Naslov
Increased sympathetic activity in coronary artery disease shifts centre frequency of heart rate variability spectra leftward

Autori
Milicevic, Goran ; Udiljak, Nikola ; Gavranovic, Zeljka ; Urek, Roman ; Strinic, Dean ; Bakula, Miro

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
New approaches in coronary artery disease. Proceedings of the 8th international congress on coronary artery disease October 11 - 14, 2009, Prague, Czech Republic / Lewis, Basil S. ; Widimsky, Petr ; Flugelman Moshe Y. ; Halon David A. - Prag : Medimond International Proceedings, 2009, 401-404

ISBN
978-88-7587-526-8

Skup
8th International Congress on Coronary Artery Disease, ICCAD 2009

Mjesto i datum
Prag, Češka Republika, 11.10.2009. - 14.10.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
coronary artery disease; heart rate variability

Sažetak
Long-term measured ratio between low and high frequency (LF/HF ratio) components of heart rate variability (HRV) spectra fails to describe autonomic effect in most of cardiac patients. It seems that an increase in sympathetic activity decreases frequency of autonomic oscillations and shifts the centre frequency of HRV spectra toward very low frequencies. To test that hypothesis, LF/HF ratio was compared with ratio between very low and low frequency (VLF/LF ratio) in 690 patients with coronary artery disease. Patients with lower overall HRV and weaker vagal activity had lower LF/HF ratio and higher VLF/LF ratio. As a rule, the lower the HRV, the higher the VLF/LF ratio and the lower LF/HF ratio (p< 0.01), thus proving that the increase in sympathetic activity shifts the centre frequency of spectral components leftward.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

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