Verifying fetal scalp lactate testing results as measured by a portable lactate analyzer


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Resumo

Aim. To determine the reference values of lactate concentration in the blood obtained from the fetal presenting part and measured by a portable lactate analyzer. Materials and methods. A prospective study included 92 pregnant women at delivery who underwent fetal scalp blood sampling to determine the lactate level and umbilical artery sampling to assess the acid-base balance. Results. An increase in scalp lactate concentration was associated with an increase in umbilical artery pCO2, base deficit, and a decrease in blood pH. Lactate concentration >4.9 mmol/l was associated with a higher rate of an emergency delivery. However, the fetal condition was over-diagnosed in 74.5% of cases. Increasing the cutoff threshold of scalp lactate to 5.9 mmol/L allows a 22.8% reduction in unwarranted surgical delivery. Conclusion. Normal and pre-acidosis fetal scalp lactate concentrations measured by the portable lactate analyzer (Lactate Scout) were 44.8 and 4.9-5.8 mmol/L, respectively. Fetal scalp lactate concentration >5.9 mmol/L was associated with a high risk of acidosis requiring emergency delivery.

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Sobre autores

Andrey Prikhod'ko

V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology of Minzdrav of Russia

Email: a_prikhodko@oparina4.ru
Ph.D., Physician at the 1st Maternity Department, Teaching Assistant at the Department of Obstetrics and Gynecology, Researcher at the Department of Innovative Technologies, Institute of Obstetrics

Oleg Tysyachnyi

V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology of Minzdrav of Russia

Email: olti23@mail.ru
Ph.D., Researcher at the Department of Innovative Technologies, Institute of Obstetrics

Andrey Romanov

V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology of Minzdrav of Russia

Email: romanov1553@yandex.ru
Ph.D. Student, Specialist at the R&D Department

Oleg Baev

V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology of Minzdrav of Russia; I.M. Sechenov First Moscow State Medical University of Minzdrav of Russia (Sechenov University)

Email: o_baev@oparina4.ru
Dr.Med.Sci., Professor, Head of the 1st Maternity Department; Professor at the Department of Obstetrics, Gynecology, Perinatology and Reproductology

Bibliografia

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