6533b854fe1ef96bd12aded4
RESEARCH PRODUCT
Causal relationships in the variability of cardiovascular system evoked by orthostatic stress by transfer entropy.
Luca FaesDorota WejerDanuta Makowiecsubject
AdultMalemedicine.medical_specialtyEntropyPostureBiomedical EngineeringHealth InformaticsBlood PressureBaroreflexYoung AdultHeart RateStress PhysiologicalInternal medicineHealthy volunteersHeart ratemedicineTilt testHumans1707business.industryHeartBaroreflexBlood pressureAnesthesiaSignal ProcessingSettore ING-INF/06 - Bioingegneria Elettronica E Informaticacardiovascular systemCardiologyOrthostatic stressTransfer entropyFemalebusinessdescription
The coupling between cardiac and vascular systems in healthy volunteers, elicited by the head-up tilt test is estimated by means of transfer entropy with non-uniform embedding. The method applied to beat-to-beat recordings with heart periods and systolic blood pressure, supports the commonly accepted model, that baroreflex is the key factor in maintaining homeostatic blood distribution after tilting. However the method applied to changes of heart periods and changes of blood pressure, display switches in the driving system, from vascular in the early tilt, to cardiac just after the early tilt and back to vascular in the late tilt.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-01 | Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference |