INTRODUCTION: @entity4297 are the most common @entity4670 . @entity4297 occur with a frequency of 3-12/1000 births. A special group is constituted by @entity1 with @entity1699 because their treatment is extremely complex, requiring three-stage surgery and the involvement of various specialists. MATERIAL AND METHODS: We analysed 100 @entity1 with @entity4297 in the form of @entity1699 ( @entity1699 ). They were compared with a control group of 100 newborns without structural @entity299 . The @entity1 's parents were asked to fill out a questionnaire consisting of 10 simple questions. It had been constructed in consultation with a psychologist in order not to offend the feelings of the parents affected by the illness of their offspring. RESULTS: @entity4297 were present in the family medical histories of 16 @entity1699 @entity1 and 11 healthy @entity1 (p = 0.4). @entity74 were present in the family medical histories of 13 @entity1699 @entity1 and 15 healthy @entity1 (p = 0.73). In the @entity1699 group, the mothers smoked cigarettes or were exposed to @entity286 smoke in 32% of cases; in the control group, this proportion amounted to 23% (p = 0.76). CONCLUSIONS: The study found no relationship between the occurrence of @entity1699 in @entity1 and the parents' age, the presence of @entity74 , or @entity299 in the family medical histories.

The impact of environmental factors on the occurrence of XXXX in the form of @entity1699 .

@entity1 :: ('9606', 'Species') :: ['children', 'infants'] @entity286 :: ('4097', 'Species') :: ['tobacco'] @entity4670 :: ('MESH:D009358', 'Disease') :: ['abnormalities in neonatal age'] @entity1699 :: ('MESH:D018636', 'Disease') :: ['hypoplastic left heart syndrome', 'HLHS'] @entity74 :: ('MESH:D030342', 'Disease') :: ['genetic disorders', 'Genetic disorders'] @entity299 :: ('MESH:D006331', 'Disease') :: ['heart defects'] @entity4297 :: ('MESH:D006330', 'Disease') :: ['Congenital heart defects', 'congenital heart defects']
@entity299 :: (MESH:D006331,Disease) :: ['congenital heart disease']
