The analysis of linear/nonlinear coupling between heart rate and QT intervals

Kód výsledku v IS VaVaI

RIV/68081731:_____/14:00431995 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1109/ESGCO.2014.6847517

DOI - Digital Object Identifier

10.1109/ESGCO.2014.6847517

Jazyk výsledku

angličtina

Název v původním jazyce

The analysis of linear/nonlinear coupling between heart rate and QT intervals

Popis výsledku v původním jazyce

Two groups of subjects (21 healthy, 21 hypertensive patients) were tested during two measurement protocols (exercise, tilt). Two models of QT-RR coupling were tested - linear (LM) and nonlinear (NLM). QTc reproducibility was used as evidence of model validity. Results: LM was significantly better (lower QTc irreproducibility) than NLM (P<;0.01) during the tilt-table test. The differences were not significant during the exercise test; NLM was slightly better in hypertensive patients, LM in healthy subjects. Maximal irreproducibility of QTc over subjects was found in both tests with NLM. Conclusion: Evidence of QT-RR nonlinearity cannot be based on minimal error between QT and model QT. QTc reproducibility must also be tested and the excitation specificity of QT-RR coupling must be considered.Two groups of subjects (21 healthy, 21 hypertensive patients) were tested during two measurement protocols (exercise, tilt). Two models of QT-RR coupling were tested - linear (LM) and nonlinear (NLM

Název v anglickém jazyce

The analysis of linear/nonlinear coupling between heart rate and QT intervals

Popis výsledku anglicky

Two groups of subjects (21 healthy, 21 hypertensive patients) were tested during two measurement protocols (exercise, tilt). Two models of QT-RR coupling were tested - linear (LM) and nonlinear (NLM). QTc reproducibility was used as evidence of model validity. Results: LM was significantly better (lower QTc irreproducibility) than NLM (P<;0.01) during the tilt-table test. The differences were not significant during the exercise test; NLM was slightly better in hypertensive patients, LM in healthy subjects. Maximal irreproducibility of QTc over subjects was found in both tests with NLM. Conclusion: Evidence of QT-RR nonlinearity cannot be based on minimal error between QT and model QT. QTc reproducibility must also be tested and the excitation specificity of QT-RR coupling must be considered.Two groups of subjects (21 healthy, 21 hypertensive patients) were tested during two measurement protocols (exercise, tilt). Two models of QT-RR coupling were tested - linear (LM) and nonlinear (NLM

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

LO1212: ALISI - Centrum pokročilých diagnostických metod a technologií

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO 2014)

ISBN

978-1-4799-3968-8

ISSN

—

e-ISSN

—

Počet stran výsledku

2

Strana od-do

59-60

Název nakladatele

IEEE

Místo vydání

Trento

Místo konání akce

Trento

Datum konání akce

25. 5. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000343599700030