Which nutrient is required in greater quantities for a preterm infant compared to a full-term infant?

For preterm infants, the requirement for proteins is significantly higher compared to full-term infants. This is primarily due to the fact that preterm infants are still undergoing rapid growth and development, which proteins are essential for. Proteins play a crucial role in building tissues, including muscle and organs, which is vital for preterm infants who may not have had the full gestational period to accumulate and develop reserves.

During the later stages of pregnancy, the developing fetus receives a larger portion of protein through the placenta, which helps in proper growth. Therefore, preterm infants need more protein to compensate for this deficit and to promote optimal growth and development outside the womb. Adequate protein intake supports the synthesis of enzymes, hormones, and antibodies, all of which are essential for the infant's overall health and immune function.

While other nutrients are also important, preterm infants specifically face increased protein needs due to their higher metabolic rates and the need for tissue repair and growth that occurs at this stage. This understanding highlights the critical nature of adequate protein intake in the nutrition of preterm infants.