What is the primary concern with hemoglobin levels falling below 11 g/dL during pregnancy?

The primary concern with hemoglobin levels falling below 11 g/dL during pregnancy is related to sufficient oxygen delivery. Hemoglobin is responsible for transporting oxygen from the lungs to the body's tissues, including the growing fetus. A decrease in hemoglobin levels indicates a potential reduction in the carrying capacity for oxygen, which can lead to hypoxia or insufficient oxygenation for both the mother and the fetus.

Inadequate oxygen delivery can adversely affect fetal growth and development, as the fetus relies on maternal blood for oxygen. This concern is particularly critical during pregnancy when oxygen demands are elevated due to the increased metabolic needs of both the mother and the developing fetus. Thus, maintaining hemoglobin levels above 11 g/dL is essential to ensure that adequate oxygen is available for the health and development of the fetus, as well as to support the mother's overall well-being.