Definitions of terms used to capture heavy or otherwise abnormal menstrual bleeding in the literature
| Term . | Definition . |
|---|---|
| Heavy menstrual bleeding (HMB)/menorrhagia | Menstrual blood loss (MBL) of >80 mL/cycle or Pictorial Blood Loss Assessment Chart score >100 |
| Abnormal uterine bleeding (AUB) | Menstrual bleeding of abnormal quantity, duration, or schedule. Includes heavy bleeding; excessively frequent, infrequent, or irregular bleeding; and intermenstrual bleeding. |
| Clinically relevant non-major bleeding (CRMNB) | Uterine bleeding that requires medical intervention by a health care professional, leads to hospitalization or increased level of care, or prompts a face-to-face evaluation |
| Major bleeding (MB) | Uterine bleeding that is fatal or causes a fall in hemoglobin level of ≥20 g/L (≥2 g/dL) or leading to transfusion of ≥2 units of whole blood or red cells |
| Term . | Definition . |
|---|---|
| Heavy menstrual bleeding (HMB)/menorrhagia | Menstrual blood loss (MBL) of >80 mL/cycle or Pictorial Blood Loss Assessment Chart score >100 |
| Abnormal uterine bleeding (AUB) | Menstrual bleeding of abnormal quantity, duration, or schedule. Includes heavy bleeding; excessively frequent, infrequent, or irregular bleeding; and intermenstrual bleeding. |
| Clinically relevant non-major bleeding (CRMNB) | Uterine bleeding that requires medical intervention by a health care professional, leads to hospitalization or increased level of care, or prompts a face-to-face evaluation |
| Major bleeding (MB) | Uterine bleeding that is fatal or causes a fall in hemoglobin level of ≥20 g/L (≥2 g/dL) or leading to transfusion of ≥2 units of whole blood or red cells |