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abortion (AB) | expulsion of the products of conception before the fetus is viable (able to live outside the uterus) |
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spontaneous abortion (SAB) | miscarriage; naturally occurring expulsion of the products of conception |
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habitual abortion | spontaneous abortion occurring in three or more consecutive pregnancies |
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incomplete abortion | incomplete expulsion of the products of conception |
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missed abortion | death of a fetus or embryo within the uterus that is not naturally expelled after death |
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threatened abortion | bleeding with the threat of miscarriage |
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cephalopelvic disproportion (CPD) | condition preventing normal delivery through the birth canal; either the baby's head is too large or the birth canal is too small |
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eclampsia | true toxemia of pregnancy characterized by high blood pressure, albuminuria, edema of the legs and feet, severe headaches, dizziness, convulsions, and coma |
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preeclampsia | toxemia of pregnancy characterized by high blood pressure, albuminuria, edema of the legs and feet, and puffiness of the face, without convulsion or coma |
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ectopic pregnancy | implantation of the fertilized egg outside the uterine cavity, often in the tube or ovary, or, rarely, in the abdominal cavity |
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erythroblastosis fetalis | disorder that results from the incompatibility of a fetus with an Rh-positive blood factor and a mother with an Rh-negative blood factor, causing red blood cell destruction in the fetus; this condition necessitates a blood transfusion to save the fetus |
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Rh factor | presence, or lack, of antigens on the surface of red blood cells that may cause a reaction between the blood of the mother and the fetus, resulting in fetal anemia, which causes erythroblastosis fetalis |
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Rh positiver-āch poz′i-tiv | presence of antigens |
Rh negative | absence of antigens |
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hyperemesis gravidarum | severe nausea and vomiting in pregnancy that can cause severe dehydration in the mother and fetus (emesis = vomit) |
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meconium aspiration | fetal aspiration of amniotic fluid containing meconium |
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placenta previa | displaced attachment of the placenta in the lower region of the uterine cavity |
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abruptio placentae | premature detachment of a normally situated placenta |