RT Book, Section A1 Hoffman, Barbara L. A1 Schorge, John O. A1 Bradshaw, Karen D. A1 Halvorson, Lisa M. A1 Schaffer, Joseph I. A1 Corton, Marlene M. SR Print(0) ID 1125285710 T1 Abnormal Uterine Bleeding T2 Williams Gynecology, 3e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 978-0-07-184908-1 LK obgyn.mhmedical.com/content.aspx?aid=1125285710 RD 2024/03/29 AB Abnormal uterine bleeding (AUB) may display several patterns, and descriptive terms have been updated to standardize nomenclature (Munro, 2011). For example, heavy menstrual bleeding (HMB) (formerly menorrhagia) defines prolonged or heavy cyclic menstruation. Objectively, menses lasting longer than 7 days or exceeding 80 mL of blood loss are determining values. The term intermenstrual bleeding replaces metrorrhagia. Frequently, women may complain of both patterns. The term breakthrough bleeding is a more informal term for intermenstrual bleeding that accompanies hormone administration. In some women, there is diminished flow or shortening of menses, hypomenorrhea. Women normally menstruate every 28 days ± 7 days. Cycles with intervals longer than 35 days describe a state of oligomenorrhea. The term withdrawal bleeding refers to the predictable bleeding that results from an abrupt decline in progesterone levels. Finally, postcoital bleeding is that prompted by vaginal intercourse.