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Journal Articles European Journal of Pediatrics Year : 2015

Sweat test practice in pediatric pulmonology after introduction of cystic fibrosis newborn screening

Abstract

The influence of the generalization of cystic fibrosis newborn screening (CFNBS) in France on sweat test (ST) prescription is unknown. In this French retrospective, descriptive, and multicenter study, we studied the indications, number, methods, and results of STs prescribed by a pediatric pulmonologist in children who had a negative CFNBS and an ST for respiratory symptoms in 2012. We included 502 children with 523 STs, performed with four different methods. The main indication was asthma (71.3 %), then chronic cough (52.4 %), atypical lower airway infections (42.2 %), and bronchiectasis (7 %). Four children had a diagnosis of CF (0.8 %), all presenting with chronic productive cough and recurrent respiratory infections. CONCLUSION: Asthma is the most frequent indication of ST in our cohort. Because of the systematic CFNBS in France, some prescriptions should be avoided, particularly in case of severe or moderate asthma with no other associated symptom. Moreover, methods of STs often do not follow the guidelines and need standardization. WHAT IS KNOWN: • Newborn screening (NBS) has become the most frequent circumstance of the diagnosis of cystic fibrosis (CF) in France after its generalization. • The prescription of sweat test (ST) in children with respiratory symptoms who already had a negative NBS has not been studied. WHAT IS NEW: • In children with a negative CF NBS referred to a university hospital for respiratory diseases, despite important variations of ST methods, only 4 children among 502 have been diagnosed as CF. • Despite recommendations, ST prescription should be avoided in children with moderate to severe asthma and no other associated symptom.
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Dates and versions

hal-01713921 , version 1 (21-02-2018)

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Céline Grimaldi, François Brémont, Michèle Berlioz-Baudoin, Jacques Brouard, Harriet Corvol, et al.. Sweat test practice in pediatric pulmonology after introduction of cystic fibrosis newborn screening. European Journal of Pediatrics, 2015, 174 (12), pp.1613 - 1620. ⟨10.1007/s00431-015-2579-4⟩. ⟨hal-01713921⟩
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