While caring for a neonate born at 32 weeks' gestation, the nurse assesses the neonate daily for symptoms of necrotizing enterocolitis (NEC). Which of the following would alert the nurse to notify the...

While caring for a neonate born at 32 weeks' gestation, the nurse assesses the neonate daily for symptoms of necrotizing enterocolitis (NEC). Which of the following would alert the nurse to notify the neonatologist?

1. The presence of 1 mL of gastric residual before a gavage feeding.

2. Jaundice appearing on the face and chest.

3. An increase in bowel peristalsis.

4. Abdominal distention.