Approach to delay or regression in developmental milestones Quiz: Ace Your Exams

A 4-year-old boy is brought to the pediatrician by his parents due to developmental concerns. He uses fewer words than his siblings at the same age, and non-family members find it difficult to understand him when he speaks. Vocabulary includes less than 50 words, and he does not know the names of colors or body parts. The child plays appropriately and makes good eye contact. Parents report he can catch a ball, walk down the stairs alone and can draw a square. He can dress himself. He was born 39 weeks after an uncomplicated pregnancy. However, at 10 days of life, he was admitted to the intensive care unit for a fever and was treated with ampicillin and gentamycin for three weeks.  Vital signs are within normal limits. On physical examination, no dysmorphic facial features are noted.  He does not look at objects or people named by the examiner. The bilateral ear canals and tympanic membranes are normal. Cardiopulmonary and abdominal exams are normal. A hearing test reveals bilateral sensorineural hearing loss. Which of the following of the following is the best next step in management?