Welcome to the health professionals section of the Cardiothoracic Surgery Unit at Great Ormond Street Hospital. About usInformation about the Cardiothoracic surgery unit. Clinical outcomesView the clinical outcomes from the unit. Refer a patientDetails on how to refer a patient to our care. Conditions we treatInformation on the conditions we treat. Meet the teamMeet the team who make up our unit. Research and publicationsFind out about our research and publications. Contact usDetails on how to contact the unit.