Wheeze control: Children with severe asthma who are enrolled in a preventive-care program at Children's Hospital Boston receive free inhalers from insurance companies. The hospital sends nurses to visit families after discharge to make sure children have medicine and know how to use it; it provides home inspections to root out mold; and it offers vacuum cleaners to families who don’t have them. After one year of the program, the hospital readmission rate for young asthma patients dropped by over 80 percent and costs plunged as well. But empty beds meant lost revenue for the hospital (New Yorker, April 5).