Optimality Approach and Evidence-Based Practices in Perinatal CareThe term of optimality is focuses on the best possible results and is used in the sense of the most appropriate. It aims to achieve optimal healthcare services and to reach the best / most appropriate in health outcomes. The term of perinatal optimality is to achieve maximum results with minimum intervention for the pregnant, fetus / newborn and the woman's family during pregnancy, delivery and postpartum period. Every woman has the right to receive optimal care throughout the perinatal period. The use of evidence-based practices by perinatology nurses while providing care to the woman during the perinatal period has a key role in the healthy and comfortable life of the mother, fetus / newborn and woman's family, and the best health of the mother and baby. In addition, nurses support the philosophy that advocates the least intervention to the woman's physiology and natural process in perinatal care practices. The optimality approach is also based on this philosophy. The use of evidence-based practices is also the most basic way to ensure optimal health care. This review aims at examining the optimal approach and evidence-based care practices in perinatal care practices and to reveal its contribution to the nursing profession and literature.