Paediatric cardiac pathologies can only be treated surgically if the cardiac surgery facility is able to carry out the following examinations or have them carried out, around the clock, within a timeframe compatible with the life-threatening emergency: – blood gas tests, biological tests using microtechniques and haemostasis tests ; – two-dimensional transthoracic and transoesophageal echocardiography using mobile equipment with probes; – electroencephalography and transfontanellar ultrasound ; – respiratory endoscopy ;…