Supplementary Table 1.

All India Institute of Medical Sciences triage protocol - identification of red patients based on altered physiology, time-sensitive conditions

Altered physiology (If any one of the following is present on assessment)
Airway compromise	Stridor/noisy breathing
	Angioedema involving the face
	Active seizures
Breathing compromise	Talking in incomplete sentences
	Audible wheeze
	RR >22/min or <10/min
	sO2 <90%
Circulation compromise	Pulse <50/min or >120/min (without fever)
	SBP >220 or DBP >110
	SBP <90 or DBP <60
	Shock index >1 (Pulse rate/SBP)
	Active bleeding (Epistaxis, gum bleed, hematemesis, others)
Disability	Altered sensorium (responding only to verbal or pain stimuli/unresponsive)
Time-sensitive conditions: (Triage red if any one present on assessment)
Acute chest pain (<24 h duration)	Limb weakness <24 h duration
Suspected stroke presenting within 24 h of onset	Drowning/hanging/electrocution/trauma with dangerous mechanism of injury
Acute onset shortness of breath within 12 h	Acute limb ischemia <48 h duration
Allergic reaction	Acute scrotal/inguinal pain in young male
Severe pain anywhere in body	Sudden onset abdominal pain
Sudden headache	Acute urinary retention
Any evaluation outside suggesting a time sensitive emergency condition including	Fever with (any one)
	Temperature >39°C
	Aplastic Anemia
Acute coronary syndrome, aortic dissection	Acute Leukemia
	History of chemotherapy within 14 days
Acute stroke
Sepsis
Serum potassium >5.5 mEq/L in outside reports	History of syncope
Needle prick injury
Other conditions with increased urgency (triage red if any one present on assessment)
Abdominal pain with vaginal bleeding
Agitated or violent patient
Suspected poisoning/snake bite/scorpion sting
Pregnancy in 3rd trimester with abdominal pain/vaginal bleeding
Triage officer discretion on patient’s overall condition

BP: Blood pressure, SBP: Systolic BP, DBP: Diastolic BP, RR: respiratory rate