During pregnancy, a woman's body undergoes massive changes to support the growing baby. The total volume of blood in her body increases by up to fifty percent. However, the liquid part of the blood, known as plasma, increases much faster than the actual red blood cells that carry oxygen. This natural difference creates a condition called physiological anemia or hemodilution. Midwives must recognize this normal adaptation so they do not panic over mild drops in hemoglobin levels. Even though it is expected, severe drops still threaten the health of both mother and child because the blood cannot carry enough oxygen to vital organs.
Iron deficiency remains the leading cause of anemia among pregnant women attending antenatal clinics in Nigeria. Poor dietary intake of bioavailable iron, coupled with high nutritional demands from the fetus, quickly exhausts maternal stores. Beyond iron, other vital nutrients play crucial roles in blood production:
Anemia develops gradually, allowing many women to adapt to low hemoglobin levels until the condition becomes severe. When symptoms finally appear, they reflect poor oxygen delivery to body tissues. Midwives should look out for visible signs during routine physical checks.
Common complaints include persistent tiredness, generalized body weakness, and shortness of breath during mild activity like climbing stairs. Expectant mothers may also report dizziness, palpitations, and headaches. On physical examination, the midwife will notice pallor in the conjunctivae, nail beds, and palm creases. In advanced cases, swelling of the lower legs and an increased resting heart rate may be observed.
Early detection saves lives, making routine screening a cornerstone of antenatal care. Every woman must have her hemoglobin or packed cell volume checked at her first booking visit and repeated at key gestational milestones.
Failing to treat severe anemia exposes both mother and baby to grave dangers. The heart of the pregnant woman works extra hard to pump oxygen-poor blood, which can lead to congestive cardiac failure. During labor, an anemic uterus contracts poorly, increasing the risk of postpartum hemorrhage. Furthermore, an anemic mother has low resistance to infection and handles blood loss very poorly if it occurs.
For the baby, chronic lack of oxygen inside the womb can cause intrauterine growth restriction, low birth weight, premature birth, and even stillbirth. Newborns may also start life with depleted iron stores, setting off a cycle of vulnerability.
Treating anemia involves correcting the root cause and restoring hemoglobin levels to a safe range before delivery. Oral iron supplements, usually combined with folic acid, form the standard frontline treatment for mild to moderate cases. Midwives must counsel patients on side effects like dark stools and mild stomach upset to ensure compliance.
When oral therapy fails, or when severe anemia is discovered late in the third trimester, parenteral iron (given through intramuscular or intravenous routes) or a blood transfusion may be necessary. Antimalarial prophylaxis and deworming medications are also administered according to national protocols to eliminate concurrent causes of blood loss.
Prevention remains superior to cure in the management of nutritional anemia. Midwives play a vital role in educating pregnant women during antenatal health talks. Dietary counseling should focus on locally available, affordable food items rich in iron and vitamins. Foods like dark green leafy vegetables, beans, lentils, organ meats, and fish should be encouraged.
Midwives must also teach patients how to enhance iron absorption—for example, taking iron with vitamin C sources like citrus fruits or tomatoes while avoiding tea or coffee right after meals, as these beverages inhibit iron uptake. Distributing routine preventive supplements and promoting insecticide-treated bed nets complete the comprehensive package of care.