SickKids Hospital in Toronto says it is preparing to open up its ICU to adults aged about 40 and younger as Ontario grapples with the pressure that COVID-19 cases have put on the health care system.SickKids, which is primarily a hospital for children, said it has the capacity to treat adults because ICU admissions there have remained low.The hospital is opening up an eight-bed unit to handle adult cases if other hospitals run out of space, it said.“Patient transfers will only occur once certain hospitals in the Greater Toronto Area exhaust available capacity after activating their surge plans, and all potential transfers to neighbouring regions have been attempted,” the hospital said in a statement on its website.