Short-term hemodynamic variability in supine and tilted position in young men

Gerard Cybulski , Edward Koźluk , Agnieszka Piątkowska , Ewa Michalak , Anna Stępniewska , Anna Gąsiorowska , Wiktor Niewiadomski


The aim of the study was to evaluate short-term changes in hemodynamic parameters observed in supine and tilted positions in six young men (age: 21–25). The cardiac inter-beat interval (RR), stroke volume (SV), ejection time (ET) and pre-ejection period (PEP) parameters were followed over two six-minute periods, in supine position and 10 min after a 60-degree head-up tilting maneuver, using continuously recorded impedance cardiography (ICG) and electrocardiography (ECG) signals. Hemodynamic variability was evaluated using coefficient of variation (CV), standard deviation (SD), and quartile deviation (QD). For the supine position, the mean (M), SD, CV and QD of the observed parameters were as follows. SV: 79 ml, 16 ml, 20%, 15 ml. RR: 905 ms, 106 ms, 12%, 163 ms. ET: 308 ms, 29 ms, 10%, 33 ms. PEP: 105 ms, 19 ms, 18%, 28 ms. In the tilted position, the following were observed. SV: 54 ml, 12 ml, 21%, 15 ml. RR: 706 ms, 68 ms, 10%, 68 ms. ET: 259 ms, 38 ms, 14%, 28 ms. PEP: 123 ms, 13 ms, 12%, 15 ms. The changes in hemodynamic variability caused by tilting were not unidirectional.

Author Gerard Cybulski (FM / IMBE)
Gerard Cybulski,,
- The Institute of Metrology and Biomedical Engineering
, Edward Koźluk
Edward Koźluk,,
, Agnieszka Piątkowska
Agnieszka Piątkowska,,
, Ewa Michalak
Ewa Michalak,,
, Anna Stępniewska - [University of Warsaw (UW)]
Anna Stępniewska,,
- Uniwersytet Warszawski
, Anna Gąsiorowska
Anna Gąsiorowska,,
, Wiktor Niewiadomski - Instytut Medycyny Doświadczalnej i Klinicznej im. Mirosława Mossakowskiego Polskiej Akademii Nauk
Wiktor Niewiadomski,,
Publication size in sheets0.5
Book Henriques Jorge, Neves Nuno, Carvalho Joao Paulo (eds.): XV Mediterranean Conference on Medical and Biological Engineering and Computing – MEDICON 2019, IFMBE Proceedings, vol. 76, 2020, Cham, Springer, ISBN 978-3-030-31635-8
Keywords in Englishhemodynamic variability, impedance cardiography, tilt test
Languageen angielski
Score (nominal)20
Score sourcepublisherList
ScoreMinisterial score = 20.0, 03-07-2020, ChapterFromConference
Publication indicators Scopus Citations = 0
Citation count*
Share Share

Get link to the record

* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Are you sure?