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Table 2 General Discriminators for each category as per the Manchester Triage System [2]

From: Autonomic dysreflexia in a tetraplegic patient due to a blocked urethral catheter: spinal cord injury patients with lesions above T-6 require prompt treatment of an obstructed urinary catheter to prevent life-threatening complications of autonomic dysreflexia

Patient category

General discriminators

Red

Airway compromise; inadequate breathing; exsanguinating haemorrhage; shock; currently fitting; unresponsive child

Orange

Severe pain; uncontrollable major haemorrhage; altered consciousness level; hot child; very hot adult

Yellow

Moderate pain; uncontrollable minor haemorrhage; history of unconsciousness; hot adult

Green

Recent mild pain; warmth recent

Blue

Recent mild pain; warmth recent