Our Pulmonary Arterial Hypertension service is the only quarternary referral centre for all suspected and confirmed paediatric PAH patients < 16yrs residing in Queensland and northern NSW. Established within the Queensland Paediatric Cardiac service in 2009, the service can provide combination oral and intravenous medication options, with all diagnostic services available onsite. We have close collaboration with respiratory, adult congenital heart disease and adult PAH services based either onsite or externally through TPCH.