About: Subject-specific profiles of QT/RR hysteresis

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The time lag of the QT interval adaptation to heart rate changes (QT/RR hysteresis) was studied in 40 healthy subjects (18 females; mean age, 30.4 +/- 8.1 yr) with 3 separate daytime (> 13 h) 12-lead electrocardiograms (ECG) in each subject. In each recording, 330 individual 10-s ECG segments were measured, including 100 segments preceded by 2 min of heart rate varying greater than +/- 2 beats/min. Other segments were preceded by a stable heart rate. In segments preceded by variable rate, QT/RR hysteresis was characterized by lambda parameters of the exponential decay models. The intrasubject SDs of lambda values were compared with the intersubject SD of the individual means. The lambda values were also correlated to individually optimized parameters of heart rate correction. Intrasubject SDs of lambda were substantially smaller than the population SD of individual means (0.390 +/- 0.197 vs. 0.711, P < 0.0001). The lambda values were unrelated to the QT/RR correction parameters. The time lag of the QT interval adaptation to heart rate changes (QT/RR hysteresis) was studied in 40 healthy subjects (18 females; mean age, 30.4 +/- 8.1 yr) with 3 separate daytime (> 13 h) 12-lead electrocardiograms (ECG) in each subject. In each recording, 330 individual 10-s ECG segments were measured, including 100 segments preceded by 2 min of heart rate varying greater than +/- 2 beats/min. Other segments were preceded by a stable heart rate. In segments preceded by variable rate, QT/RR hysteresis was characterized by lambda parameters of the exponential decay models. The intrasubject SDs of lambda values were compared with the intersubject SD of the individual means. The lambda values were also correlated to individually optimized parameters of heart rate correction. Intrasubject SDs of lambda were substantially smaller than the population SD of individual means (0.390 +/- 0.197 vs. 0.711, P < 0.0001). The lambda values were unrelated to the QT/RR correction parameters. (en)
Title	Subject-specific profiles of QT/RR hysteresis Subject-specific profiles of QT/RR hysteresis (en)
skos:prefLabel	Subject-specific profiles of QT/RR hysteresis Subject-specific profiles of QT/RR hysteresis (en)
skos:notation	RIV/00216224:14110/08:00059842!RIV13-MSM-14110___
http://linked.open...avai/riv/aktivita	I P V
http://linked.open...avai/riv/aktivity	I, P(NR9340), V
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Novotný, Tomáš
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Lékařská fakulta
http://linked.open...dnocenehoVysledku	398246
http://linked.open...ai/riv/idVysledku	RIV/00216224:14110/08:00059842
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	QT adaptation; individual QT correction; electrocardiogram measurement; corrected QT variability (en)
http://linked.open.../riv/klicoveSlovo	corrected QT variability electrocardiogram measurement individual QT correction QT adaptation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[34DB217D0130]
http://linked.open...i/riv/nazevZdroje	AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY
http://linked.open...in/vavai/riv/obor	FP
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Occurence of myocardial ion channel genes polymorphisms in relationship to sudden cardiac death in patients with structural heart disease
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	295
http://linked.open...iv/tvurceVysledku	Novotný, Tomáš Malik, Marek Schmidt, G. Hnatkova, Kateřina
http://linked.open...ain/vavai/riv/wos	000261399900018
issn	0363-6135
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1152/ajpheart.00625.2008
http://localhost/t...ganizacniJednotka	14110
is http://linked.open...avai/riv/vysledek of	Subject-specific profiles of QT/RR hysteresis

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