Title :
Interpolation over ectopic beats increases low frequency power in heart rate variability spectra
Author :
Birkett, C.L. ; Kienzle, M.G. ; Myers, G.A.
Author_Institution :
Iowa Univ., IA, USA
Abstract :
The authors compared spectra of heart rate variability (HRV) computed from 24 and 48 hour Holter tapes on 34 patients with congestive heart failure. Spectra on each patient were computed in two ways: (A) Segments with ectopic beats were included in the analysis. In this method, the intervals corresponding to ectopic beats and three beats following the last ectopic beat were computed by interpolation, and (B) Segments with ectopic beats were discarded. Spectral components of HRV in the low (0-0.05 Hz) and mid (0.05-0.15 Hz) frequency ranges were significantly (p<0.05) higher in method A than in method B. High (0.02-0.5 Hz) frequency components of the spectra were not significantly different between these two types of analysis
Keywords :
electrocardiography; interpolation; spectral analysis; 0 to 0.5 Hz; 24 hr; 48 hr; Holter tapes; congestive heart failure; heart rate variability spectra; interpolation over beats; low frequency power; Analysis of variance; Biomedical computing; Biomedical engineering; Cities and towns; Frequency; Heart rate variability; Interpolation; Power engineering and energy; Power engineering computing; Spline;
Conference_Titel :
Computers in Cardiology 1991, Proceedings.
Conference_Location :
Venice
Print_ISBN :
0-8186-2485-X
DOI :
10.1109/CIC.1991.169094
