20.2 Emergency Procedures
Key Takeaways
- Adult CPR uses 30 chest compressions to 2 ventilations at 100–120 compressions per minute with a depth of at least 2 inches (5 cm); an AED should be applied as soon as it is available
- Anaphylaxis requires intramuscular epinephrine 0.3–0.5 mg (1:1000) in the anterolateral thigh immediately, then supine positioning, airway support, and a second dose at five to fifteen minutes if needed
- Hypovolemic shock presents with tachycardia, hypotension, cool clammy skin, and narrow pulse pressure; cardiogenic shock adds pulmonary edema; neurogenic shock shows hypotension with bradycardia after high spinal cord injury
- Suspected cervical spine injury requires inline stabilization and immobilization — do not move the patient to test range of motion; helmeted athletes follow sport-specific protocols with trained personnel
- Open fractures, gross deformity with neurovascular compromise, and joint dislocations with absent distal pulses are orthopedic emergencies requiring immobilization in the position found and immediate emergency referral
Why Emergency Procedures Matter on Part II
Chiropractors are first-contact providers. NBCE Part II tests whether you can recognize life-threatening conditions, initiate basic life support, immobilize unstable injuries, and refer immediately — not whether you can perform hospital-level procedures. Emergency items often embed a musculoskeletal complaint (neck pain after a fall, ankle injury on the field) and ask for the next correct action before any adjustive care.
The universal priority sequence is C-A-B in cardiac arrest (Compressions, Airway, Breathing) and scene safety → activate EMS → primary survey in trauma. When in doubt, stabilize and call 911.
Cardiopulmonary Arrest (CPA) and AED Use
Adult BLS (single rescuer):
- Verify unresponsiveness and absent normal breathing (gasping counts as arrest)
- Call 911 / activate emergency response and retrieve an AED
- Begin chest compressions: center of chest on lower half of sternum; rate 100–120/min; depth at least 2 inches (5 cm); allow full recoil; minimize interruptions
- 30 compressions : 2 ventilations if providing rescue breaths (compression-only CPR is acceptable for untrained lay rescuers)
- Apply AED as soon as available — follow voice prompts; one shock for shockable rhythms (VF/pulseless VT), then immediate compressions for two minutes before rhythm re-check
Pediatric note (high-yield contrast): infants use two-thumb encircling technique or two fingers; depth roughly one-third anterior-posterior diameter; ratio 15:2 with two rescuers (30:2 single rescuer). Part II may contrast adult and child ratios.
Choking (conscious adult): abdominal thrusts (Heimlich) until object expelled or patient becomes unresponsive. Unresponsive choking victim: begin CPR; look in mouth before each breath and remove visible object — do not blind finger sweeps.
Poisoning and Anaphylaxis in the Office
For ingested poisons, call Poison Control (1-800-222-1222 in the US). Do not induce emesis for caustics, hydrocarbons, or altered mental status. Activated charcoal may help selected early ingestions but is not universal.
Anaphylaxis is a systemic allergic reaction with airway compromise, hypotension, or involvement of two or more organ systems (skin, respiratory, cardiovascular, GI) after allergen exposure (food, drug, insect sting, latex). Treatment sequence:
- Epinephrine 0.3–0.5 mg IM (1:1000) in the anterolateral thigh — repeat every 5–15 minutes if needed
- Place patient supine with legs elevated; do not let them stand (empty-venous syndrome can cause sudden death)
- Supplemental oxygen, IV fluids for hypotension, albuterol for bronchospasm, H1/H2 blockers and corticosteroids as adjuncts — they do not replace epinephrine
A patient stung in the parking lot who develops urticaria, wheeze, and lightheadedness needs epinephrine before you evaluate their thoracic spine.
Thermal Injuries
| Condition | Key Features | First Aid |
|---|---|---|
| Superficial (1st degree) | Erythema, pain, no blisters | Cool water, analgesia |
| Partial thickness (2nd degree) | Blisters, severe pain | Cool water; do not break blisters; cover loosely |
| Full thickness (3rd degree) | Waxy, leathery, painless (nerves destroyed) | EMS; estimate TBSA (Rule of Nines); IV fluids in major burns |
| Heat exhaustion | Heavy sweating, normal mental status, tachycardia | Move to cool area, fluids, rest |
| Heat stroke | Temperature >104°F (40°C), altered mental status, hot dry skin (classic) or sweating (exertional) | Immediate cooling — ice bath or evaporative cooling; EMS |
| Hypothermia | Shivering early; confusion, bradycardia when severe | Remove wet clothing, passive rewarming; handle gently (arrhythmia risk) |
| Frostbite | White/waxy skin, loss of sensation | Rapid rewarming in 37–39°C (98–102°F) water; do not rub or re-freeze |
Rule of Nines (adult TBSA): head/neck 9%, each arm 9%, anterior trunk 18%, posterior trunk 18%, each leg 18%, perineum 1%. Burns involving face, hands, genitals, circumferential limbs, or >10–20% TBSA need burn-center referral.
Shock: Recognize the Pattern
Shock is inadequate tissue perfusion. Four types dominate board questions:
| Type | Mechanism | Classic Signs |
|---|---|---|
| Hypovolemic | Blood or fluid loss (trauma, GI bleed, dehydration) | Tachycardia, hypotension, cool clammy skin, narrow pulse pressure, flat neck veins |
| Cardiogenic | Pump failure (MI, arrhythmia) | Hypotension, pulmonary edema (crackles), JVD, cool extremities |
| Distributive (septic, anaphylactic, neurogenic) | Vasodilation and maldistribution | Warm skin early (septic/anaphylactic); neurogenic: hypotension + bradycardia after cervical/thoracic cord injury |
| Obstructive | Tamponade, tension pneumothorax, massive PE | JVD, muffled heart sounds (tamponade); absent breath sounds + tracheal deviation (tension PTX) |
Neurogenic shock after high spinal cord injury is a Part II favorite: bradycardia with hypotension because sympathetic outflow is lost — do not treat with fluids alone; may need vasopressors and atropine in hospital. Distinguish from spinal shock (temporary loss of reflexes below lesion).
Head and Spinal Injury
Traumatic brain injury red flags: declining consciousness (GCS drop), repeated vomiting, seizure, unequal pupils, post-traumatic amnesia, Battle sign (mastoid ecchymosis), Raccoon eyes (periorbital ecchymosis) suggesting basilar skull fracture, clear fluid from nose/ears (CSF leak — halo sign on tissue).
Cervical spine precautions are mandatory when mechanism includes axial load, diving injury, high-speed MVC, fall from height, or midline neck pain with neurologic deficit. Inline stabilization and rigid collar when trained; log-roll for movement. Do not remove football helmet on field without trained team protocol. A patient who wants their "neck adjusted" after a locker-room fall must be cleared for fracture and instability first.
Concussion: remove from play, rest, gradual return-to-play protocol; second impact syndrome is catastrophic — never return same day.
Fractures, Dislocations, Strains, and Sprains
| Injury | Definition | Emergency Clues |
|---|---|---|
| Fracture | Break in bone continuity | Deformity, crepitus, inability to bear weight; open fracture (bone through skin) is orthopedic emergency — cover with sterile saline dressing, IV antibiotics in ED, do not push bone back |
| Dislocation | Loss of joint congruity | Gross deformity, severe pain, absent distal pulse or sensation — reduce only by trained personnel; splint in position found |
| Sprain | Ligament injury (graded I–III) | Pain, swelling, ecchymosis; Ottawa ankle/knee rules guide imaging need |
| Strain | Muscle or tendon injury | Pain with resisted motion, localized tenderness |
Neurovascular compromise (5 P's: pain out of proportion, pallor, pulselessness, paresthesias, paralysis) after fracture or dislocation — especially knee dislocation with popliteal artery injury — is limb-threatening. Immobilize and activate EMS.
Compartment syndrome: increasing pain despite immobilization, pain with passive stretch, tense compartment, late pulselessness — fasciotomy emergency; do not massage or adjust through it.
Chiropractic Relevance
Your duty is recognize, stabilize, refer. Perform CPR/AED when indicated; administer epinephrine if your state protocol and training allow; immobilize suspected spine fractures; splint gross deformities; and defer all adjustive care until medical clearance after trauma, shock, burns, or altered mental status.
Takeaways: 30:2 at 100–120/min with AED early; epinephrine IM first in anaphylaxis; heat stroke needs cooling now; neurogenic shock is bradycardic hypotension; open fractures and absent distal pulses are EMS cases; and cervical spine precautions trump convenience.
A 58-year-old man collapses in your waiting room. He is unresponsive with agonal gasping and no palpable pulse. After activating emergency services, what is the correct compression-to-ventilation ratio and rate for adult CPR?
A patient develops diffuse urticaria, wheezing, and lightheadedness within minutes of receiving a topical exam product. Blood pressure is 86/54 mmHg. What is the immediate first-line treatment?
A football player is tackled and now has midline cervical tenderness but moves all extremities. Which action is most appropriate before any further physical examination in the office?
A 34-year-old man has a grossly deformed knee after a skiing fall. The foot is pale and cool with a barely palpable dorsalis pedis pulse and increasing pain despite immobilization. Which complication must be suspected?