Effects Of Indoor Environment On Acute Upper Respiratory Tract Infections And Asthmatic Diseases In Children

Objective:to study the effects of indoor environment on respiratory diseases,pulmonary function and fractional exhaled nitric oxide(FeNO)in children,so as to provide reference for family environment management.Methods:retrospective analysis was used to select children with wheezing diseases who were treated in our hospital from March 2019 to August 2019.The differences of respiratory infection rate,times of upper respiratory tract infection,respiratory cost,incidence of wheezing bronchitis,pulmonary function and FeNO in different indoor environmental factors were compared.Results:1.The upper respiratory tract infection rate of daily secondhand smoke exposure was higher than that of no secondhand smoke exposure,and the difference was statistically significant(P<0.05);Daily secondhand smoke exposure is an indoor environmental risk factor for the diagnosis of acute upper respiratory tract infections;The number of upper respiratory tract infections associated with daily secondhand smoke exposure was greater than that associated with non-daily secondhand smoke exposure,and the difference was statistically significant(P<0.05);FVC,FEV1 and MEF50 in the daily secondhand smoke exposure group were all lower than those in the non-daily secondhand smoke exposure group,and the differences were statistically significant(P<0.05);PEF and MEF75 in the daily exposure group were lower than those in the non-exposure group,and the differences were statistically significant(P<0.05);2.The cost of respiratory system treatment with floor heating is less than that without heating,and the difference was statistically significant(P<0.05);3.The TPTEF/TE(%)And VPEF/VE(%)with fresh air system were both higher than those without fresh air system,and the differences were statistically significant(P<0.05);4.The FVC and FEV1 of the group using lampblack were greater than those without,and the difference was statistically significant(P<0.05).Conclusion:1.Daily secondhand smoke exposure is a risk factor for acute upper respiratory tract infection;2.Second-hand smoke exposure,the use of fresh air system and the use of range hoods all have effects on lung function;3.It cannot be proved that secondhand smoke exposure is a risk factor for the re-diagnosis of asthmatic bronchitis in wheezing children,and the effect of indoor environment on FeNO needs to be further studied.