A 32-year-old male presents to the trauma bay following a high-speed motor vehicle collision. During the primary survey, all of the following are components of the ABCDE assessment EXCEPT:

## Primary Survey: ABCDE Framework **Key Point:** The primary survey follows the ABCDE mnemonic and is designed to identify and manage life-threatening injuries in a systematic, rapid manner. ### ABCDE Components | Component | Assessment Focus | |-----------|------------------| | **A** — Airway | Patency, protection of cervical spine, airway maneuvers | | **B** — Breathing | Bilateral breath sounds, chest wall symmetry, respiratory effort, SpO₂ | | **C** — Circulation | Pulse, blood pressure, skin perfusion, hemorrhage control, IV access | | **D** — Disability | AVPU score (Alert, Verbal, Pain, Unresponsive) or GCS | | **E** — Exposure | Complete undressing, log-roll, temperature management | **High-Yield:** The primary survey is **rapid and focused** — typically completed in 5–10 minutes. It identifies immediately life-threatening conditions requiring emergency intervention. ### What Is NOT Part of Primary Survey **Clinical Pearl:** Detailed neurological examination (including full GCS, cranial nerves, motor/sensory testing, reflexes) is a **secondary survey** activity. In the primary survey, only **AVPU** or a **brief GCS** is assessed to determine level of consciousness and need for airway protection. **Warning:** Confusing primary survey (rapid, life-threat focused) with secondary survey (systematic head-to-toe examination) is a common exam trap. Students often include detailed neuro exams in the primary survey, but this delays critical interventions. ### Correct Answer Rationale Detailed neurological examination is **not** a primary survey component. The primary survey uses only AVPU or quick GCS to assess disability. Comprehensive neuro assessment happens during the secondary survey after life threats are managed. [cite:ATLS 10th Edition Ch 2]