NDLI: Dynamical behavior of intra-QRS potentials during induced myocardial ischemia

Content Provider	IEEE Xplore Digital Library
Author	Gomis, P. Ng, F. Lander, P. Gates, K. Wagner, G.
Copyright Year	2001
Description	Author affiliation: Dipt. Tecnologia Ind., Simon Bolivar Univ., Caracas, Venezuela (Gomis, P.)
Abstract	Assesses the prevalence and natural progression of abnormal intra-QRS potentials (AIQPs) in high-resolution electrocardiography (HRECG) during percutaneous transluminal coronary angioplasty (PTCA). 25 patients were studied: seven had occlusion of the left anterior descending (LAD) artery, nine of the left circumflex (LCX) and nine of the right coronary artery (RCA). HRECGs with enhanced signal-to-noise ratio were obtained every 60 seconds from a sub-ensemble of beats using a time-frequency-plane Wiener filter. AIQP QRS high-frequency components and ST segment deviation were estimated every 60 seconds. Mean values of AIQP amplitudes increased rapidly during the first minute of balloon inflation compared to the pre-inflation recording. The increase is maintained throughout the inflation period, decreasing after the inflation period. An analysis of variance (ANOVA) showed very significant changes in AIQP values between pre-inflation and inflation epochs (p<0.001). A relationship between AIQP timing, measured as the 'center of mass' of the AIQP signal, and the location within the artery (LAD, LCX and RCA) was found during the first minute of inflation (p=0.02); AIQP timing occurs later in RCA occlusion. These observations suggest that AIQP shows promise as a time-localized sensitive marker of ischemically altered ventricular activation.
Starting Page	65
Ending Page	68
File Size	364527
Page Count	4
File Format	PDF
ISBN	0780372662
ISSN	02766547
DOI	10.1109/CIC.2001.977592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-09-23
Publisher Place	Netherlands
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Myocardium Ischemic pain Electrocardiography Angioplasty Arteries Signal to noise ratio Wiener filter Frequency estimation Timing Signal resolution
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