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Query: UMLS:C0025362 (mental retardation)
 15,878 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Reasons for the high adolescent birthrate in the U.S., medical, psychological, and social repercussions of teenage pregnancy, and facts and myths about sex education and contraception for young people are discussed. About 30% of U.S. women under 20 become pregnant outside marriage, and many more are pregnant when they marry. The reasons for the high pregnancy rates in young people include recent early menarch, which accounts for 94% fertility in 17.5-year-olds, better health, and ignorance about contraception and basic facts about reproduction. Pregnant adolescents risk toxemia, anemia, puerperal morbidity, prematurity, neonatal mortality, and congenital defects such as mental retardation in the baby. They face family alienation, loss of educational and employment opportunities, forced marriage, and high suicide rates in addition to the trials of puberty. Many girls believe that their fertile period is during menses, that pills are dangerous, that they are not fertile. Studies have shown that sex education can lower repeat pregnancies 67%. Recent research has negated the belief that many young women desire pregnancy unconsciously. Current information shows that supplying contraception will not encourage young people to begin having intercourse. Most sex education courses in the U.S. are given after the average teenagers become active sexually. It is believed that contraception should be provided universally for young people, and that parental authorization of contraception would probably mend family ties, certainly better than would unwanted pregnancy.
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PMID:[Social and psychological aspects of contraception in adolescents]. 98 31

There are substantial differences in the family history, the history of pregnancy and delivery and the course in the first week of life of patients with congenital malformations and patients with developmental or intrauterine growth retardation. Patients with malformations demonstrate a high degree of relatives with malformations; in contrast problems in pregnancy, delivery and postnatal development are less pronounced. Mothers of children with intrauterine growth retardation present with a history of early abortion, prematurity, bleeding, toxemia of pregnancy and tobacco abuse. These children present a great number of problems during the first week of life. Patients with mental retardation present with a history of previous abortion prematurity and tobacco and alcohol abuse during pregnancy. These children also present with significant morbidity in the first week of life. The history of these children discloses an unusual number of siblings with death in early life.
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PMID:[Comparison of patients with congenital abnormalities, intrauterine growth retardation and developmental delay in relation to the pre- and perinatal period]. 281 33

Pregnancy, delivery, and neonatal records of mentally defective chil dren born in Baltimore, Maryland, between 1935 and 1952 were compared wi th records of a control group to determine the effects of complications during these 3 phases on eventual mental disorders. The mental defectives had a greater amount of recorded complications of pregnancy and delivery, prematurity, and abnormal neonatal experiences. Nonmechanical pregnancy complications, i.e., bleeding or toxemia, seemed more significant in this association than the mechanical factors of delivery. Neither duration of labor nor operative procedures performed at delivery was related with the development of mental deficiency. The associations that did show were not as strong for nonwhites. Various reasons for this fact are considered. It seems possible that reproductive casualty can occur during pregnancy, delivery, and the neonatal period. In its most serious form, it causes spontaneous abortion, stillbirth, neonatal deaths. Lesser brain damage during these periods will cause, in the following order, cerebral palsy, epilepsy, mental retardation, and behavioral disorders.
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PMID:Association of maternal and fetal factors with development of mental deficiency. 1. Abnormalities in the prenatal and paranatal periods. 1225 79

Although associated factors are important for the occurrence of neural damage in neonatal hypoglycemia, they are not fully understood. Sixty patients with neonatal hypoglycemia were studied through a review of their medical records in Tottori University Hospital. The patients were classified into two main groups: Group I were patients who had mental retardation, developmental delay, cerebral palsy or epilepsy while Group II were those who were normal in their follow-up. Group I consisted of 12 patients while Group II consisted of 48 patients. The median gestational age was 38 weeks in Group I and 36.7 weeks in Group II. The frequencies of small for gestational age were similar in both groups. Blood glucose levels less than 15 mg/dl were more frequent in Group 1 (50.0%) than in Group 2 (14.6%) (P=0.015). Duration of hypoglycemia was longer in Group I (median, 14 h) than in Group II (median, 1.75 h) (p<0.001). The following factors were more frequent in Group I than in Group II: toxemia (33.3% and 8.3%, p=0.043), fetal distress (58.3% and 14.5%, p=0.004), an Apgar score of less than 5 at 1 min (33.3% and 6.4%, p=0.025), neonatal seizure (53.8% and 4.3%, p<0.001) and pathological jaundice (41.7% and 6.4%, p=0.006). Cranial CT or MRI revealed cerebral lesions in 8 of the 9 Group I patients in follow-up examinations. This study indicates that severe and prolonged neonatal hypoglycemia can cause cerebral lesions and other perinatal risk factors, such as hypoxia, neonatal seizure and pathological jaundice, would exacerbate hypoglycemic brain injuries.
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PMID:Associated factors in neonatal hypoglycemic brain injury. 1905 41

Neonatal hypoglycemia (HG) can cause neurologic damage, epilepsy, mental retardation, behavioral and personality disorders and death. The longest the HG lasts and the greatest the glucose nadir the consequences are more pronounced. Comorbidities are rather important in development of neurological damage. Hypoxemia and ischemia can cause permanent brain damage. Small for gestational age (SGA), large for gestational age (LGA), intrauterine growth restriction, gestational age bellow the 37th week, low Apgar score, sepsis, children whose mothers have toxemia, diabetes or chorioamnionitis are all newborns with increased HG risk. Comparing 34 patients with NH and 34 children without NH with similar GA, BW, BL, the Apgar score, we found statistically significant differences in motor and mental development using the Griffith scale. Children with neonatal HG fared significantly worse than those without neonatal HG. Therefore, CBG measurements and early recognition of neonatal HG is of significant importance in preventing motor and mental damage in children. A larger and well-balanced cohort of patients followed for a longer period is also necessary to clarify and discern in detail the importance of neonatal HG and other perinatal factors in neurodevelopmental damage.
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PMID:Neuro Developmental Consequences of Neonatal Hypoglycemia. 3301 93