In this scenario, the EMT's top priority is still the airway . Even with a suspected neck injury, ventilation will not be effective unless the airway stays open and patent . National EMS education standards emphasize that EMT care in airway emergencies is built around assuring a patent airway, adequate mechanical ventilation, and respiration . ( ems.gov ) Trauma guidance supports using a jaw-thrust first when spinal injury is suspected, but it also makes clear that opening and maintaining the airway takes precedence for oxygenation and ventilation. The AHA notes that in head and neck trauma, the priority is to open the airway . ( cpr.heart.org )

This scenario suggests a potential multiple-casualty incident with a possible environmental hazard, such as carbon monoxide or another toxic gas. NREMT places strong emphasis on scene size-up as the first and most critical step in EMS operations.
Option B is correct because determining the size and scope of the incident allows the EMT to assess scene safety, identify hazards, estimate the number of patients, and determine the need for additional resources.
Entering the scene without this assessment could result in responder injury or death.
Option A is incorrect because establishing command typically follows an initial size-up. Command cannot be effectively established without understanding the nature of the incident.
Option C is incorrect because announcing the presence of poisonous gas without confirmation may cause panic and is not an appropriate first action.
Option D is incorrect because attempting rescue before confirming scene safety violates NREMT's core principle that rescuer safety comes first.
NREMT standards clearly state that EMTs must never enter a potentially hazardous scene until it has been properly assessed and deemed safe or appropriate resources are requested.

Clavicle deformity suggests potential rib or thoracic trauma. Unequal chest rise may indicate a flail segment, pneumothorax, or hemothorax. Subcutaneous emphysema, the presence of air under the skin, is a classic finding in pneumothorax or tracheobronchial injury.
Occipital depression is not chest related; epigastric distension is a GI symptom; and jugular vein distention would suggest tension pneumothorax or cardiac tamponade, which are more advanced complications.
References:
NREMT Trauma Assessment Guidelines
National EMS Education Standards - Chest Injuries
AAOS Emergency Care and Transportation (11th ed.), Chapter: Chest and Abdominal Trauma

The correct answers are A and C.
START triage categorizes patients based on respirations, perfusion, and mental status (RPM). A red tag (Immediate) is assigned to patients who have life-threatening conditions that can be rapidly treated.
START Criteria for Red Tag (Immediate):
Respirations > 30/min
Capillary refill > 2 seconds or no radial pulse
Unable to follow commands
Option A: Correct (Red Tag)
The child is unconscious (cannot follow commands) # immediate red classification Capillary refill is 4 seconds ( > 2 seconds) # poor perfusion Meets two red criteria Option C: Correct (Red Tag) Normal respirations (acceptable), BUT Capillary refill is 5 seconds ( > 2 seconds) # indicates poor perfusion/shock This alone qualifies for red tag Why the other options are incorrect:
B). Walking patient # Automatically categorized as green (minor) regardless of other findings D). No breathing after airway repositioning # Classified as black (deceased/expectant), not red E). Cannot walk but follows commands, normal breathing, normal pulse # Yellow (delayed) Exact Extracts:
"Patients who can walk are tagged as minor (green)."
"If capillary refill is greater than 2 seconds, tag the patient as immediate (red)."
"If the patient cannot follow simple commands, tag as immediate."
"If the patient is not breathing after airway repositioning, tag as deceased (black)." References:
NREMT EMT Education Standards - EMS Operations (Triage)
START Triage Guidelines - RPM (Respirations, Perfusion, Mental Status)
NREMT Candidate Handbook - Mass Casualty Incidents

Contraindications to CPAP (Continuous Positive Airway Pressure) include:
Hypotension: CPAP can reduce preload and worsen shock (BP < 90 systolic is a contraindication) Respiratory rate too low: A rate of 10 is at the low threshold; CPAP requires spontaneous adequate effort Active vomiting or nausea: CPAP increases aspiration risk Crackles and hypoxia are indications, not contraindications, for CPAP. Pulse rate does not influence CPAP use directly.
References:
NREMT Airway Management and Cardiovascular Guidelines
National EMS Education Standards - Respiratory Failure and CPAP
AHA ACLS Provider Manual - Heart Failure and Pulmonary Edema Management