| BSI | Body Substance Isolation — gloves, eye protection, mask as needed before patient contact. |
| Scene Safety | Confirm the scene is safe to enter before approaching the patient. |
| ABCs | Airway, Breathing, Circulation — the first physiologic survey on every patient. |
| LOC | Level of Consciousness — assessed when patient is unconscious before ABCs. |
| Jaw-thrust maneuver | Airway-opening technique used when C-spine injury is suspected; replaces head-tilt/chin-lift. |
| C-spine precautions | Manual stabilization of the cervical spine, maintained until the patient is fully packaged on the backboard. |
| JVD | Jugular Venous Distention — visible bulging of the neck veins; sign of right-heart strain or tension pneumothorax. Verbalize present or absent. |
| Tracheal deviation | Lateral shift of the trachea from midline; late sign of tension pneumothorax. Verbalize present or absent. |
| Zygomas | Cheek bones. |
| Maxilla | Upper jaw bone — the "mustache bone" in the handout mnemonic. |
| Mandible | Lower jaw bone. |
| Clavicles | Collar bones. |
| C-collar | Cervical collar — sized and applied after assessing the neck and head, before moving to the torso. |
| Knife hand | Flat-hand technique for pressing straight down on the sternum to check chest integrity. |
| Iliac crests | The upper rims of the hip bones — pressed inward to check pelvic stability. |
| Paradoxical force | Applying force in opposing directions on a long bone to feel for instability or crepitus. |
| CSM | Circulation, Sensory, Motor — distal extremity check performed before and after immobilization. |
| Femur | Thigh bone — assessed with paradoxical force on both legs. |
| Tib-fib | Tibia and fibula — the two bones of the lower leg. |
| Humerus | Upper arm bone. |
| Radius / Ulna | The two bones of the forearm. |
| Breath sound points (front) | The four anterior auscultation points listened to during the rapid trauma exam. |
| Log roll | Coordinated turn that keeps the spine aligned; C-spine calls the roll. Done twice — once to assess thoracic/lumbar spine, once onto the backboard. |
| C-spine calls the roll | The provider holding C-spine stabilization is the one who counts and commands every log roll. |
| Package patient | Secure the patient to the backboard: in-line, padded, strapped (chest, pelvis, knees), head blocks/bed rolls, head secured. |
| Head blocks / bed rolls | Padding placed on either side of the head before securing it to the backboard. |
| Final CSM | Circulation, sensory, motor recheck on all four extremities after packaging — confirms straps did not compromise distal perfusion or nerve function. |