Objective To analyze the risk factors of recurrent wheezing in infants, and to evaluate its correlation with tidal breathing pulmonary function. Methods Infants with “recurrent wheezing” over three times hospitalized in the Department of Pediatrics of the First Hospital of Wuhan were enrolled in observation group from March 2015 to March 2017.Meanwhile, healthy children in outpatient were selected as control group.Questionnaires were used to analyze risk factors of recurrent wheezing.Tidal breathing pulmonary function was tested at admission (acute phase) and discharge (remission phase).And respiratory rate(RR), TV/kg、Ti/Te、TPTEF/TE、VPEF/VE of two groups were tested. Results 1) Eczema (OR=5.86,95%CI:1.72~22.06), secondhand smoking (OR=2.16, 95%CI:1.36~5.29), parents′ history of asthma or allergic rhinitis (OR=7.83, 95%CI:2.56~30.31), city residence(OR=3.12,95%CI:1.17~12.46) and dwelling adjacent to road (OR=2.05,95%CI:1.08~3.03) were the independent risk factors for recurrent wheezing.2) Compared with the control group, RR was significantly faster in both acute stage and wheezing stage of wheezing group (both P<0.05); RR in wheezing remission stage was significantly lower than that in acute wheezing stage(P<0.05).TPTEF/TE and VPEF/VE were significantly lower in both acute wheezing stage and wheezing remission stage than those in control group (both P<0.01).After positive treatment, TPTEF/TE and VPEF/VE in wheezing remission stage were significantly higher than those in acute wheezing stage (both P<0.05). Conclusions Eczema, secondhand smoking, parents′ history of asthma or allergic rhinitis, city residence and dwelling adjacent to road are the independent risk factors for recurrent wheezing.Tidal breathing analysis of pulmonary function may be a reliable and Objective indicator for clinical diagnosis of asthma in infants.
Key words
recurrent wheezing /
infants /
risk factors /
tidal breathing pulmonary function
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