The average blood loss in normal menstrual cycle is
A. 200 to 250 ml
B. 50 to 100 ml
C. 100 to 150ml
D. 150 to 200ml
Correct Answer: B. 50 to 100 ml
Explanation
The average blood loss in a normal menstrual cycle is typically around 30–40 milliliters (ml) per cycle, though it can range from 20 ml to 80 ml in healthy women.
Here’s a breakdown of the options you might see in multiple-choice questions:
• A. 200 to 250 ml → This is excessive, usually considered menorrhagia (abnormally heavy menstrual bleeding).
• B. 50 to 100 ml → Slightly higher than average; still may be within normal limits for some women.
• C. 100 to 150 ml → More than normal; often considered heavy menstrual bleeding.
• D. 150 to 200 ml → Clearly excessive; indicates pathological bleeding.
Normal menstrual blood loss: ~30–40 ml per cycle.
Other Options Details
Here’s a detailed explanation of the options regarding blood loss in a normal menstrual cycle:
Normal menstrual blood loss refers to the amount of blood and endometrial tissue shed during menstruation, typically over 3–7 days. Average blood loss is usually around 30–80 ml, though it can vary slightly depending on the individual. Let’s examine the options you provided:
A. 200 to 250 ml
Explanation: This is much higher than normal. Blood loss of this magnitude is considered menorrhagia (excessive menstrual bleeding) and may indicate underlying problems such as hormonal imbalance, fibroids, or clotting disorders.
Assessment: Not normal.
B. 50 to 100 ml
• Explanation: This is closely aligned with the upper end of normal. Most references consider 30–80 ml as the typical range, so 50–100 ml can be seen as acceptable in some cases, but anything consistently near 100 ml may require monitoring.
• Assessment: Normal or borderline high.
C. 100 to 150 ml
• Explanation: This is higher than normal, suggesting menorrhagia if consistent. Blood loss in this range often causes anemia over time.
Assessment: Abnormal.
D. 150 to 200 ml
• Explanation: This is significantly above normal and considered heavy menstrual bleeding. Immediate investigation is usually recommended to rule out medical conditions.
Assessment: Abnormal.
Conclusion:
The normal menstrual blood loss is closest to 50–100 ml per cycle. Anything consistently above 100 ml is considered excessive.
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Writer: Vandita Singh, Lucknow (GS India Nursing Group)