What amount of menstrual flow is indicative of menorrhagia?

• A. Less than 20 ml
• B. 30 ml or less
• C. 90 ml or more
• D. 15 - 30 ml

Answer: (C)

Menorrhagia is defined as menstrual bleeding that is excessively heavy or prolonged. The standard measure for diagnosing menorrhagia often includes a menstrual blood loss of 80 milliliters or more per cycle, but in this context, identifying an amount consistent with menorrhagia leads to recognizing that 90 milliliters or more clearly indicates an excessive flow. This amount reflects a significant deviation from typical menstrual blood loss, which is generally around 30-40 milliliters.

Understanding these figures is important in clinical practice, as identifying menorrhagia is essential for managing underlying disorders or treatment needs. The other amounts listed, such as those below 90 milliliters, do not meet the threshold commonly associated with menorrhagia and would typically fall within the range considered normal or slightly heavier than average menstrual flow. Thus, focusing on a blood loss of 90 milliliters or more is critical in accurately diagnosing and managing patients with suspected menorrhagia.