Trauma Basics

Foundational Trauma Knowledge for FNPs

Trauma basics form a cornerstone of emergency and urgent care for the Family Nurse Practitioner (FNP). Trauma is the leading cause of death for individuals aged 1–44 in the United States [1]. The FNP must be proficient in the initial assessment, stabilization, and management of injured patients, often acting as the first point of contact in rural or community settings. Mastery of trauma basics ensures rapid recognition of life-threatening injuries, appropriate activation of transfer protocols, and improved patient outcomes [2]. High-yield exam content focuses on the primary survey (ABCDE), immediate interventions, and recognition of shock.

Trauma Terminology, Mechanisms, and Shock Staging

  • Primary Survey: A rapid, systematic assessment (Airway, Breathing, Circulation, Disability, Exposure) to identify and treat life-threatening conditions [3].
  • Secondary Survey: A head-to-toe evaluation performed after the primary survey is complete and life threats are addressed [3].
  • Mechanism of Injury (MOI): The force and energy exchange that caused the trauma (e.g., blunt vs. penetrating). High-risk MOI includes falls >20 ft (6 m), high-speed MVC, and penetrating injuries to torso [4].
  • Golden Hour: The critical first hour after injury when definitive care most influences survival [5].
  • Shock: Inadequate tissue perfusion. In trauma, hemorrhagic shock is most common, classified by the ATLS guidelines into four classes based on blood loss and vital signs [3].
  • Damage Control Resuscitation (DCR): A strategy that includes permissive hypotension, limited crystalloid use, early blood product transfusion (1:1:1 ratio), and hemorrhage control [6].

ABCDE Sequence and Adjunct Evaluation Tools

Primary Survey (ABCDE)

  1. A – Airway with cervical spine protection: Assess patency. If compromised, perform chin lift/jaw thrust (with c-spine immobilization). Insert oral/nasal airway. Definitive airway (endotracheal intubation) if GCS <8 or unable to protect airway [3].
  2. B – Breathing and Ventilation: Inspect chest for symmetry, auscultate breath sounds, palpate for crepitus/tracheal deviation. Manage tension pneumothorax (needle decompression), open pneumothorax (three-sided dressing), flail chest [3].
  3. C – Circulation with hemorrhage control: Assess pulse, skin color, capillary refill. Obtain IV/IO access. Control external hemorrhage with direct pressure, tourniquets, or pelvic binder. Begin balanced resuscitation [3].
  4. D – Disability (Neurologic Status): Assess GCS, pupil size and reactivity, lateralizing signs. Consider spinal cord injury [3].
  5. E – Exposure and Environmental Control: Remove clothing for full exam, logroll to inspect back, then cover patient to prevent hypothermia [3].

Adjuncts to Primary Survey

  • Continuous ECG monitoring, pulse oximetry, capnography.
  • Focused Assessment with Sonography in Trauma (FAST) exam for intra-abdominal and pericardial fluid [7].
  • Diagnostic peritoneal lavage (rarely used; FAST preferred) [3].
  • Chest and pelvic X-rays (ATLS recommends AP chest and pelvis with lateral cervical spine) [3].

Secondary Survey

Performed after primary survey and resuscitation are complete (or if patient stabilizes). Includes AMPLE history (Allergies, Medications, Past medical history, Last meal, Events/Environment) and a complete head-to-toe examination [3].

Recognition of Life-Threatening Trauma Findings

  • Tension Pneumothorax: Hypotension, distended neck veins, tracheal deviation away from affected side, unilateral diminished breath sounds, hyperresonance [3].
  • Cardiac Tamponade: Beck's triad (hypotension, muffled heart sounds, JVD), pulsus paradoxus, Kussmaul sign [8].
  • Hemorrhagic Shock Class III (30-40% blood loss): Decreased systolic BP, tachycardia (>120), altered mental status, oliguria [3].
  • Pelvic Fracture: Unstable pelvis on gentle compression, ecchymosis over perineum, blood at urethral meatus (male) or vaginal bleeding [9].
  • Spinal Cord Injury: Priapism, loss of rectal tone, diaphragmatic breathing (C3-5 injury), areflexia below level of injury (spinal shock) [10].

Initial Diagnostic Studies and Trauma Severity Scores

Initial Diagnostic Workup

  • Blood work: CBC, CMP, coagulation panel, lactate, ABG, type and cross-match [3].
  • Imaging: CT scan (head, cervical spine, chest, abdomen, pelvis) is gold standard for stable patients [4].
  • Lactate & Base Deficit: Serial measurements guide resuscitation adequacy [11].

Key Assessment Scores

  • Glasgow Coma Scale (GCS): Eye (1-4), Verbal (1-5), Motor (1-6). Mild (13-15), Moderate (9-12), Severe (3-8) [12].
  • Revised Trauma Score (RTS): Uses GCS, SBP, respiratory rate to triage [4].

Life-Saving Interventions and Resuscitation Strategies

Immediate Life-Saving Interventions

  • Airway: Endotracheal intubation with rapid-sequence intubation (RSI). Use induction agent + neuromuscular blocker (e.g., etomidate + succinylcholine) [13].
  • Chest decompression: Needle thoracostomy (2nd intercostal space, midclavicular line) for tension pneumothorax; tube thoracostomy for hemopneumothorax [3].
  • Pelvic binding: For unstable pelvic fracture with shock, apply pelvic binder or sheet to reduce volume [9].

Resuscitation Strategies

  • Permissive hypotension: Target SBP 80-90 mmHg until hemorrhage control, unless TBI (maintain MAP >80 mmHg) [6].
  • Transfusion: Massive transfusion protocol (1:1:1: PRBC:FFP:Platelets) for class III/IV shock [6].
  • Tranexamic acid (TXA): 1g IV over 10 min, then 1g over 8h within 3 hours of injury [14].
  • Warm IV fluids: Avoid hypothermia; use fluid warmers [3].

Post-Traumatic Complications and Prevention Strategies

  • Missed injuries: Common in obtunded patients. Reassess at 24-48 hours if possible [3].
  • Hypothermia: Increased coagulopathy and mortality. Keep trauma patient warm [3].
  • Abdominal compartment syndrome: High risk after massive resuscitation; monitor bladder pressure [15].
  • Secondary brain injury: Avoid hypoxia, hypotension, hyperthermia, hypoglycemia [12].
  • Fat embolism syndrome: Long bone fractures; triad: hypoxia, neurologic changes, petechiae [10].

Testable Trauma Concepts and Mnemonic Aids

  • Memorize the primary survey sequence. Reassess after each intervention.
  • Class of hemorrhagic shock: Be able to differentiate Class I (mild, <15% loss) through Class IV (>40% loss, pulseless) [3].
  • Tension pneumothorax requires immediate decompression — do not wait for X-ray.
  • C-spine injury must be assumed in any trauma above the clavicle until cleared clinically or with imaging [3].
  • FAST exam is specific but not sensitive for solid organ injury; CT is definitive [7].
  • Emphasize damage control resuscitation: limited crystalloid, early blood products, permissive hypotension unless TBI [6].
  • AMP of patient: Always ask "When did the patient last eat?" — important for RSI timing.
  • Mnemonics: "ABCDE" for primary survey; "AMPLE" for history; "COAST" (C-spine, Oxygen, Airway, Suction, Tube) for airway equipment check.

References & Sources

  1. CDC. National Center for Health Statistics. Injury Prevention & Control. https://www.cdc.gov/injury/about/index.html
  2. American College of Surgeons. ATLS Student Course Manual. 10th ed. 2018.
  3. American College of Surgeons. ATLS Advanced Trauma Life Support Student Course Manual. 10th ed. Chicago, IL: ACS; 2018. https://www.facs.org/quality-programs/trauma/atls/
  4. Kortbeek JB, Al Turki SA, Ali J, et al. Advanced trauma life support, 8th edition, the evidence for change. J Trauma. 2008;64(6):1638-1650. https://doi.org/10.1097/TA.0b013e3181744b03
  5. Rogers FB, Rittenhouse KJ, Gross BW. The golden hour in trauma: dogma or medical folklore? Injury. 2015;46(4):525-527. https://doi.org/10.1016/j.injury.2014.08.037
  6. Holcomb JB, Tilley BC, Baraniuk S, et al. Transfusion of plasma, platelets, and red blood cells in a 1:1:1 vs a 1:2:4 ratio and mortality in patients with severe trauma (PROPPR). JAMA. 2015;313(5):471-482. https://doi.org/10.1001/jama.2015.12
  7. Scalea TM, Henry SM. The FAST exam for the trauma patient. N Engl J Med. 2021;384(11):1046-1054.
  8. Spodick DH. Acute cardiac tamponade. N Engl J Med. 2003;349(7):684-690. https://doi.org/10.1056/NEJMra022643
  9. Coccolini F, Stahel PF, Montori G, et al. Pelvic trauma: WSES classification and guidelines. World J Emerg Surg. 2017;12:5. https://doi.org/10.1186/s13017-017-0117-6
  10. Fehlings MG, Tetreault LA, Wilson JR, et al. A clinical practice guideline for the management of acute spinal cord injury. Global Spine J. 2017;7(3 Suppl):84S-94S. https://doi.org/10.1177/2192568217701910
  11. Abramson D, Scalea TM, Hitchcock R, et al. Lactate clearance and survival following injury. J Trauma. 1993;35(4):584-589. https://doi.org/10.1097/00005373-199310000-00014
  12. Carney N, Totten AM, O'Reilly C, et al. Guidelines for the management of severe traumatic brain injury, 4th ed. Neurosurgery. 2017;80(1):6-15. https://doi.org/10.1227/NEU.0000000000001432
  13. Stollings JL, Diedrich DA, Oyen LJ, et al. Rapid-sequence intubation: a review of the process. Crit Care Med. 2014;42(12):2553-2560. https://doi.org/10.1097/CCM.0000000000000625
  14. CRASH-2 collaborators. Effects of tranexamic acid on death, vascular occlusive events, and blood transfusion in trauma patients. Lancet. 2010;376(9734):23-32. https://doi.org/10.1016/S0140-6736(10)60835-5
  15. Malbrain MLNG, Cheatham ML, Kirkpatrick A, et al. Results from the international conference of experts on intra-abdominal hypertension and abdominal compartment syndrome. Intensive Care Med. 2006;32(11):1722-1732. https://doi.org/10.1007/s00134-006-0349-1

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