If the person, whose death is clinically confirmed, is assisted by mechanical ventilation and retains haemodynamic function, the absence of spontaneous ventilation is verified by a hypercapnia test.
Furthermore, in addition to the three clinical criteria mentioned in article R. 1232-1, the irreversible nature of the encephalic destruction is confirmed by:
1° Either two null and reactive electroencephalograms performed at an interval of at least four hours, with maximum amplification over a recording period of thirty minutes, the results of which are immediately recorded by the doctor who interprets them ;
2° Or an angiography showing the cessation of encephalic circulation, the result of which is immediately recorded by the radiologist interpreting it.