Why Emergency Preparedness Is a Core Competency
Surgical emergencies are rare but require an immediate, coordinated, and rehearsed response - there is no time to look up a protocol once an emergency is underway. The CST exam tests recognition of key emergency scenarios and the surgical technologist's specific role within the broader team response, because hesitation or confusion during an actual emergency directly affects patient outcomes.
Malignant Hyperthermia (MH)
MH is a genetic hypermetabolic reaction triggered by volatile inhalation anesthetics and succinylcholine, presenting with rapidly rising body temperature, muscle rigidity, tachycardia, tachypnea, and rising end-tidal CO2.
- Immediate response - the triggering agent is discontinued immediately, the surgical team is notified, and the case is expedited to conclusion or paused as clinically appropriate.
- Dantrolene - the specific reversal medication, stored on a dedicated MH cart that every OR team member should be able to locate immediately.
- Active cooling - cold IV fluids, ice packs, and other cooling measures are initiated to reduce core temperature.
- Surgical technologist role - know the MH cart location, assist in preparing cooling supplies, and support rapid case conclusion if the surgeon determines it is safe to do so.
Intraoperative Cardiac Arrest
Cardiac arrest during surgery requires immediate activation of the facility's code/emergency response system alongside standard CPR principles, adapted to the surgical context.
- If the patient is prone, positioning may need to be addressed to allow effective chest compressions, or compressions may be performed in the prone position per current resuscitation guidance if repositioning would cause unacceptable delay.
- The surgical field is typically covered with a sterile towel/drape to maintain sterility if the case can be safely paused, while the resuscitation team responds.
- The scrub person maintains awareness of the sterile field status throughout the emergency and communicates clearly about what remains sterile if the procedure needs to resume.
- Defibrillation equipment and code carts should have a known, immediately accessible location in every operating suite.
Operating Room Fire
OR fires require all three elements of the fire triangle: an ignition source (electrosurgery, laser), fuel (drapes, prep solution, endotracheal tubes), and an oxidizer (supplemental oxygen, nitrous oxide). Response follows the RACE protocol common to healthcare fire response:
- Rescue - remove the patient from immediate danger if the fire is on or near the patient.
- Alarm - activate the fire alarm and notify the team/facility per protocol.
- Confine - close doors to contain smoke and fire spread.
- Extinguish/Evacuate - extinguish small fires if safe to do so (removing burning material, smothering with a wet towel, or using a fire extinguisher), or evacuate if the fire cannot be safely controlled.
Prevention remains the priority: allowing alcohol-based prep to fully dry before draping, minimizing supplemental oxygen concentration near the surgical site when electrosurgery is used on the head, neck, or chest, and keeping the active electrode holstered when not in active use.
Anaphylaxis
An intraoperative allergic reaction (to latex, medication, or contrast media) can present with hypotension, bronchospasm, and skin changes, though many of these signs may be masked or altered by anesthesia. The surgical technologist should be aware of any documented patient allergies before the case begins and support the team's rapid response, which typically includes epinephrine administration and airway/circulatory support managed by anesthesia.
Massive Hemorrhage
Uncontrolled major bleeding requires immediate, coordinated response: rapid identification of the bleeding source, mechanical control (direct pressure, clamping) while definitive repair is arranged, and close communication with anesthesia regarding blood product needs and hemodynamic status. The surgical technologist supports this response by anticipating instrument needs (vascular clamps, additional suction, hemostatic agents) before being asked, based on the visible severity of the bleeding.
Equipment Failure
Equipment failure - a malfunctioning electrosurgical unit, a failed laparoscopic tower, a broken instrument mid-procedure - requires the surgical technologist to remain calm, communicate the issue immediately, and have backup equipment or an alternative approach ready. Anticipating potential equipment needs before the case (having a backup instrument set, testing all equipment before draping) prevents many equipment emergencies from occurring at all.
Building Emergency Readiness
- Know the location of emergency equipment (MH cart, code cart, fire extinguishers) in every OR you work in, not just your primary assignment.
- Participate in facility emergency drills seriously, since these rehearsals build the automatic, coordinated response needed during a real event.
- Understand your specific role in each emergency type so you can act immediately without waiting for detailed instruction.
Why the Exam Tests This Heavily
Emergency scenario questions test whether you understand not just what an emergency is, but what the surgical technologist specifically does during that emergency - a distinction the exam draws carefully, since your actions must complement, not duplicate or conflict with, the roles of anesthesia, nursing, and the surgeon during a crisis.