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Cord arterial blood gas analysis (ABGA) results are used as diagnostic criteria for hypoxic-ischemic encephalopathy in newborns with suspected perinatal asphyxia. This study evaluated the effect of cord ABGA lactate level on the long-term neurodevelopment of newborns without any clinical signs of perinatal asphyxia. This clinical observation study was designed among term babies born between 2018 and 2019 in our unit. Cases with a 5-min Apgar score &lt;7 and signs of fetal distress in their antenatal follow-up were excluded. The cases ( n  = 1438) were divided into two groups those with high cord lactate levels (above 5 mmol/L,  n  = 92) and those with low lactate levels (below 2 mmol/L,  n  = 255). An Ages and Stages Questionnaire, Third Edition (ASQ-3) developmental screening questionnaire was sent to all parents. Patients with a chronological age between 24 and 42 months and for whom the parents fulfilled the questionnaire (low lactate group,  n  = 29, and high lactate group,  n  = 45) were evaluated. No difference was observed between the two groups in terms of demographic characteristics such as age ( p  = .1669), male gender ( p  = .906), mother’s working situation ( p  = .948), mother’s education level ( p  = .828), father’s education level ( p  = .507), and family’s total income ( p  = .642). Mean ACQ-3 developmental screening test scores were significantly lower in the high lactate group compared to the low lactate group concerning; fine motor (40 vs. 60,  p  = .001), problem-solving (50 vs. 60,  p  = .002), and personal social development (45 vs. 60,  p  = .003). No difference was observed in terms of communication and gross motor total scores. In general practice, routine cord ABGA is not generally recommended for patients with normal Apgar scores and no suspected hypoxia. However, in this study, we observed that cases with a normal 5-min Apgar score, no suspected perinatal asphyxia, and a cord lactate value of ≥5 fell behind their peers when evaluated with the ACQ-3 developmental screening questionnaire.

Long-term neurodevelopmental effects of exclusively high cord lactate levels in term newborn