Reference values for airway resistance in newborns, infants and preschoolers from a Latin American population.
Respirology
; 17(4): 667-73, 2012 May.
Article
en En
| MEDLINE
| ID: mdl-22372678
ABSTRACT
BACKGROUND AND OBJECTIVE:
Several studies have determined reference values for airway resistance measured by the interrupter technique (Rint) in paediatric populations, but only one has been done on Latin American children, and no studies have been performed on Mexican children. Moreover, these previous studies mostly included children aged 3 years and older; therefore, information regarding Rint reference values for newborns and infants is scarce.METHODS:
Rint measurements were performed on preschool children attending eight kindergartens (Group 1) and also on sedated newborns, infants and preschool children admitted to a tertiary-level paediatric hospital due to non-cardiopulmonary disorders (Group 2).RESULTS:
In both groups, Rint values were inversely associated with age, weight and height, but the strongest association was with height. The linear regression equation for Group 1 (n = 209, height 86-129 cm) was Rint = 2.153 - 0.012 × height (cm) (standard deviation of residuals 0.181 kPa/L/s). The linear regression equation for Group 2 (n = 55, height 52-113 cm) was Rint = 4.575 - 0.035 × height (cm) (standard deviation of residuals 0.567 kPa/L/s). Girls tended to have slightly higher Rint values than boys, a difference that diminished with increasing height.CONCLUSIONS:
In this study, Rint reference values applicable to Mexican children were determined, and these values are probably also applicable to other paediatric populations with similar Spanish-Amerindian ancestries. There was an inverse relationship between Rint and height, with relatively large between-subject variability.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Resistencia de las Vías Respiratorias
Tipo de estudio:
Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Child
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Child, preschool
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Female
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Humans
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Infant
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Male
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Newborn
País/Región como asunto:
Mexico
Idioma:
En
Revista:
Respirology
Año:
2012
Tipo del documento:
Article