Biomaterial Database

Spontaneous abortion rates, gravidity and neural tube defects. 1978

W H James

Kline and her co-workers [20, 21] suggest that spontaneous abortions show no overall gravidity effect. However, spontaneous abortions seem to show a negative gravidity effect in some sibships (those containing an infant affected by anencephaly or spina bifida) [22]. It is inferred that there is a heterogeneity among spontaneous abortion sibships, and that there are other sibships in which spontaneous abortions show a positive gravidity effect (perhaps as a result of e.g. iso-immunization).

UI	MeSH Term	Description	Entries
D008423	Maternal Age	The age of the mother in PREGNANCY.	Age, Maternal,Ages, Maternal,Maternal Ages
D010298	Parity	The number of offspring a female has borne. It is contrasted with GRAVIDITY, which refers to the number of pregnancies, regardless of outcome.	Multiparity,Nulliparity,Primiparity,Parity Progression Ratio,Parity Progression Ratios,Ratio, Parity Progression,Ratios, Parity Progression
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
D011379	Prognosis	A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.	Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D001722	Birth Order	The sequence in which children are born into the family.	First Birth,Birth Orders,Birth, First,Births, First,First Births
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000022	Abortion, Spontaneous	Expulsion of the product of FERTILIZATION before completing the term of GESTATION and without deliberate interference.	Abortion, Tubal,Early Pregnancy Loss,Miscarriage,Spontaneous Abortion,Abortions, Spontaneous,Abortions, Tubal,Early Pregnancy Losses,Loss, Early Pregnancy,Losses, Early Pregnancy,Miscarriages,Pregnancy Loss, Early,Pregnancy Losses, Early,Spontaneous Abortions,Tubal Abortion,Tubal Abortions
D000757	Anencephaly	A malformation of the nervous system caused by failure of the anterior neuropore to close. Infants are born with intact spinal cords, cerebellums, and brainstems, but lack formation of neural structures above this level. The skull is only partially formed but the eyes are usually normal. This condition may be associated with folate deficiency. Affected infants are only capable of primitive (brain stem) reflexes and usually do not survive for more than two weeks. (From Menkes, Textbook of Child Neurology, 5th ed, p247)	Aprosencephaly,Absence of Brain, Congenital,Anencephalia,Anencephalus,Congenital Absence of Brain,Hemicranial Anencephaly,Incomplete Anencephaly,Partial Anencephaly,Anencephalias,Anencephalies, Partial,Anencephaly, Hemicranial,Anencephaly, Incomplete,Anencephaly, Partial,Aprosencephalies,Brain Congenital Absence,Partial Anencephalies
D016136	Spina Bifida Occulta	A common congenital midline defect of fusion of the vertebral arch without protrusion of the spinal cord or meninges. The lesion is also covered by skin. L5 and S1 are the most common vertebrae involved. The condition may be associated with an overlying area of hyperpigmented skin, a dermal sinus, or an abnormal patch of hair. The majority of individuals with this malformation are asymptomatic although there is an increased incidence of tethered cord syndrome and lumbar SPONDYLOSIS. (From Joynt, Clinical Neurology, 1992, Ch55, p34)	Dermal Sinus,Spinal Bifida, Closed,Occult Spina Bifida,Closed Spinal Bifida,Sinus, Dermal,Spina Bifida, Occult