- 102 - the existing arrangements for dealing with a mentally disturbed and violent patient to be brought into conformity immediately with the following rules:  such a prisoner to be treated through close supervision and nursing support;  the use of sedatives to be decided exclusively by a medical doctor or, in the event of a emergency, by a fully-qualified nurse;  resort to instruments of physical restraint to be treated as an exceptional measure and always to be either expressly ordered by a medical doctor or immediately brought to the attention of such a doctor with a view to seeking his approval;  instruments of physical restraint to be removed at the earliest possible opportunity and never to be applied, or their application prolonged, as a punishment;  in the event of resort being made to instruments of physical restraint, an entry to be made in both the prisoner's file and an appropriate register, with an indication of the times at which the measure began and ended, as well as of the circumstances of the case and the reason for resorting to such measures (paragraph 189). comments - the CPT's delegation was not convinced that the confidentiality of medical data was fully guaranteed at the infirmary of the Korydallos Mens Prison (paragraph 152); - the conditions in the custodial unit for prisoners at the Nikea Hospital left much to be desired (paragraph 166); - either the Prison Hospital at Korydallos should be resourced as a hospital in the true sense of the term or, when appropriate, ready access to fully-equipped hospital services elsewhere should be guaranteed for patients held there (paragraph 174). requests for information - information on the progress made towards the implementation of the proposals for improvements to the health care service at Larissa Prison, contained in the report drawn up by the Ministry of Justice's Prison Inspectorate (paragraph 156); - information on the facilities in civil hospitals at Athens for receiving prisoners in need of specialist examinations or hospitalisation and the comments of the Greek authorities on the statements by medical staff at the Prison Hospital at Korydallos and at Korydallos Womens Prison that the transfer of a prisoner in need of a special examination or hospitalisation was not always carried out with due promptness (paragraph 165).