Editing Triage (section)

==== Singapore ====
All public hospitals in Singapore use the Patient Acuity Category Scale (PACS) to triage patient in Emergency Departement. PACS is a symptom-based differential diagnosis approach that triages patients according to their presenting complaints and objective assessments such as vital signs and Glasgow Coma Scale, allowing acute patients to be identified quickly for treatment. PACS classifies patients into four main categories: P1, P2, P3, and P4.<ref name="Fong_2018">{{cite journal | vauthors = Fong RY, Glen WS, Mohamed Jamil AK, Tam WW, Kowitlawakul Y | title = Comparison of the Emergency Severity Index versus the Patient Acuity Category Scale in an emergency setting | journal = International Emergency Nursing | volume = 41 | pages = 13–18 | date = November 2018 | pmid = 29887281 | doi = 10.1016/j.ienj.2018.05.001 | s2cid = 47014585 }}</ref>

{| class="wikitable sortable"
|+ Patient Acuity Category Scale<ref name="Fong_2018" />
|-
! Category (Priority Level)
! Category Name 
! Description
! Example
|-
| P1 
| Critically ill and requires resuscitation
| State of cardiovascular collapse or in imminent danger of collapse and require immediate medical attention.
| Multiple major trauma, head injury with loss of consciousness, shortness of breath, unconsciousness from any cause
|-
| P2 
| Major emergency 
| unable to walk and are in some form of distress, appear stable on initial examination, and are not in imminent danger of collapse, requires very early attention
| Chest pain, major limb fractures, major joint dislocations, spinal cord injury, trunk injury with stable vital signs
|-
| P3 
| Minor emergency
| able to walk, have mild to moderate symptoms and require early treatment
| All sprains, mild constant abdominal pain, fever with cough for several days, insect stings or animal bites (not in severe distress), superficial injuries with or without mild bleeding, minor head injury (alert, no vomiting), foreign object in ear, nose, or throat, urinary tract infections, headaches.
|-
| P4 
| Nonemergency 
| Old injury or condition that has been present for a long time.
| Chronic lower back pain, high cholesterol, acne.
|}

In mass casualty incidents, the [[START triage]] system is used.<ref>{{cite journal | vauthors = Maruhashi T, Takeuchi I, Hattori J, Kataoka Y, Asari Y | title = The Tsukui (Japan) Yamayuri-en Facility Stabbing Mass-Casualty Incident | journal = Prehospital and Disaster Medicine | volume = 34 | issue = 2 | pages = 203–208 | date = April 2019 | pmid = 30957735 | doi = 10.1017/S1049023X19000128 | s2cid = 102349890 }}</ref><ref>{{Cite journal | vauthors = Suzuki Y, Tsujiguchi T, Sakamoto M, Ito K, Tokonami S, Kashiwakura I |title=Current Situation of Triage Methods for Exposed Patients in the Acute Phase of a Nuclear Disaster |url=https://www.jstage.jst.go.jp/article/radiatenvironmed/9/1/9_41/_pdf |journal=Radiation Environment and Medicine}}</ref>