fetal hemoglobin

(redirected from Fetal blood)
Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to Fetal blood: fetal hemoglobin

he·mo·glo·bin F

[MIM*142200]
normal fetal Hb (Hb F) of molecular formula α2Aγ2F, which is the major Hb component during intrauterine life, decreasing rapidly during infancy to reach a concentration of less than 0.5% in normal children and adults; the concentration of Hb F is increased in some hemoglobinopathies and in some cases of hypoplastic anemia, pernicious anemia, and leukemia; Hb F has a weaker affinity for 2,3-bisphosphoglycerate than does Hb A. More than 50 mutant variants of the γ chain have been reported.
Synonym(s): fetal hemoglobin

fetal hemoglobin

n.
The predominant form of hemoglobin in fetuses and newborn infants, present in small amounts in adults but often elevated in adults with certain forms of anemia and other disorders.

fetal hemoglobin

hemoglobin F, the major hemoglobin present in the blood of a fetus and neonate. Hemoglobin F is present in only trace amounts in the blood of normal adults.

fetal hemoglobin

Hemoglobin F An immature Hb composed of 2 α and 2 γ chains that usually disappears in the neonatal period. See Hereditary persistence of fetal hemoglobin.
References in periodicals archive ?
In a letter to Sophie's parents in January 2015, Ken Bremner, Chief Executive of City Hospitals Sunderland NHS Foundation Trust, said: "It was not appropriate for fetal blood sampling to have been performed on a baby at 32 weeks gestation and that sampling caused an injury which caused Sophie's brain injury.
Of fetal hypoxic lesions, mild erythroblastosis of fetal blood (Figure 6, A) is regarded as the only reliable (and, therefore, the best) evidence of chronic, in utero hypoxia; however, fetal erythroblasts can also be released from their stores in response to acute hypoxia.
Prenatal diagnosis for hydrops fetalis can also be conducted using fetal blood obtained by cordocentesis or amniocentesis (13).
If these two types of diagnostic technology have been effective in reducing practice variation, there would be little variation left when STAN and fetal blood analysis were introduced.
1) and other important chemical differences (higher lactate) compared with healthy fetal blood (21).
Additionally, Doppler assessment of blood flow measurement - specifically of tricuspid regurgitation and of flow through the ductus venosus, a small fetal blood vessel that leads to the heart - can provide valuable information about fetal cardiac status and can easily be done in the context of the first-trimester ultrasound evaluation.
PBDEs and their metabolites have been detected in fetal blood, liver, and placenta, and in human milk.
Fetal blood receives oxygen diffusing across the placenta from maternal circulation.
Alcohol that is not broken down by the liver remains in the maternal blood stream and is circulated via the placenta to the fetal blood stream (Rosett 1984).
The fluid around the fetus or fetal blood can be examined to determine the presence of infection.
The book includes a chapter on comparative hemorheology among species, and a chapter on the neonatal and fetal blood rheology.
In one study of pregnant women, the average woman had 286 chemicals in her fetal blood.