At what gestational age is the ability to suck and swallow fully coordinated?

• A. 28-30 weeks gestation
• B. 32-34 weeks gestation
• C. 34-36 weeks gestation
• D. 40 weeks gestation

Answer: (B)

The ability to coordinate sucking and swallowing develops as the oral-motor system and brainstem control mature in late gestation. Around 32 to 34 weeks, the infant’s neural and muscular systems have progressed enough that a single suck can be followed by a swallow with enough airway protection to allow safe oral intake. Before this window, the patterns are more primitive and uncoordinated, increasing the risk of aspiration or inefficiency during feeding. After about 34 weeks, coordination becomes more stable and reliable, but the 32–34 week window is the most commonly cited milestone for this level of coordination.