After this they would assess Mr Bates’ disability i.e. his conscious levels. The main assessment tool is the AVPU scale listed on the NEWS chart. AVPU is mainly used because it gives rapid assessment of an acutely unwell adult and can signal deterioration. It has 4 main states. Alert, respondent to Voice, respondent to Pain and Unresponsive (Royal Marsden Manuel,). Mr Bates is deemed alert and responsive. However the AVPU scale has been criticised because even though it saves time in assessment and can monitor deterioration it is not very thorough like the Glasgow Coma Scale for example (Zaderez et al, 2015). This relates to Mr Bates as he is at risk of deterioration due to is hypoxia. A lack in oxygen may cause the brain to become hypoxic
