Sniff nasal inspiratory pressure. Reference values in Caucasian children

Détails

ID Serval
serval:BIB_EED2ACD577FD
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Sniff nasal inspiratory pressure. Reference values in Caucasian children
Périodique
American Journal of Respiratory and Critical Care Medicine
Auteur⸱e⸱s
Stefanutti  D., Fitting  J. W.
ISSN
1073-449X (Print)
Statut éditorial
Publié
Date de publication
01/1999
Volume
159
Numéro
1
Pages
107-11
Notes
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Jan
Résumé
Like in adults, normal values of maximal inspiratory pressure (PImax) and maximal expiratory pressure (PEmax) span a large range in children, making interpretation of low values difficult. Recently, sniff nasal inspiratory pressure (Pnsn) was developed as a new noninvasive test of inspiratory muscle strength. In healthy adults, Pnsn is most often higher than PImax. The aim of this study was to establish reference values of Pnsn in children and to compare them with PImax. A group of 180 unselected healthy children age 6 to 17 yr was studied in a school setting. All had a forced vital capacity (FVC) > 80% of predicted and a ratio of forced expiratory volume in one second/forced vital capacity (FEV1/ FVC) > 85% of predicted. All maneuvers were performed in the sitting position. The Pnsn was measured using a catheter occluding one nostril during maximal sniffs performed through the contralateral nostril from FRC. The PImax was measured from FRC and residual volume, and PEmax from FRC and total lung capacity. All children were able to perform the Pnsn maneuver easily. Pnsn was 104 +/- 26 cm H2O in boys and 93 +/- 23 cm H2O in girls (p < 0.005). These values were similar to those previously measured in healthy adults. Pnsn correlated with age, weight, and height in boys, but not in girls. In both sexes, Pnsn was higher than PImax measured at the same lung volume (FRC) (p < 0. 0001). Pnsn was >= PImaxFRC in 73 of 93 boys and 79 of 87 girls. We conclude that Pnsn can be easily used to assess inspiratory muscle strength in children age 6 yr or more, providing values higher than PImax. Normal values are independent of age in girls, and can be predicted from age by a first-degree equation in boys. Being easy and noninvasive, Pnsn may prove useful to assess inspiratory muscle strength in children with neuromuscular disorders.
Mots-clé
Adolescent Aging/physiology Body Height/physiology Body Weight/physiology Child *European Continental Ancestry Group Female Humans Male Methods Nasal Cavity/*physiology Pressure Reference Values *Respiration Respiratory Muscles/*physiology Sex Characteristics
Pubmed
Web of science
Création de la notice
25/01/2008 10:43
Dernière modification de la notice
20/08/2019 17:16
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