Concordance between the Piko - 1 portable device and pneumotachography in measuring PEF and FEV(1) in asthmatic children.
OBJECTIVE
To assess concordance in the measurement of peak expiratory flow (PEF) and forced expiratory volume ino ne second (FEV(1)) between the portable device Piko-1 (Ferraris) and a pneumotachograph.


METHODS
Forced spirometry (Master Screen Jaeger) was performed according to ATS/ERS norms, selecting the best value of three curves, and three measurements with the Piko-1 were recorded the recommendations of the manufacturer.


RESULTS
Eighty patients between 5-18 years of age were studied. Based on the Bland-Altman method, the mean differences obtained were 9.82 (95%Cl: 2.43-17.21) for PEF and 0.17 (95%CL: 0.12-0.21 for FEV(1). The intraclass correlation coefficient was 0.96 (p <0,001; 95%Cl: 0.93-0.97) for PEV(1) and 0.93 (p<0,0001; 95%Cl: 0.89-0.95) for PEF.


CONCLUSIONS
Piko-1 offers FEV(1) measurements close to those obtained with forced spirometry, thus allowing more exact patient assessment in home-based follow-up emergency services, or hospital wards.
Sección de Neumología Pediátrica, Hospital Universitario Materno Infantil de Canarias, Las Palmas de Gran Canaria, Spain. ajaf10@yahoo.es
A J
AJ
Aguilar-Fernández
J R
JR
Villa-Asensi
M
M
Castro-Codesal
E
E
Almería-Gil
M I
MI
González-Alvarez
F
F
Romero-Andújar
D000293:Adolescent; D001249:Asthma / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D019719:Diagnostic Equipment; D004864:Equipment and Supplies; D005069:Evaluation Studies as Topic; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods; D010366:Peak Expiratory Flow Rate; D015203:Reproducibility of Results