PR and PP ECG interval variation during obstructive apnea and hypopnea

Author

Shouldice, R. ; Ward, S. ; O´Brien, L.M. ; O´Brien, C. ; Redmond, S. ; Gozal, D. ; Heneghan, C.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. Dublin, Ireland

fYear

2004

fDate

17-18 April 2004

Firstpage

100

Lastpage

101

Abstract

A method to elucidate PP and PR electrocardiogram variability during periods of obstructive apnea based on averaged interval length is considered. R and P peaks are extracted from 28 pediatric subjects´ ECG signal using a Hilbert transform based technique. Visual analysis of phasic changes during obstructive events indicate that 21 of 28 of subjects exhibit opposite changes in PP and PR interval length after apnea onset. This suggests that changes in PR interval are primarily refractory influenced. In subjects with severe obstructive apnea, apneas are also associated with prolonged cyclical variations in PP interval (and to a lesser extent in PR).

Keywords

Hilbert transforms; electrocardiography; medical signal processing; paediatrics; sleep; Hilbert transform based technique; PP ECG interval length; PR ECG interval length; hypopnea; obstructive apnea; pediatric subjects; phasic changes; visual analysis; Abdomen; Delay effects; Educational institutions; Electrocardiography; Fluctuations; Frequency; Heart rate; Hospitals; Pediatrics; Sleep;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 2004. Proceedings of the IEEE 30th Annual Northeast

Print_ISBN

0-7803-8285-4

Type

conf

DOI

10.1109/NEBC.2004.1300012

Filename

1300012