TNCC Initial Assessment and Triage 2 — Questions and Answers
Question 1: During the primary survey, which life-threatening condition should be identified and treated during the 'C' (Circulation) assessment?
- Tension pneumothorax
- Uncontrolled external hemorrhage (Correct answer)
- Cervical spine instability
- Altered level of consciousness
Correct answer: Uncontrolled external hemorrhage
The 'C' component of the primary survey focuses on circulation and hemorrhage control, including identifying and controlling life-threatening external bleeding and assessing for signs of shock.
In the TNCC primary survey (ABCDE approach), 'C' stands for Circulation with hemorrhage control. This phase includes: (1) identifying and controlling exsanguinating external hemorrhage with direct pressure, tourniquets, or hemostatic agents; (2) assessing skin color, temperature, and moisture (cool/pale/diaphoretic suggests shock); (3) checking pulse quality and rate; (4) assessing capillary refill; (5) obtaining blood pressure; and (6) initiating IV access and fluid resuscitation. Tension pneumothorax is addressed in 'B' (Breathing), cervical spine in 'A' (Airway with c-spine protection), and altered consciousness in 'D' (Disability). Note that massive external hemorrhage (exsanguination) may be addressed even before 'A' in some updated protocols (the 'X-ABCDE' or 'C-ABCDE' approach).
Question 2: The secondary survey in trauma assessment is best described as:
- A rapid 60-second assessment of airway, breathing, and circulation
- A head-to-toe physical examination performed after life threats are addressed (Correct answer)
- The initial triage assessment performed at the scene
- A reassessment performed only if the patient's condition deteriorates
Correct answer: A head-to-toe physical examination performed after life threats are addressed
The secondary survey is a systematic head-to-toe physical examination performed after the primary survey is complete and all immediately life-threatening conditions have been identified and treated.
The secondary survey is a thorough, systematic head-to-toe assessment that occurs only after the primary survey (ABCDE) is complete and all identified life threats have been addressed or are being managed. It includes: a complete history (AMPLE: Allergies, Medications, Past medical history, Last meal, Events leading to injury), a detailed head-to-toe physical examination (inspect, auscultate, palpate all body regions), diagnostic studies (labs, imaging, FAST exam), and documentation of all findings. If at any point during the secondary survey the patient's condition deteriorates, the nurse must return to the primary survey to re-evaluate ABCDEs. The secondary survey should never delay management of life-threatening conditions identified in the primary survey. It aims to identify all injuries to guide definitive care planning.
Question 3: Which vital sign change is the EARLIEST indicator of hypovolemic shock in an adult trauma patient?
- Hypotension (systolic BP < 90 mmHg)
- Tachycardia (Correct answer)
- Decreased urine output
- Widened pulse pressure
Correct answer: Tachycardia
Tachycardia is typically the earliest vital sign change in hypovolemic shock, as the heart rate increases to compensate for decreased stroke volume before blood pressure drops.
In hypovolemic shock, the sympathetic nervous system activates a cascade of compensatory responses. Tachycardia is the earliest vital sign change because the baroreceptor reflex immediately increases heart rate and contractility to maintain cardiac output (CO = HR x SV) as stroke volume decreases from blood loss. Blood pressure is maintained through increased systemic vascular resistance (vasoconstriction) until approximately 30% blood volume is lost (Class III hemorrhage). Therefore, hypotension is a LATE finding indicating decompensation. Pulse pressure narrows (does not widen) in early hemorrhage as diastolic pressure rises from vasoconstriction. Decreased urine output occurs early but requires catheterization to detect. Tachycardia may be absent in patients on beta-blockers, in athletic individuals, or in pregnancy (where baseline HR is already elevated), making it an imperfect but typically earliest-detected vital sign change.
Question 4: A trauma patient arrives with injuries from a motorcycle collision. Using the AMPLE history mnemonic, the 'E' represents:
- Emergency contacts
- Examination findings
- Events and environment related to the injury (Correct answer)
- Expected outcome
Correct answer: Events and environment related to the injury
In the AMPLE history, 'E' stands for Events/Environment related to the injury — the mechanism of injury, protective equipment used, environmental factors, and pre-hospital treatment.
The AMPLE history is a rapid, focused history tool used in trauma assessment: A = Allergies (medications, latex, environmental); M = Medications (including over-the-counter, supplements, anticoagulants, insulin); P = Past medical/surgical history (comorbidities, previous surgeries, pregnancy); L = Last meal or oral intake (aspiration risk, surgical planning); E = Events/Environment related to the injury. The 'E' component is critical because mechanism of injury (MOI) helps predict injury patterns. For this motorcycle collision: speed, helmet use, protective clothing, ejection vs. lay-down, impact point, distance thrown, road surface, weather conditions, and what pre-hospital treatments were provided. MOI helps the nurse anticipate injuries that may not be immediately apparent — high-speed motorcycle crashes carry high risk of long bone fractures, pelvic injuries, head injuries, and thoracoabdominal trauma.
Question 5: Which triage category is assigned to a walking trauma patient in the Emergency Severity Index (ESI)?
- ESI Level 1 — Resuscitation
- ESI Level 2 — Emergent
- ESI Level 3 — Urgent
- It depends on vital signs, mechanism of injury, and resource needs (Correct answer)
Correct answer: It depends on vital signs, mechanism of injury, and resource needs
Unlike field triage systems, ESI does not automatically assign a level based on the ability to walk. ESI considers acuity, expected resource needs, vital signs, and clinical presentation to assign one of five levels.
The Emergency Severity Index (ESI) is a five-level hospital triage system that differs fundamentally from field triage systems like START (where walking = Green/Minor). ESI considers two primary dimensions: (1) acuity — how urgently the patient needs to be seen, and (2) expected resource needs — how many resources (labs, imaging, procedures, IV fluids, consultations) will be required. A walking trauma patient might be ESI-2 if they have a concerning mechanism (e.g., pedestrian struck at high speed but ambulatory — occult injuries possible) or ESI-3 if they need imaging and labs but are stable. ESI-1 is reserved for immediate life-saving intervention; ESI-5 requires no resources. The key point is that ambulation alone does not determine acuity — clinical judgment, vital signs, pain assessment, mechanism, and anticipated resource needs all factor in.
Question 6: During trauma triage, the nurse identifies a patient with a penetrating abdominal wound, blood pressure 88/50, and heart rate 128. The correct triage decision is:
- Send to radiology for CT scan
- Assign to a lower-acuity treatment area for monitoring
- Activate the trauma team for immediate resuscitation (Correct answer)
- Obtain laboratory studies and reassess in 15 minutes
Correct answer: Activate the trauma team for immediate resuscitation
This patient has penetrating trauma with hemodynamic instability (hypotension, tachycardia), meeting criteria for the highest triage acuity and immediate trauma team activation.
This patient meets multiple criteria for the highest-priority trauma activation: (1) penetrating abdominal wound — mechanism with high potential for life-threatening injury to solid organs, hollow viscera, or major vessels; (2) hypotension (SBP 88 mmHg) — indicating significant hemorrhage with hemodynamic decompensation; (3) marked tachycardia (128 bpm) — compensatory response to blood loss. This combination requires immediate trauma team activation, direct assessment in the resuscitation bay, concurrent interventions (two large-bore IVs, type and crossmatch, massive transfusion protocol preparation), FAST exam, and likely emergent surgical exploration. Delaying for CT, lab results, or monitoring would waste critical time — this patient may be losing blood rapidly into the peritoneal cavity and needs source control.
TNCC Initial Assessment and Triage 2
During the primary survey, which life-threatening condition should be identified and treated during the 'C' (Circulation) assessment?