This issue of Emergency Medicine Clinics, Guest Edited by Dr. Joelle Borhart and Dr. Rebecca Bavolek, is dedicated to Obstetric and Gynecologic Emergencies. Topics include: Nonpregnant vaginal bleeding; Sexually transmitted infections; Genital complaints at extremes of age; Acute pelvic pain; Complications in early pregnancy; Complications of assisted reproductive technology; Vaginal bleeding in late pregnancy; Precipitous delivery; Postpartum emergencies; Hypertensive disorders of pregnancy; Trauma in pregnancy; Cardiovascular emergencies in pregnancy; and Resuscitation in pregnancy.