fetal blood sample


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Related to fetal blood sample: fetal scalp blood sampling

fetal blood sample

A small amount of blood drawn from a fetal scalp vein to assess acid-base status. The normal fetal blood pH level is 7.25. Levels between 7.20 and 7.24 reflect a preacidotic state; levels below 7.20 indicate acidosis and fetal jeopardy.
See also: sample
References in periodicals archive ?
cells from the fetal blood samples because expression of [epsilon]-globin mRNA has ceased or decreased to a very low amount by 17 weeks of gestation.
gamma] -Globin [epsilon] -Globin Whole CD71+ Whole CD71+ blood fraction blood fraction Nonpregnant women, n Positive 1 19 0 0 Negative 19 1 (a) 20 20 Total 20 20 20 20 Pregnant women (9-13 weeks of gestation), n Positive 0 10 0 0 Negative 14 4 (a) 14 14 Total 14 14 14 14 Fetal blood samples (17-20 weeks of gestation), n Positive 8 8 7 8 Negative 0 0 1 0 Total 8 8 8 8 [zeta] -Globin Whole CD71+ blood fraction Nonpregnant women, n Positive 0 3 Negative 20 17 (b) Total 20 20 Pregnant women (9-13 weeks of gestation), n Positive 0 5 Negative 14 9 (b) Total 14 14 Fetal blood samples (17-20 weeks of gestation), n Positive 4 8 Negative 4 0 Total 8 8 (a, b) Fisher's exact test: (a) P = 0.