Conditions favoring the use of intravenous iron for anemia therapy in pregnancy
| Preexisting anemia (moderate to severe) |
| No effect of oral iron (low resorption) |
| Side effects of oral iron (poor compliance) |
| Refusal of blood transfusion |
| Limited time until delivery or planned operation |
| Coexisting risks (eg, placenta previa, Jehovah's Witness) |
| Preoperative and postoperative phases |
| Preexisting anemia (moderate to severe) |
| No effect of oral iron (low resorption) |
| Side effects of oral iron (poor compliance) |
| Refusal of blood transfusion |
| Limited time until delivery or planned operation |
| Coexisting risks (eg, placenta previa, Jehovah's Witness) |
| Preoperative and postoperative phases |