Skip to main content

Evidence to Improve Care

Heavy Menstrual Bleeding

Care for Adults and Adolescents of Reproductive Age


14

Treatment of Anemia and Iron Deficiency

Patients with heavy menstrual bleeding who have been diagnosed with anemia or iron deficiency are treated with oral and/or intravenous iron.


Patients presenting with heavy menstrual bleeding are at an increased risk of developing anemia and iron deficiency due to the excessive blood loss they experience each month. Anemia and iron deficiency need to be treated to improve the patient’s mental and physical functioning and prevent the need for transfusion. In addition, dietary counselling may be considered.

All patients who have anemia (hemoglobin concentration below 120 g/L in a non-pregnant menstruating patient), a low mean cell volume, a low red blood cell count, and a clear history of bleeding should be treated with iron but do not need a ferritin test. However, if patients with anemia do not respond to oral iron, their ferritin should be tested. Patients who are not anemic but exhibit symptoms of iron deficiency, such as restless legs, fatigue, or hair loss, should also have a ferritin test. Ferritin levels below 15 mcg/L are diagnostic of iron deficiency and levels of 15 to 50 mcg/L are strongly suggestive of iron deficiency.

For Patients

If you have low iron or anemia (low red blood cell count), you should be advised to take iron pills. You may need iron in liquid form through a needle (intravenously).


For Clinicians

If your patient has iron deficiency anemia from heavy menstrual bleeding, treat them with iron: first oral, then intravenous. Use transfusion only if the patient is suffering from serious side effects such as hypotension, chest pain, syncope, or tachycardia.


For Health Services

Ensure systems, processes, and resources are in place such that patients with heavy menstrual bleeding have equal access to all options to correct their iron deficiency anemia. Ensure clinicians have access to the appropriate laboratory tests for their patients and to protocols to avoid unnecessary transfusions in this population.

Process Indicator

Percentage of patients with heavy menstrual bleeding diagnosed with anemia or iron deficiency who were treated with iron, by delivery method (oral or intravenous)

  • Denominator: number of patients with heavy menstrual bleeding diagnosed with anemia or iron deficiency

  • Numerator: number of patients in denominator treated with iron, by delivery method:

    • Oral

    • Intravenous

  • Data source: local data collection

Note: Each type of iron treatment should be calculated separately as well as the overall rate.


Percentage of patients with heavy menstrual bleeding diagnosed with anemia who had a blood transfusion

  • Denominator: number of patients with heavy menstrual bleeding who had anemia

  • Numerator: number of patients in the denominator who had a blood transfusion

  • Data sources: local data collection; for system level, Ontario Health Insurance Plan claims database, Discharge Abstract Database

Interventions to manage anemia and iron deficiency

Anemia and iron deficiency should be treated with oral or intravenous iron, in the following order:

  1. Oral iron for a minimum of 3 months to correct hemoglobin level and treat symptoms of iron deficiency (fatigue, cognitive impairment, exercise intolerance, restless legs)

  2. Intravenous iron for patients with severe anemia (hemoglobin concentration of less than 90 g/L), severe symptoms of anemia, patients unresponsive or intolerant to oral iron, or patients in need of rapid correction prior to an operative procedure

  3. Transfusion only if the patient is suffering from serious side effects such as hypotension, chest pain, syncope, or tachycardia. Transfusion is associated with adverse events including a 1-in-13 risk of alloimmunization that can complicate future pregnancies

Let’s make our health system healthier

Join Our Patient, Family and Public Advisors Program

Patients, families and the public are central to improving health quality.


Man smiling

Sign up for our newsletter

Are you passionate about quality health care for all Ontarians? Stay in-the-know about our newest programs, reports and news.

Health Quality Connect - Health Quality Ontario's newsletter - on an iPad and a cell phone