Accuracy of tidal breathing measurement of FloRight compared to an ultrasonic flowmeter in infants.

Petrus, Nicole; Thamrin, Cindy; Fuchs, Oliver; Frey, Urs (2015). Accuracy of tidal breathing measurement of FloRight compared to an ultrasonic flowmeter in infants. Pediatric pulmonology, 50(4), pp. 380-388. Wiley-Blackwell 10.1002/ppul.23006

[img] Text
ppul23006.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (193kB) | Request a copy


Monitoring breathing pattern is especially relevant in infants with lung disease. Recently, a vest-based inductive plethysmograph system (FloRight®) has been developed for tidal breathing measurement in infants. We investigated the accuracy of tidal breathing flow volume loop (TBFVL) measurements in healthy term-born infants and infants with lung disease by the vest-based system in comparison to an ultrasonic flowmeter (USFM) with a face mask. We also investigated whether the system discriminates between healthy infants and those with lung disease.


Floright® measures changes in thoracoabdominal volume during tidal breathing through magnetic field changes generated by current-carrying conductor coils in an elastic vest. Simultaneous TBFVL measurements by the vest-based system and the USFM were performed at 44 weeks corrected postmenstrual age during quiet unsedated sleep. TBFVL parameters derived by both techniques and within both groups were compared.


We included 19 healthy infants and 18 infants with lung disease. Tidal volume per body weight derived by the vest-based system was significantly lower with a mean difference (95% CI) of -1.33 ml/kg (-1.73; -0.92), P < 0.001. Respiratory rate and ratio of time to peak tidal expiratory flow over total expiratory time (tPTEF/tE) did not differ between the two techniques. Both systems were able to discriminate between healthy infants and those with lung disease using tPTEF/tE.


FloRight® accurately measures time indices and may discriminate between healthy infants and those with lung disease, but demonstrates differences in tidal volume measurements. It may be better suited to monitor breathing pattern than for TBFVL measurements.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Pneumologie (Pädiatrie)
04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine

UniBE Contributor:

Petrus, Nicole, Thamrin, Cindy, Fuchs, Oliver


600 Technology > 610 Medicine & health








Anette van Dorland

Date Deposited:

11 Apr 2016 09:15

Last Modified:

05 Dec 2022 14:54

Publisher DOI:


PubMed ID:


Uncontrolled Keywords:

infants; lung disease; lung function; validation




Actions (login required)

Edit item Edit item
Provide Feedback