What change in movement quality is observed in preterm neonates compared to term neonates?

In preterm neonates, the quality of movement is often characterized by a lack of coordination and fluidity, which can differ significantly from that observed in term neonates. Rapid alternating movements, such as those seen in older infants and children, are typically not observed in preterm infants because their neuromuscular systems are still maturing. Preterm neonates may show more jerky or uncoordinated movements due to their underdeveloped muscle tone and control.

In term neonates, movements become more organized and coordinated, reflecting a more advanced level of neurological development. Thus, rapid alternating movements, indicative of neural maturation and motor skills, are generally not present in preterm infants. They instead exhibit limited movement patterns that are less refined than those of term infants.

The other options highlight aspects of neonate behavior and physiology that do not accurately capture the differences in movement quality between preterm and term infants. For instance, increased muscle tone is often associated with term infants who have more developed neuromuscular control. Sustained postures are typically more developed in term infants, while increased reactivity may also indicate a more matured neurological state seen in those born at term. Understanding these developmental milestones can help nurses tailor their care to meet the