The Nurse Is Providing Care for a Premature Neonate Born

The nurse is providing care for a premature neonate born at 28 weeks gestation who is experiencing respiratory distress syndrome (RDS) . Which assessment finding indicates to the nurse that the neonate's respiratory status is deteriorating?

A) Pao₂ is 48 and Paco₂ is 55 mm Hg on 90% oxygen.
B) Respiratory rate is 58 breaths per minute.
C) Breath sounds on auscultation are decreased.
D) Heart rate is 162 beats per minute.