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rdf:type
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Description
| - Using an information-theoretic approach, causality between the systolic amplitude in blood pressure and the frequency of the heart beat was analyzed. Blood pressure and ECG were noninvasively recorded in young, healthy subjects. Three successive measurements were performed: during spontaneous breathing and during paced respiration-at frequencies both higher and lower than that of spontaneous respiration. We demonstrate that the amplitude and frequency of the cardiac rhythm are synchronized for most of the time. The synchronization is stronger during paced respiration at a frequency lower than that of spontaneous breathing. Episodes where the cardiac frequency was driven by the systolic pressure were also detected during slow, paced respiration.
- Using an information-theoretic approach, causality between the systolic amplitude in blood pressure and the frequency of the heart beat was analyzed. Blood pressure and ECG were noninvasively recorded in young, healthy subjects. Three successive measurements were performed: during spontaneous breathing and during paced respiration-at frequencies both higher and lower than that of spontaneous respiration. We demonstrate that the amplitude and frequency of the cardiac rhythm are synchronized for most of the time. The synchronization is stronger during paced respiration at a frequency lower than that of spontaneous breathing. Episodes where the cardiac frequency was driven by the systolic pressure were also detected during slow, paced respiration. (en)
- Kauzální vztahy mezi amplitudou systolického tlaku a frekvencí srdečního rytmu byly analyzovány pomocí metod teorie informace. Krevní tlak a EKG mladých, zdravých dobrovolníků byly měřeny neinvazívním způsobem ve třech situacích: během spontánního dýchaní a během řízeného dýchání s frekvencí jak vyšší tak nižší než frekvence spontanního dýchaní. Ukázali jsme, že amplituda a frekvence srdečního rytmu jsou většinou synchronizovány. Synchronizace je silnější během řízené respirace s frekvencí nižší než u spontanního dýchaní. Během pomalého, řízeného dýchání byly detekovány epizody, ve kterých srdeční frekvence byla řízena systolickým tlakem. (cs)
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Title
| - Causality between the Amplitude and Frequency of Cardiac Oscillations
- Causality between the Amplitude and Frequency of Cardiac Oscillations (en)
- Kauzalita mezi amplitudou a frekvencí srdečních oscilací (cs)
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skos:prefLabel
| - Causality between the Amplitude and Frequency of Cardiac Oscillations
- Causality between the Amplitude and Frequency of Cardiac Oscillations (en)
- Kauzalita mezi amplitudou a frekvencí srdečních oscilací (cs)
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skos:notation
| - RIV/67985807:_____/04:00105222!RIV/2005/AV0/A06005/N
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/67985807:_____/04:00105222
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - causality; cardiac frequency; systolic pressure; information theory; mutual information; synchronization; direction of driving (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Cardiovascular Engineering
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Paluš, Milan
- Stefanovska, A.
- Veber, M.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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