Modern obstetrics is featured by various diagnostic and therapeutic measures directed at safeguarding or improving the health of the pregnant woman and the fetus. This chapter reviews contemporary prenatal screening tests and diagnostic tests that are commonly conducted in early pregnancy. The impact of the screening and diagnostic testing as well as population intervention is discussed. As pregnancy advances, complications may emerge. When necessary, early delivery is performed. Reasons for early delivery are reviewed in this chapter. The trend of delivery intervention (i.e., labor induction and caesarean delivery) and indications for the interventions are presented. The effects of excessive use of these interventions on maternal and perinatal outcomes are discussed.
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