Effect of acute myocardial ischemia on different high-frequency bandwidths and temporal regions of the QRS

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/13665

dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial
dc.contributor	Universitat Politècnica de Catalunya. SISBIO - Senyals i Sistemes Biomèdics
dc.contributor.author	Magrans Nicieza, Rudys
dc.contributor.author	Gomis Román, Pedro
dc.contributor.author	Voss, Andreas
dc.contributor.author	Caminal Magrans, Pere
dc.date	2011
dc.identifier.citation	Magrans, R. [et al.]. Effect of acute myocardial ischemia on different high-frequency bandwidths and temporal regions of the QRS. A: Annual International IEEE EMBS Conference. "33rd Annual International IEEE EMBS Conference". Boston: IEEE, 2011, p. 7083-7086.
dc.identifier.citation	978-1-4244-4122-8
dc.identifier.uri	http://hdl.handle.net/2117/13665
dc.language.iso	eng
dc.publisher	IEEE
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Informàtica
dc.subject	Àrees temàtiques de la UPC::Ciències de la salut
dc.subject	Computer science
dc.subject	Medicine
dc.subject	Informàtica industrial
dc.subject	Enginyeria de sistemes
dc.title	Effect of acute myocardial ischemia on different high-frequency bandwidths and temporal regions of the QRS
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	The purpose of this study was to describe the changes in high-frequency QRS (HF-QRS) components due to myocardial ischemia provoked by prolonged artery occlusion during percutaneous coronary interventions (PCI). Signalaveraged ECGs from 69 patients were obtained during PCI procedures and comparison of high-frequency components of the QRS at different temporal regions and frequency bandwidth were performed. Continuous wavelet transform was applied to estimate the energy contents over the studied timefrequency regions. Seven frequency bands from 50 to 300 Hz, with bandwidth = 100 Hz were considered. The sum of all 12 leads energy decreased significantly (p < 0.001) from pre-PCI to PCI during both second half and total QRS complex in all frequency bands, but the main effect was found in the 200-300 Hz band. The energy changes were more marked toward higher frequency bands. The second half of QRS complex was more sensitive to changes due to myocardial ischemia.
dc.description.abstract	Peer Reviewed

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