Analysis of expiratory pattern for monitoring bronchial obstruction in school-age children.

R. Cutrera, S. I. Filtchev, R. Merolla, G. Willim, J. Haluszka, R. Ronchetti

Research output: Contribution to journalArticle

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Abstract

This study was designed to assess the validity of the percent of volume expired at tidal peak flow (dV/Vt) as an indicator of bronchial obstruction in school-age children. We analyzed 126 dV/Vt ratios and compared them with spirometric and plethysmographic results measured in 24 healthy (14 males) and 60 asthmatic (41 males) children; 42 of them underwent measurements before and after bronchial challenge with histamine. The two groups differed in resistance, forced expiratory volume in 1 sec (FEV1), and forced expiratory flows, as percents of predicted (FEV1: 94.6 +/- 2.4% in controls vs 86.7 +/- 1.6% in asthmatics; P less than 0.001). They did not differ in peak expiratory flow (PEF), forced vital capacity, functional residual capacity, measured by body plethysmography, and in dV/Vt. The dV/Vt was found to correlate with FEV1 (r = 0.58, P less than 0.001), PEF (r = 0.57, P less than 0.001), and other lung function parameters. Forty-two of the asthmatic children performed a bronchoprovocation histamine test. The fall of dV/Vt after histamine was significantly correlated (r = 0.61, P less than 0.001) with the variation in FEV1 and other lung function parameters. We conclude that dV/Vt is a good indicator of bronchial obstruction, as useful in school-age children as in adults and infants, with no need for the subject's cooperation.

Original languageEnglish
Pages (from-to)6-10
Number of pages5
JournalPediatric Pulmonology
Volume10
Issue number1
Publication statusPublished - 1991

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Forced Expiratory Volume
Histamine
Functional Residual Capacity
Lung
Plethysmography
Vital Capacity

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Pulmonary and Respiratory Medicine

Cite this

Cutrera, R., Filtchev, S. I., Merolla, R., Willim, G., Haluszka, J., & Ronchetti, R. (1991). Analysis of expiratory pattern for monitoring bronchial obstruction in school-age children. Pediatric Pulmonology, 10(1), 6-10.

Analysis of expiratory pattern for monitoring bronchial obstruction in school-age children. / Cutrera, R.; Filtchev, S. I.; Merolla, R.; Willim, G.; Haluszka, J.; Ronchetti, R.

In: Pediatric Pulmonology, Vol. 10, No. 1, 1991, p. 6-10.

Research output: Contribution to journalArticle

Cutrera, R, Filtchev, SI, Merolla, R, Willim, G, Haluszka, J & Ronchetti, R 1991, 'Analysis of expiratory pattern for monitoring bronchial obstruction in school-age children.', Pediatric Pulmonology, vol. 10, no. 1, pp. 6-10.
Cutrera, R. ; Filtchev, S. I. ; Merolla, R. ; Willim, G. ; Haluszka, J. ; Ronchetti, R. / Analysis of expiratory pattern for monitoring bronchial obstruction in school-age children. In: Pediatric Pulmonology. 1991 ; Vol. 10, No. 1. pp. 6-10.
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