A detainee who is restrained, including restraint using mechanical equipment, should be under constant observation (level 3) or in close proximity (level 4) so that officers and staff can monitor all vital signs and make appropriate intervention if a medical emergency arises. See detainee care, levels of observation. Guidance available under Risk assessment sets out symptoms of some medical or mental health conditions. There are also risk factors particular to positional asphyxia. Postcodes for Highlands and Islands of Scotland, N Ireland, Isle of Man & Isles of Scilly, Channel Islands and Isle of Wight are: FK17-99, G83, KW1-14, IV, HS, KA27-28, PA20-49, PA60-78, PH15-26, PH30-44, PH49-50, ZE, AB51

general over-arousal of body systems (increased breathing and heart rate, muscle twitching, dilating pupils)Ministry of Justice (2008) The Mental Capacity Act 2005: Deprivation of liberty safeguards - Code of Practice to supplement the main Mental Capacity Act 2005 Code of Practice In a pre-planned relocation using a specialist team, the team supervisor is responsible for the tactics of the procedure and team management, but the custody officer retains responsibility for the welfare of the detainee in accordance with section 39 of PACE. Use of Taser

All police officers and custody staff should be aware of the dangers of positional asphyxia and restraining people experiencing acute behavioural disturbance (ABD), which is a medical emergency.the body position of a person results in a partial or complete obstruction of the airway and the subject is unable to escape from that position In recording the use of force, officers and staff should use the following categories as a minimum: Detainees should not be asked to squat during a strip search. The custody officer must fully explain the reason(s) for the search. Custody officers should consider repeating this later during custody if the circumstances of the search were volatile.