title: Tidal volume measurements in infants: Opto-electronic plethysmography versus pneumotachograph.
abstract: Tidal breathing measurements by Opto-Electronic Plethysmography (OEP) has been reported for infants limited to protocols with two chest wall compartments. Standard protocol for the analysis of adults, with three compartments of chest wall, has been unavailable for analysis of infants. We aimed to study the agreement of simultaneous measurements of tidal volume by OEP (VT,OEP ) and a heated pneumotachograph (PNT) (VT,PNT ) performed during sleeping in 20 infants (gestational age 35.1 ± 4.6 weeks) at 3-4 months postconceptual age with a three compartment protocol. From PNT and OEP measurements, tidal volume corrected (VT,PNT ) for ambient conditions were calculated with a total number of 200 breaths. The two methods were in good agreement with tidal volume mean difference of 0.02 ml and limit of agreement -4.11 to 4.08 ml (95%CI), no relationship was found between differences and means of OEP and PNT measurements. Pulmonary rib cage, abdominal rib cage and abdomen contributed by 12.4 ± 9.7%, 5.2 ± 5.1%, and 82.4 ± 11.4% to VT,OEP , respectively. The OEP experimental protocol based on 52 markers and a three-compartment model of the chest wall could be used in spontaneously sleeping infants. Pediatr Pulmonol. 2016;51:850-857. © 2016 Wiley Periodicals, Inc.
authors.affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.|Instituto de Medicina Integral Prof. Fernando Figueira, Recife, Pernambuco, Brazil.
authors.forename: Cyda Maria Albuquerque
authors.initials: CM
authors.lastname: Reinaux
authors.affiliation: Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Aliverti
authors.affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
authors.forename: Lívia Gabriely Melo
authors.initials: LG
authors.lastname: da Silva
authors.affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
authors.forename: Rafael Justino
authors.initials: RJ
authors.lastname: da Silva
authors.affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
authors.forename: Juliane Neves
authors.initials: JN
authors.lastname: Gonçalves
authors.affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
authors.forename: Jessica Brito
authors.initials: JB
authors.lastname: Noronha
authors.affiliation: Instituto de Medicina Integral Prof. Fernando Figueira, Recife, Pernambuco, Brazil.
authors.forename: José Eulálio Cabral
authors.initials: JE
authors.lastname: Filho
authors.affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
authors.forename: Armèle Dornelas
authors.initials: AD
authors.lastname: de Andrade
authors.affiliation: Instituto de Medicina Integral Prof. Fernando Figueira, Recife, Pernambuco, Brazil.
authors.forename: Murilo Carlos
authors.initials: MC
authors.lastname: de Amorim Britto
mesh_terms: D000005:Abdomen / Q000502:physiology; D005260:Female; D005865:Gestational Age; D006801:Humans; D007223:Infant; D008297:Male; D010991:Plethysmography / Q000379:methods*; D012129:Respiratory Function Tests / Q000295:instrumentation* / Q000379:methods*; D012189:Retrospective Studies; D000070602:Rib Cage / Q000502:physiology; D012890:Sleep; D035441:Thoracic Wall / Q000502:physiology; D013990:Tidal Volume
keywords: chest wall; infant; opto-electronic plethysmography; tidal breathing; tidal volume