computing : Volume 54
Medical and Biological Engineering and Computing : Volume 53
Medical and Biological Engineering and Computing : Volume 52
Medical and Biological Engineering and Computing : Volume 51
Medical and Biological Engineering and Computing : Volume 50
Medical and Biological Engineering and Computing : Volume 49
Medical and Biological Engineering and Computing : Volume 48
Medical and Biological Engineering and Computing : Volume 47
Medical and Biological Engineering and Computing : Volume 46
Medical and Biological Engineering and Computing : Volume 45
Medical and Biological Engineering and Computing : Volume 44
Medical and Biological Engineering and Computing : Volume 43
Medical and Biological Engineering and Computing : Volume 42
Medical and Biological Engineering and Computing : Volume 41
Medical and Biological Engineering and Computing : Volume 40
Medical and Biological Engineering and Computing : Volume 40, Issue 6, November 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 5, September 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 4, July 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 3, May 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 2, March 2002
Fuzzy rules to predict degree of malignancy in brain glioma
Model-based technique for the measurement of skin thickness in mammography
Novel ultrasonic fusion imaging method based on cyclic variation in myocardial backscatter
Ultrasound image matching using genetic algorithms
Ambulatory measurement of upper limb usage and mobility-related activities during normal daily life with an upper limb-activity monitor: A feasibility study
Biomechanical comparison of isokinetic lifting and free lifting when applied to chronic low back pain rehabilitation
Dynamic simulation of the natural and replaced human ankle joint
Root canal length measurement in teeth with electrolyte compensation
Estimation of pulmonary arterial pressure by a neural network analysis using features based on time-frequency representations of the second heart sound
Detection of atrial-flutter and atrial-fibrillation waveforms by fetal magnetocardiogram
Experimental and numerical study of the colour appearance of tattoo models
Analysis of cardiac left-ventricular volume based on time warping averaging
Non-invasive Wedensky modulation within the QRS complex
Joint symbolic dynamic analysis of beat-to-beat interactions of heart rate and systolic blood pressure in normal pregnancy
Unconstrained and non-invasive measurement of heart-beat and respiration periods using a phonocardiographic sensor
Motor unit conduction velocity distribution estimation: Assessment of two short-term processing methods
Effect of signal length on the performance of independent component analysis when extracting the lambda wave
Medical and Biological Engineering and Computing : Volume 40, Issue 1, January 2002
Medical and Biological Engineering and Computing : Volume 39
Medical and Biological Engineering and Computing : Volume 38
Medical and Biological Engineering and Computing : Volume 37
Medical and Biological Engineering and Computing : Volume 36
Medical and Biological Engineering and Computing : Volume 35

Similar Documents

...
Identification of post-myocardial infarction patients with ventricular tachycardia by time-domain intra-QRS analysis of signal-averaged electrocardiogram and magnetocardiogram

Article

...
Automatic optimum order selection of parametric modelling for the evaluation of abnormal intra-QRS signals in signal-averaged electrocardiograms

Article

...
Risk evaluation of ventricular tachycardia using wavelet transform irregularity of the high-resolution electrocardiogram

Article

...
Cardiac vulnerability assessment from electrical microvariability of high-resolution electrocardiogram

Article

...
Distinction between myocardial infarction patients with and withouthistory of ventricular tachycardia based on wavelet transformed signal-averaged electrocardiogram

Article

...
Detection of life-threatening cardiac arrhythmias using the wavelet transformation

Article

...
Fragmentation of bandpass-filtered QRS-complex of patients prone to malignant arrhythmia

Article

...
Statistical analysis of signals from an intracavitary probe in a diseased heart

Article

...
Sluggish Upstroke of Signal-Averaged QRS Complex. An Arrhythmogenic Sign in Patients with Anteroseptal Myocardial Infarction

Article

Non-invasive Wedensky modulation within the QRS complex

Content Provider SpringerLink
Author Hnatkova, K. Ryan, S. J. Bathen, J. Hoium, H. H. Malik, M.
Copyright Year 2002
Abstract To investigate non-invasively induced Wedensky modulation, 2 ms pulses of 5, 20 and 40 mA were delivered between precordial and subscapular patches synchronously with the QRS complex. Wavelet vector magnitude was obtained for averaged modulated and non-modulated complexes. The surface area of a 3D-envelope of their difference (WSR) was compared in 59 patients with an uncomplicated follow-up after myocardial infarction (MI) (42 men, 64.3±9.1 years), in 30 patients with ischaemic heart disease and a history of ventricular tachycardia/fibrillation (VT/VF) (29 men, 63.1±9.8 years), and in 53 healthy subjects (control) (22 men, 56.6±10.1 years). Reproducibility of the assessment was tested by computing relative errors in a sub-population of 30 VT/VF patients and 47 controls. Wedensky modulation parameters differed significantly between control, MI and VT/VF subjects. In 10 ms post-modulation windows, the following WSR values were obtained: controls: 1184±496 (5 mA), 1553±838 (20 mA) and 2092±1488 (40 mA); VT/VF: 861±412 (5 mA), 1134±636 (20 mA) and 1320±1036 (40 mA); MI: 1305±885 (5 mA) and 1779±1169 (20 mA). With all modulating energies used, the VT/VF patients differed significantly from both the controls and MI patients; control patients against VT/VF patients: p<0.004 (5 mA), p<0.01 (20 mA) and p<0.001 (40 mA); VT/VF patients against MI patients: p<0.02 (5 mA), p<0.01 (20 mA); control patients against MI patients: all p=NS. The reproducibility assessment showed an acceptable stability of Wedensky modulation parameters. This study demonstrated that wavelet decomposition detects non-invasive Wedensky modulation within the QRS complex, and VT/VF patients are less sensitive to Wedensky modulation than control and MI patients.
Starting Page 234
Ending Page 240
Page Count 7
File Format PDF
ISSN 01400118
Journal Medical and Biological Engineering and Computing
Volume Number 40
Issue Number 2
e-ISSN 17410444
Language English
Publisher Springer-Verlag
Publisher Date 2002-01-01
Publisher Place Berlin, Heidelberg
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword Wedensky modulation Ventricular tachycardia Myocardial infarction Signal averaged electrocardiogram Wavelet decomposition Human Physiology Neurosciences Imaging Radiology Computer Applications Biomedical Engineering
Content Type Text
Resource Type Article
Subject Biomedical Engineering Computer Science Applications
  • About
  • Disclaimer
  • Feedback
  • Sponsor
  • Contact
  • Chat with Us
About National Digital Library of India (NDLI)
NDLI logo

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.

Disclaimer

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.

Feedback

Sponsor

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.

Contact National Digital Library of India
Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302
See location in the Map
03222 282435
Mail: support@ndl.gov.in
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
I will try my best to help you...
Cite this Content
Loading...