5. Any person who, on 30 April 2003, performed an activity stipulated in this section, is authorized to continue to perform such an activity:(1) an activity stipulated in section 3;
(2) for the purpose of a cerebral electrophysiology examination, administration of the required radioactive substances in the presence of a physician;
(3) for the purpose of a cardiac electrophysiology intervention, in the presence of a physician:(a) preparation and administration of urgently required medications using an intravenous line already in place, while monitoring the patient’s electrophysiology;
(b) in an emergency situation, defibrillation of a patient suffering from induced acute ventricular arrhythmia, while monitoring the patient’s electrophysiology;
(c) programming at the time of implantation and follow-up of a pace-maker;
(4) for the purpose of a polysomnography examination:(a) introduction of an oesophageal balloon;
(b) adjustment of the masks for a Bi-Pap or C-Pap;
(c) administration of oral medication required to induce sleep.