Teen pregnancy is a social problem not resolved in developing and some developed countries. Adolescent fecundity has become the most exact bio-demographic and health indicator of development. In developing countries that are expected to follow the sexual behaviour patterns of developed countries, without offering the levels of education and services for adolescents, the consequences will be adolescent fecundity and STI prevalence increase. The ignorance about sexuality and reproduction both in parents, teachers and adolescents increases the early initiation of coital relations and of unwanted pregnancies. Extreme poverty and being the son or daughter of an adolescent mother are risk factors of repeating the early pregnancy model. The application of predictive risk criteria in pregnant adolescents to facilitate the rational use of Health Services to diminish the maternal and perinatal mortality is discussed as well as the social factors associated with adolescent pregnancy as socioeconomic levels, structure - types and characteristics of the family, early leaving school, schooling after delivery, female employment, lack of sexual education, parental and family attitudes in different periods of adolescent pregnancy, adolescent decisions on pregnancy and children, unstable partner relationship and adoption as an option. Social consequences are analyzed as: incomplete education, more numerous families, difficulties in maternal role, abandonment by the partner, fewer possibilities of having a stable, qualified and well-paid job, greater difficulty in improving their socioeconomic level and less probability of social advancement, lack of protection of the recognition of the child. Finally, based on evidence, some measures that can reduce adverse consequences on adolescent mothers, fathers and their children are suggested.

Resumen: Se describe la objeción de conciencia en la práctica clínica como un derecho de los profesionales, fundamentado principalmente en la libertad de conciencia. Se realiza revisión bibliográfica abarcando los últimos diez años para conocer su real significado, magnitud y trascendencia. Se concluye que debe plantearse en situaciones específicas, como una excepción, con prudencia, compatibilizando los derechos de todos los involucrados, alcanzando el equilibrio en nuestras decisiones, permitiendo que una sociedad donde conviven personas con diferentes valores y creencias aspiren en conjunto al bien común, condición necesaria para fortalecer la democracia.Palabras clave: conciencia, objeción de conciencia, bioética, ética médica Conscience objection in clinical practiceAbstract: Conscience objection is described in clinical practice as a professional right, based mainly in freedom of conscience. A bibliographical review of last ten years is carried out to know the real meaning, extent and transcendence. The conclusion is that it must raise in specific situations, as an exception, with prudence, harmonizing the rights of all participating, reaching equilibrium in decision making, allowing that a society where persons with different values and beliefs live together aspire overall to common good, necessary condition to strengthen democracy Key words: conscience, conscience objection, bioethics, medical ethics A objeção de consciência na prática clínicaResumo: Descreve-se a objeção de consciência na prática clínica como um direito dos profissionais fundamentado principalmente na liberdade de consciência. Realiza-se uma revisão bibliográfica abarcando os últimos 10 anos para conhecer seu real significado, magnitude e transcendência. Conclui que se deve apresentá-la em situações específicas, como uma exceção, com prudência, compatibilizando os direitos de todos os envolvidos, alcançando o equilíbrio em nossas decisões, permitindo que uma sociedade onde convivem pessoas com diferentes valores e crenças aspirem em conjunto o bem comum, condição necessária para fortalecer a democracia.