This document discusses postpartum hemorrhage and puerperal infection. Postpartum hemorrhage is defined as blood loss over 500ml after delivery, with late hemorrhage occurring after 24 hours. Severe hemorrhage can rarely lead to Sheehan's syndrome, characterized by lactation failure and hormonal deficiencies. Common causes of hemorrhage include uterine atony, lacerations, retained placenta, and coagulation problems. Puerperal infection refers to any bacterial infection of the genital tract after delivery, with common pathogens including various streptococcus and E. coli bacteria. Clinical manifestations may include fever, uterine tenderness, and infections of the endometrium, adnexa