Measurement of human fetoplacental blood volume in erythroblastosis fetalis. 1987

K H Nicolaides, and W H Clewell, and C H Rodeck

The fetoplacental blood volume of the human fetus was measured with the change in hematocrit at the time of intravascular transfusion for severe erythroblastosis. A total of 121 measurements were made between 18 and 31 weeks' gestation. The volume ranged from 117 ml/kg at 18 weeks to 93.1 ml/kg at 31 weeks. These values compare closely with those reported for the sheep fetus and, when they are extrapolated to term, are similar to the blood volume of human newborns plus the residual placental blood volume.

UI MeSH Term Description Entries
D010925 Placental Function Tests Methods used for the assessment of placental function. Fetoplacental Function Tests,Fetoplacental Function Test,Function Test, Fetoplacental,Function Test, Placental,Function Tests, Fetoplacental,Function Tests, Placental,Placental Function Test,Test, Fetoplacental Function,Test, Placental Function,Tests, Fetoplacental Function,Tests, Placental Function
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D001805 Blood Transfusion, Intrauterine In utero transfusion of BLOOD into the FETUS for the treatment of FETAL DISEASES, such as fetal erythroblastosis (ERYTHROBLASTOSIS, FETAL). Fetal Transfusion,Intrauterine Transfusion,Blood Transfusions, Intrauterine,Fetal Transfusions,Intrauterine Blood Transfusion,Intrauterine Blood Transfusions,Intrauterine Transfusions,Transfusion, Fetal,Transfusion, Intrauterine,Transfusion, Intrauterine Blood,Transfusions, Fetal,Transfusions, Intrauterine,Transfusions, Intrauterine Blood
D001810 Blood Volume Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME. Blood Volumes,Volume, Blood,Volumes, Blood
D001811 Blood Volume Determination Method for determining the circulating blood volume by introducing a known quantity of foreign substance into the blood and determining its concentration some minutes later when thorough mixing has occurred. From these two values the blood volume can be calculated by dividing the quantity of injected material by its concentration in the blood at the time of uniform mixing. Generally expressed as cubic centimeters or liters per kilogram of body weight. Blood Volume Determinations,Determination, Blood Volume,Determinations, Blood Volume,Volume Determination, Blood,Volume Determinations, Blood
D004899 Erythroblastosis, Fetal A condition characterized by the abnormal presence of ERYTHROBLASTS in the circulation of the FETUS or NEWBORNS. It is a disorder due to BLOOD GROUP INCOMPATIBILITY, such as the maternal alloimmunization by fetal antigen RH FACTORS leading to HEMOLYSIS of ERYTHROCYTES, hemolytic anemia (ANEMIA, HEMOLYTIC), general edema (HYDROPS FETALIS), and SEVERE JAUNDICE IN NEWBORN. Hemolytic Disease of Newborn,Erythroblastosis Fetalis,Erythroblastoses, Fetal,Erythroblastosis Fetali,Fetal Erythroblastoses,Fetal Erythroblastosis,Fetali, Erythroblastosis,Fetalis, Erythroblastosis,Newborn Hemolytic Disease,Newborn Hemolytic Diseases
D005260 Female Females
D005865 Gestational Age The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization. It is also estimated to begin from fertilization, estrus, coitus, or artificial insemination. Embryologic Age,Fetal Maturity, Chronologic,Chronologic Fetal Maturity,Fetal Age,Maturity, Chronologic Fetal,Age, Embryologic,Age, Fetal,Age, Gestational,Ages, Embryologic,Ages, Fetal,Ages, Gestational,Embryologic Ages,Fetal Ages,Gestational Ages
D006400 Hematocrit The volume of packed RED BLOOD CELLS in a blood specimen. The volume is measured by centrifugation in a tube with graduated markings, or with automated blood cell counters. It is an indicator of erythrocyte status in disease. For example, ANEMIA shows a low value; POLYCYTHEMIA, a high value. Erythrocyte Volume, Packed,Packed Red-Cell Volume,Erythrocyte Volumes, Packed,Hematocrits,Packed Erythrocyte Volume,Packed Erythrocyte Volumes,Packed Red Cell Volume,Packed Red-Cell Volumes,Red-Cell Volume, Packed,Red-Cell Volumes, Packed,Volume, Packed Erythrocyte,Volume, Packed Red-Cell,Volumes, Packed Erythrocyte,Volumes, Packed Red-Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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