Age structure and dynamics of the morbidity rate of respiratory and autonomous nervous system diseases in children living in conditions of the aerogenous impact of chemical factors of technogenic origin (cohort study)

Abstract

There was executed a 6-years cohort study of 65 children divided into an observation group comprising of 45 cases residing in the conditions of atmosphere air contaminated by a complex of chemical substances of technogenic origin (suspended solids, phenol, formaldehyde), and a comparative group (20 children) from the area with beneficiary sanitary-hygienic conditions. In conditions of the impact of these chemical substances in children reaching of the age of 7-10 years the prevalence of allergic rhinitis and vegetative disorders was established to increase by 1.2-1.9 times, and the risk of getting sick with bronchial asthma is growing by more than twice; by 11-14 years the risk of spreading of allergic rhinitis is additionally growing by 1.4 times against the background of the decreasing in the probability of forming of chronic lympho-proliferative processes of nasopharynx and secondary immunodeficiency. The frequency of the development of vegetative dysfunctions increases twice over the 6 years period in children residing in conditions of persistent aerogenous combined impact of suspended solids, phenol and formaldehyde.