Detection of central and obstructive sleep apnea in children using pulse transit time

Author

Pagani, J. ; Villa, MP ; Calcagnini, G. ; Lombardozzi, E. ; Censi, F. ; Poli, S. ; Bartolini, P. ; Barbaro, V. ; Ronchetti, R.

Author_Institution

Dept. of Pediatrics, S. Andrea Univ. of Rome La Sapienza, Italy

fYear

2002

fDate

22-25 Sept. 2002

Firstpage

529

Lastpage

532

Abstract

The aim of this study was to validate the use of pulse transit time (PTT) as a method to monitor sleep apnea in children. PTT was estimated as the interval between the ECGR-wave and the point at which the pulse wave at the finger reached 50% amplitude. First, we assessed changes in the PTT during breathing against known resistances in 15 awake children; resistance was applied with a modified nose and mouth two-way nonrebreathing face mask, having the inhalation valve port fitted with drilled plastic cylinders of various diameters. Second, we analyzed 20 events of obstructive apnea and 90 events of central apnea during sleep in 10 children. Our data showed good correlation between the inspiratory effort and PTT oscillation amplitude. In addition, PTT oscillation amplitude tuned out to successfully discriminate central from obstructive apnea.

Keywords

electrocardiography; medical signal processing; paediatrics; patient monitoring; pneumodynamics; sleep; awake children; breathing; central sleep apnea detection; children; drilled plastic cylinders; finger; inhalation valve port; inspiratory effort; modified nose and mouth two-way nonrebreathing face mask; monitoring; obstructive sleep apnea detection; pulse transit time; pulse wave; resistances; Biomedical monitoring; Delay estimation; Electrical resistance measurement; Electrocardiography; Fingers; Pediatrics; Pressure measurement; Protocols; Sleep apnea; Valves;

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.2002.1166826

Filename

1166826