NDLI: Rhythm or morphology-which information in the ECG is more useful with respect to detection of sleep apnea?

Content Provider	IEEE Xplore Digital Library
Author	Dickhaus, H. Maier, C.
Copyright Year	2003
Description	Author affiliation: Dept. of Med. Informatics, Heidelberg Univ., Germany (Dickhaus, H.; Maier, C.)
Abstract	This study investigates and compares the utility of different electrocardiographic features quantifying variability of either heart rhythm or of ECG morphology for detection of sleep apnea. For heart rhythm, the sequence of RR-intervals was analyzed. To characterize ECG morphology, signal vectors were extracted from the QRS- and the T-wave region. Their projection on the first principal component yields series of scalar coefficients which were used as parameters of morphology. From the derived series as well as from a demodulated version of these sequences, we calculated a measure of similarity as well as a spectral parameter from temporal segments of 5 minutes duration. The diagnostic accuracy of these features was evaluated by means of ROC-analysis and a second order polynomial classifier. Best results were obtained from the local similarity index of the projection coefficients from the T-wave region (sensitivity 87.2%, specificity 87.5%). A slight performance increase was achieved by considering additional features from the QRS-region and the RR-intervals (88.8%/93.1%). It is concluded that although relevant information is embedded in the heart rhythm, the variability of ECG morphology reflect apnea related patterns slightly better.
Sponsorship	Whitaker Found
Starting Page	334
Ending Page	337
File Size	392953
Page Count	4
File Format	PDF
ISBN	0780377893
ISSN	1094687X
DOI	10.1109/IEMBS.2003.1279637
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-17
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rhythm Electrocardiography Sleep apnea Morphology Cardiology Heart rate Biomedical informatics Polynomials Accidents Medical diagnostic imaging
Content Type	Text
Resource Type	Article

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