title: Rib-cage-movement measurements as a potential new trigger signal in non-invasive mechanical ventilation.
abstract: Non-invasive ventilation performed through an oronasal mask is a standard in clinical and homecare mechanical ventilation. Besides all its advantages, inevitable leaks through the mask cause errors in the feedback information provided by the airflow sensor and, hence, patient-ventilator asynchrony with multiple negative consequences. Here we investigate a new way to provide a trigger to the ventilator. The method is based on the measurement of rib cage movement at the onset of inspiration and during breathing by fibre-optic sensors. In a series of simultaneous measurements by a long-period fibre grating sensor and pneumotachograph we provide the statistical evidence of the 200 ms lag of the pneumo with respect the fibre-optic signal. The lag is registered consistently across three independent delay metrics. Further, we discuss exceptions from this trend and identify the needed improvements to the proposed fibre-sensing scheme.
authors.forename: M
authors.initials: M
authors.lastname: Ivanovic
authors.forename: J
authors.initials: J
authors.lastname: Petrovic
authors.forename: M
authors.initials: M
authors.lastname: Miletic
authors.forename: A
authors.initials: A
authors.lastname: Danicic
authors.forename: B
authors.initials: B
authors.lastname: Bojovic
authors.forename: M
authors.initials: M
authors.lastname: Vukcevic
authors.forename: B
authors.initials: B
authors.lastname: Lazovic
authors.forename: Z
authors.initials: Z
authors.lastname: Gluvic
authors.forename: Lj
authors.initials: Lj
authors.lastname: Hadzievski
authors.forename: T
authors.initials: T
authors.lastname: Allsop
authors.forename: D J
authors.initials: DJ
authors.lastname: Webb
mesh_terms: D005336:Fiber Optic Technology; D006801:Humans; D012119:Respiration; D012121:Respiration, Artificial; D012272:Ribs