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Of the 171 patients enrolled in the study,155 were evaluated.After adjustment for the presence of absence of a ventricular septal defect,the infants assigned to circulatory arrest,as compared with those assigned to low-flow bypass,had a lower mean score on the Psychomotor Development Index of the Bayley Scales of Infant Development(a 6.5-point deficit,P=0. 01)and a higher proportion had scores |
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