Dr. Carole Keim welcomes Dr. Jason Bronstein, a pediatric pulmonologist and sleep medicine specialist at Mount Sinai Hospital in New York City, to The Baby Manual. Dr. Bronstein shares his journey from general pediatrics to specializing in childhood asthma, sleep apnea in children, and other pediatric breathing issues. He explains the types of cases referred to a pulmonologist, such as persistent chronic cough, difficulty breathing, or repeated respiratory infections. Dr. Keim and Dr. Bronstein discuss how conditions like asthma or congenital lung disorders are diagnosed, and Dr. Bronstein also highlights how environmental asthma triggers, such as smoke, mould, and allergens, can affect a child's lung health.