Early detection of essential hypertension by time-frequency analysis

Author

Davrath, LR ; Goren, Y. ; Pinhas, I. ; David, D. ; Akselrod, S.

Author_Institution

Tel Aviv Univ., Israel

fYear

2002

fDate

22-25 Sept. 2002

Firstpage

445

Lastpage

448

Abstract

Hypertension affects approximately 25% of adults in industrialized countries and contributes significantly to morbidity and mortality from cardiovascular diseases. Young adult, normotensive offspring of one hypertensive parent (KHT, n = 12) and normotensive offspring of two normotensive parents (YN, n = 14) participated ECG, continuous blood pressure, and respiration were recorded Time-frequency decomposition of these signals was performed by a Continuous Wavelet Transform. During change in posture (CP), KHT demonstrated a significantly greater increase in the low frequency fluctuations in heart rate (HR) than YN, indicating enhanced sympathetic involvement in the HR response to CP. Upon recovery from Handgrip, vagal reactivation was more sluggish in KHT These results indicate possible malfunctions in both branches of autonomic control in individuals at increased risk of hypertension.

Keywords

electrocardiography; haemodynamics; medical signal processing; time-frequency analysis; wavelet transforms; ECG; blood pressure; cardiovascular diseases; continuous wavelet transform; enhanced sympathetic involvement; handgrip; heart rate; hypertension; morbidity; mortality; normotensive offspring; posture; respiration; time-frequency decomposition; vagal reactivation; Blood pressure; Cardiovascular diseases; Continuous wavelet transforms; Electrocardiography; Fluctuations; Heart rate; Hypertension; Resonant frequency; Time frequency analysis; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 2002

ISSN

0276-6547

Print_ISBN

0-7803-7735-4

Type

conf

DOI

10.1109/CIC.2002.1166805

Filename

1166805