Advanced Trauma Life Support (ATLS) Principles

ATLS Overview & Prep - Trauma Tango Prep

• Core Principles: Treat greatest threat to life first. Systematic approach (ABCDE). Do no further harm. Primary survey & resuscitation, secondary survey, definitive care.
• Pre-hospital Phase:
  • Scene safety, patient assessment (ABC).
  • Control major external bleeding. Spinal immobilization.
  • Rapid transport; "scoop and run" vs "stay and play".
  • Pre-arrival notification to trauma center.
• Hospital Preparation (Trauma Bay Readiness):
  • Trauma team activation & clear roles.
  • Equipment check: airway, IV access, chest drainage, warm fluids.
  • Universal precautions. X-ray, CT, lab alerted.

⭐ The 'golden hour' concept emphasizes the urgency of definitive care in trauma to improve outcomes.

Primary Survey (ABCDE) - Alpha-Bravo-Charlie Dance 📌

Rapid identification & management of life-threatening injuries. Prioritize sequentially.

• A: Airway with Cervical Spine Protection
  • Assess: Patency, stridor, foreign body, maxillofacial/neck trauma.
  • Intervene: Jaw thrust/chin lift. OPA/NPA. Suction. Definitive airway (GCS ≤ 8, apnea, impending compromise).
  • C-spine: MILS, collar, blocks. Assume injury in blunt multi-trauma.

  ⭐ In trauma, airway with cervical spine protection is the first priority, as hypoxia can cause irreversible brain damage within minutes.

• B: Breathing & Ventilation
  • Assess: RR, effort, chest expansion, symmetry, SpO2 >94%, auscultate, percuss.
  • Intervene: High-flow O2 (15L/min NRBM). Manage: Tension Pneumo (needle 2nd ICS MCL → drain 5th ICS AAL/MAL), Open Pneumo (3-sided dressing), Massive Hemothorax (chest drain, ?surgery).
• C: Circulation & Hemorrhage Control
  • Assess: HR, BP, skin, CRT <2s, LOC. Bleeding (external/FAST scan/pelvic X-ray).
  • Intervene: Pressure. 2 large IVs (14-16G). Warm crystalloids (up to 1-2L), then balanced blood products (1:1:1).
• D: Disability (Neurological Status)
  • Assess: GCS (E4V5M6), pupils (size, reactivity), AVPU. Check glucose.
• E: Exposure & Environment Control
  • Assess: Fully expose (log roll for back/spine exam).
  • Intervene: Prevent hypothermia (warm blankets/fluids, warm room).

Adjuncts & Re-evaluation - Trauma Tune-Up Time

• Adjuncts (Primary Survey):
  • ECG, SpO₂, ETCO₂.
  • Urinary catheter (output: adult >0.5, child >1 mL/kg/hr). Contra: meatal blood, perineal hematoma.
  • Gastric tube (OG if basilar skull #).
  • X-rays (CXR, Pelvis), eFAST.
    • 
  • DPL: if FAST unavailable/equivocal & unstable.
• Re-evaluation (Continuous):
  • ABCDEs reassessment.
  • Vitals, urine output, therapy response.
  • Lactate, base deficit.
• Secondary Survey:
  • Head-to-toe exam.
  • Neuro exam (GCS).
  • 📌 AMPLE Hx: Allergies, Meds, Past Hx/Pregnancy, Last Meal, Events.
  • Further imaging (CT).
  • Definitive care.

⭐ A normal FAST exam does not definitively rule out intra-abdominal injury, especially retroperitoneal or hollow viscus injuries.

High‑Yield Points - ⚡ Biggest Takeaways

• The ABCDE approach is fundamental for systematic trauma assessment and management.
• Airway maintenance with cervical spine protection is the paramount first step.
• Rapidly treat life-threatening conditions: tension pneumothorax, massive hemothorax, cardiac tamponade.
• Assume hypovolemic shock in hypotensive trauma; initiate aggressive fluid resuscitation.
• Glasgow Coma Scale (GCS) is crucial for evaluating neurological status and TBI severity.
• A thorough secondary survey (head-to-toe) follows primary survey and resuscitation_._