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The Relationship between Right Ventricular Pacing Voltage and QRS Complex Duration
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SYSNO ASEP 0324788 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The Relationship between Right Ventricular Pacing Voltage and QRS Complex Duration Title Vztah mezi ventrikulárním budícím napětím a délkou QRS komplexu Author(s) Vančura, V. (CZ)
Wichterle, D. (CZ)
Brabec, Marek (UIVT-O) RID, SAI, ORCID
Bytešník, J. (CZ)
Lefflerová, K. (CZ)
Kautzner, J. (CZ)Source Title Physiological Measurement. - : Institute of Physics Publishing - ISSN 0967-3334
Roč. 30, č. 5 (2009), s. 517-527Number of pages 11 s. Language eng - English Country GB - United Kingdom Keywords cardiac pacing ; QRS complex duration ; pacing voltag ; vectorcardiography ; nonlinear regression analysis Subject RIV BB - Applied Statistics, Operational Research CEZ AV0Z10300504 - UIVT-O (2005-2011) UT WOS 000265764400008 EID SCOPUS 67651165341 DOI 10.1088/0967-3334/30/5/008 Annotation The aim of our study was to describe the relation between the right ventricular pacing voltage and the QRS complex duration. Fourteen patients (73.6 ± 7.6 years) with AV block and implanted pacemakers were paced at a frequency of 100 bpm with various pacing voltages. A signal averaged QRS vector length was calculated at each degree of pacing voltage. The changes in the QRS complex duration were measured as a relative shift of the terminal region of the vectorcardiographic QRS complex (end-shift) and its most prominent peak (peak-shift) using the cross-correlation method. The nonlinear relationship between stimulation voltage and QRS duration was observed with the highest impact of stimulation voltage changes near the threshold value. The fourfold increase in the stimulation voltage above the threshold caused QRS complex shortening by 3.7 ± 2.1 ms (range 0.19 – 7.76 ms) Workplace Institute of Computer Science Contact Tereza Šírová, sirova@cs.cas.cz, Tel.: 266 053 800 Year of Publishing 2009
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