Correct Answer: C. Ambulatory patients
The START triage system (Simple Triage and Rapid Treatment), widely adopted in Indian disaster management and mass casualty protocols, classifies patients into four color-coded categories based on severity and urgency. Green tag (ambulatory patients) represents the lowest acuity group—patients who are walking, alert, and able to follow commands with no life-threatening injuries or respiratory distress. These patients have stable vital signs, can self-evacuate, and require minimal immediate intervention. In the Indian context, following NDMA (National Disaster Management Authority) guidelines and hospital disaster management protocols, green-tagged patients are triaged to a separate holding area for assessment and documentation rather than immediate resuscitation. They represent the largest proportion of casualties in mass disasters and can safely wait for definitive care. Recognition of green-tag patients is critical for resource allocation in resource-limited Indian settings, allowing medical teams to prioritize red (immediate) and yellow (delayed) categories. Green-tagged patients are essentially "walking wounded" who may have minor injuries but pose no immediate threat to life.
Why the other options are wrong
A. High-risk patients — High-risk patients are classified as RED tag in the START triage system, not green. Red-tagged patients require immediate life-saving intervention (airway management, hemorrhage control, shock management) and are prioritized first. This option confuses severity with triage color coding—a common NBE trap for students who conflate 'risk level' with 'color category.' B. Dead patients — Dead or expectant patients (those with injuries incompatible with life in resource-constrained settings) are classified as BLACK tag, not green. Black-tagged patients receive comfort care only. This is a distractor testing whether students understand the complete triage spectrum; confusing black with green suggests fundamental misunderstanding of triage principles. D. Medium risk patients — Medium-risk or delayed patients are classified as YELLOW tag, not green. Yellow-tagged patients have significant injuries but stable vital signs and can tolerate a delay in definitive treatment (e.g., fractures, moderate burns). This option is the most deceptive trap—students may incorrectly assume 'medium risk' falls into the green category, but green is reserved for minimal/no injury only.
High-Yield Facts
- Green tag = Ambulatory, walking patients with minor or no injuries; lowest acuity; largest proportion of mass casualty victims.
- START triage colors: Red (immediate/life-threat), Yellow (delayed/significant injury), Green (minor/ambulatory), Black (dead/expectant).
- Indian disaster protocols (NDMA, hospital DM plans) mandate green-tagged patients be segregated to holding areas for documentation and secondary assessment, freeing resources for red/yellow.
- Green-tagged patients have stable vitals, normal mental status, no respiratory distress, and can self-evacuate or walk with minimal assistance.
- In mass casualty incidents, green-tagged patients typically comprise 70–80% of total casualties but consume minimal medical resources.
Mnemonics
START Triage Color Sequence Red (Immediate) → Yellow (Delayed) → Green (Minor) → Black (Dead). Remember: RYG-B or think 'traffic light' (Red-stop, Yellow-caution, Green-go) + Black for expectant. Green Tag = 'Walking Wounded' If the patient can walk, talk, and think clearly without distress, they are GREEN. Use this bedside rule during any mass casualty drill in Indian hospitals.
NBE Trap
NBE pairs "high-risk" or "medium-risk" language with triage to trap students who conflate clinical severity with triage color categories. The question tests whether students know the definition of green tag (ambulatory status) rather than risk stratification alone.
Clinical Pearl
During Indian hospital disaster drills (common in metro and tier-1 centers), green-tagged patients are often the source of confusion because they appear "well"—but triage is about immediate life threat, not overall injury severity. A patient with a fractured femur but stable vitals is yellow, not green; a patient with a scalp laceration and normal vitals is green. This distinction directly impacts bed allocation and ventilator availability in resource-constrained Indian ICUs during mass casualty events.
_Reference: Bailey & Love Ch. 3 (Trauma & Triage); NDMA Disaster Management Guidelines; Harrison Ch. 295 (Disaster Medicine)_