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Do insults to the developing lung increase the incidence of wheezing in infants
Insights
Perinatal factors like meconium aspiration syndrome and lower respiratory infections significantly contribute to the
Area of Science:
- Pediatrics
- Neonatology
- Respiratory Medicine
Background:
- The 'wheezy baby syndrome' is a common condition in infants, with its etiology not fully understood.
- Perinatal and early infantile factors are suspected contributors to the development of wheezy illness in infants.
Purpose of the Study:
- To investigate the role of perinatal and early infantile factors in the development of 'wheezy baby syndrome'.
- To compare the incidence of neonatal problems and lower respiratory tract infections between infants with wheezy syndrome and controls.
Main Methods:
- A retrospective case-control study involving 150 infants with wheezy baby syndrome and 150 control infants.
- Infants were recruited from outpatient departments, with available perinatal and postnatal records.
- Comparison focused on neonatal issues, including meconium aspiration syndrome, and previous lower respiratory tract infections.
Main Results:
- 40% of cases had a history of meconium aspiration syndrome, versus 2.6% in controls.
- 26.6% of cases had experienced at least one lower respiratory tract infection, compared to 5.3% in controls.
- Transient tachypnea and atopy history showed no significant association with wheezy baby syndrome.
Conclusions:
- Meconium aspiration syndrome and lower respiratory tract infections are significant etiological factors in wheezy baby syndrome.
- The study suggests these perinatal events are more critical than inherited atopy in the pathogenesis.
Abstract:
This study reports on the possible role of perinatal and early infantile factors in the aetiology of the 'wheezy baby syndrome'. Over a 2 year period we recruited 150 infants from the outpatients department who had a typical wheezing attack, with chest X-ray showing only hyperinflation and non-specific increased markings, and who had been born in hospital with available perinatal and postnatal records. One hundred and fifty control infants were also recruited. A retrospective study was then undertaken comparing the two groups of infants for the incidence of neonatal problems and the incidence of previous lower respiratory tract infections. The results showed that 40 per cent of cases had previously had meconium aspiration syndrome compared with only 2.6 per cent of controls, and that 26.6 per cent of cases had previously had at least one lower respiratory tract infection compared with 5.3 per cent of controls. Other factors, including the incidence of transient tachypnea, and personal and family history of atopy, showed no significant trends. Meconium aspiration syndrome and lower respiratory tract infections are important aetiological factors in the pathogenesis of 'wheezy baby syndrome', rather than inheritance of atopic diathesis.
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