Rodríguez NI, Navarro TX, Morín PM, San Martin MC, Mora HC, Zenteno AD

Language: Spanish
References: 20
Page: 477-486
PDF size: 116.80 Kb.

ABSTRACT

Introduction: chronic neuromuscular or pulmonary diseases in the child presupposes the occurence of sleep disordered breathing. Night studies are used to set the diagnosis of these disorders, but present evidence support the conduction of certain daytime studies (pulmonary function and respiratory muscular function) for their assesment.
Objective: to determine the correlation of the pulmonary function, the respiratory muscular function and the sleep studies in pediatric patients with neuromuscular diseases and chronic pulmonary damage.
Methods: correlational study in which the following spirometric parameters were measured: vital capacity, expiratory volume at the first second and forced expiratory flow from 25 % to 75 % as well as respiratory muscular strenght (Pimax and Pemax) and polysomnographic parameters (apnea/hypoapnea index, minimal saturation and average saturation at night). Nineteen children, 10 with neuromuscular diseases and 9 with chronic pulmonary damage, were studied.
Results: in the neuromuscular diseases, strong corelation was observed between Pimax percentage and minimal saturation at night (r= 0.8; p ‹ 0.005) whereas the rest of polysomnographic variables showed weak correlation with respiratory function variables. In the chronic pulmonary damage, there was slight correlation between the Pimax percentage and the minimal saturation at night (r= 0.6; p ‹ 0.08). The rest of the polygraphic variables showed no correlation with respiratory muscular function and spirometric variables.
Conclusions: the day predictive parameters of sleep disordered breathing are slightly to moderately correlated with the polysomnographic variables in children with chronic respiratory diseases. Just the inspiratory muscle strength was significantly correlated with minimal saturation at night in children with neuromuscular diseases.

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