1. The approach: 5 basic steps (double-lined boxes). Start with initial resuscitation and ABCs. Then rule out ectopic pregnancy using pelvic ultrasound and HCG level (dashed boxes). If ultrasound shows IUP and no concern for ectopic, then evaluate for SAB based on os and POC on exam (dashed boxes). Final steps are to consider RhoGAM and other benign causes for vaginal bleeding.