Final answer:
If the uterus is not in the midline after delivery, retained placental fragments should be suspected as they can cause postpartum hemorrhage by preventing proper uterine contractions and involution.
Step-by-step explanation:
If the uterus is not in the midline after delivery, one should suspect retained placental fragments. After the delivery of the placenta and associated membranes, known as the afterbirth, the myometrium continues to contract to shear the placenta from the uterine wall and reduce blood loss. However, if fragments of the placenta remain, it can lead to a postpartum hemorrhage. The postpartum period marks the time when the body begins to return to a non-pregnant state, facilitating uterine contractions and involution. It is crucial for the obstetrician to check that the expelled placenta and fetal membranes are intact. If not, retained fragments may prevent the uterus from properly contracting, cause bleeding, and displace the uterus from its expected position. Breastfeeding is known to facilitate the process of involution and help the abdominal organs return to their pre-pregnancy state.