Active phase begins at 6cm (new WHO guidelines). Friedman curve.

Preeclampsia = HTN + Proteinuria (or end organ damage). Eclampsia = + Seizures. Give MgSO4.

PPH most common cause = Uterine atony. APH painful = Abruption. APH painless = Previa.

Cervical cancer = HPV 16, 18. Ovarian = CA-125, mostly epithelial.