Final answer:
The nurse should be most concerned about finding bilateral rales on lung auscultation during the assessment of a neonate shortly after delivery. Bilateral rales can indicate potential meconium aspiration and respiratory problems in the newborn.
Step-by-step explanation:
The nurse should be most concerned about finding bilateral rales on lung auscultation during the assessment of a neonate shortly after delivery. Bilateral rales, which are abnormal crackling sounds heard in the lungs, can indicate a potential respiratory problem in the newborn. This finding may suggest the possibility of meconium aspiration, where the newborn inhales meconium (the first stool) during or shortly after birth. Meconium aspiration can cause complications such as labored breathing and respiratory distress.