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Título:
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Effect of acute myocardial ischemia on different high-frequency bandwidths and temporal regions of the QRS
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Autor/a:
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Magrans Nicieza, Rudys; Gomis Román, Pedro; Voss, Andreas; Caminal Magrans, Pere
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial; Universitat Politècnica de Catalunya. SISBIO - Senyals i Sistemes Biomèdics |
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Abstract:
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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. |
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Abstract:
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Peer Reviewed |
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Materia(s):
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-Àrees temàtiques de la UPC::Informàtica
-Àrees temàtiques de la UPC::Ciències de la salut
-Computer science
-Medicine
-Informàtica industrial
-Enginyeria de sistemes |
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Derechos:
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Tipo de documento:
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Artículo - Versión publicada
Objeto de conferencia |
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Editor:
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IEEE
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Compartir:
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