Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0029713 (immaturity)
 4,335 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Although oral contraception is the fertility control method most frequently selected by US adolescents, factors such as inconsistent usage, payment inability, and cognitive-emotional immaturity lead half of these young women to discontinue pill use in the first year. Norplant and Depo-Provera--long-acting hormonal methods that do not require daily compliance--offer the potential to reduce the number of unintended pregnancies among adolescents; however, no data exist on the use of either method in this population. Before Norplant and Depo-Provera can be unconditionally recommended for use by adolescents, numerous research questions must be addressed. For example, it must be determined whether the pregnancy rates and side effects (especially on bone deposition) are the same in adolescents as in adult women. The possibility that adolescents who use long-acting contraception will abandon condom use due to the low risk of pregnancy--and thus place themselves at increased risk of sexually transmitted diseases--must be assessed. For Norplant, the medical-legal issues and responsibilities regarding insertion and removal must be clarified. More research is needed on the impact of partner perceptions on method continuation. It must be determined whether the role of health care providers in ongoing reproductive health promotion will be diminished by the need for fewer clinic visits. Also in need of attention are the demographic factors associated with use of these methods and the impact of their initial high expense on accessibility. If the continuation rates among adolescents of Norplant and Depo-Provera do not exceed that for the pill, the invasiveness and high cost of these methods may outweigh their benefits.
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PMID:The use of Norplant and Depo Provera in adolescents. 766 81

Features of behaviour of mothers of singleton perinatal deaths collected over the 12-month period from 1 September 1986 to 31 August 1987 were compared with 9919 mothers of singleton infants born in September and October 1986 and surviving the first week of life, as part of the Jamaican Perinatal Mortality Survey. For perinatal deaths as a whole, and in the presence of maternal age and social and environmental features, logistic regression analyses showed that the following were independently related with higher risk of mortality: (1) deliberately trying to get pregnant; (2) ever having used Depo Provera; (3) not drinking alcohol in pregnancy; and (4) smoking cigarettes in pregnancy. There were no associations with coital frequency, ever using the contraceptive pill or smoking ganja (cannabis). Deaths were classified using the Wigglesworth scheme, and separate analyses carried out for the three major groups--antepartum fetal deaths, deaths from immaturity and deaths from intrapartum asphyxia. Antepartum fetal deaths were at increased risk if (1) mothers were deliberately trying to get pregnant or (2) they had ever used Depo Provera. Deaths from immaturity were not associated with any health behaviour variables. Deaths from intrapartum asphyxia were more likely if (1) the mother was deliberately trying to get pregnant or (2) she had never used an intrauterine contraceptive device.
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PMID:Does maternal behaviour influence the risk of perinatal death in Jamaica? 807 1