How to Handle an Unstable Patient in Anesthesiology Oral Boards
A physiologic, team-based approach that makes immediate priorities, differential diagnosis, definitive treatment, and reassessment visible without delaying care.
Key takeaways
- Declare the crisis and call for help early.
- Support oxygenation, ventilation, and perfusion while diagnosing.
- Stop the trigger and move toward definitive control rather than serial temporary measures.
- State objective reassessment after every major intervention.
Use a crisis sequence that can survive any subspecialty
- 01
Recognize and announce
State the instability, verify the signal, stop nonessential stimulation, and tell the team what you believe is happening.
- 02
Mobilize resources
Call for help, assign roles, request crisis-specific equipment and medications, notify the proceduralist, and activate blood or other institutional pathways.
- 03
Support physiology
Deliver oxygen, secure or rescue the airway, ventilate, restore perfusion, treat immediately reversible causes, and protect the brain and myocardium.
- 04
Diagnose in parallel
Use the timeline, airway and circuit, surgical field, monitors, focused examination, ultrasound, blood gas, and targeted laboratory data.
- 05
Definitive treatment
Stop the trigger, control hemorrhage, relieve obstruction, administer antidote, establish rescue oxygenation, decompress, deliver, or return to surgery as indicated.
- 06
Reassess and plan disposition
Name the objective response, repeated data, residual organ risk, postoperative ventilation, ICU need, disclosure, and handoff.
Recognize the dominant physiologic pattern
| Pattern | Immediate priorities | Decision-changing clues |
|---|---|---|
| Hypoxemia or high airway pressure | 100% oxygen, hand ventilation, confirm tube and circuit, recruit help, treat life threats. | Tube displacement, obstruction, bronchospasm, pneumothorax, aspiration, one-lung ventilation problem, edema, embolism. |
| Hypotension after induction | Verify, oxygenate, assess rhythm and ventilation, reduce anesthetic, support pressure and perfusion. | Vasodilation, hypovolemia, anaphylaxis, dynamic obstruction, ischemia, tamponade, tension pneumothorax, hemorrhage. |
| Sudden cardiovascular collapse | Call code-level help, begin resuscitation, stop trigger, use ultrasound and surgical context. | PE, air embolism, LAST, anaphylaxis, hemorrhage, tamponade, malignant arrhythmia, obstetric catastrophe. |
| Massive hemorrhage | Communicate, activate transfusion, obtain access, warm, correct calcium and coagulopathy, seek source control. | Visible loss, concealed bleeding, dilution, fibrinolysis, hypothermia, ongoing surgical source. |
| Hypermetabolic crisis | Stop triggering agents, call for dantrolene and MH response, hyperventilate, cool, treat potassium and acidosis. | Rapid CO2 rise, rigidity, tachycardia, hyperthermia as a later sign, rhabdomyolysis. |
| Neurologic or delayed emergence | Protect airway, assess ventilation and glucose, reverse appropriate agents, perform focused neurologic evaluation. | Residual drugs or blockade, hypothermia, metabolic disturbance, stroke, seizure, intracranial event. |
High-yield crises to rehearse aloud
Cannot intubate or cannot oxygenate
State the airway call, optimize mask ventilation, use supraglottic rescue, limit repeated attempts, wake the patient when possible, and move to emergency invasive access when oxygenation fails.
Anaphylaxis
Stop suspected exposure, call for help, give epinephrine appropriate to severity, deliver oxygen, support circulation, treat bronchospasm, and plan observation and follow-up.
Local anesthetic systemic toxicity
Stop injection, call for help, manage airway and seizures, begin lipid emulsion, modify resuscitation drugs, and arrange critical care.
Malignant hyperthermia
Stop triggers, deliver high-flow oxygen, give dantrolene, cool, treat hyperkalemia and acidosis, monitor recurrence, and arrange ICU care.
Obstetric collapse
Coordinate maternal resuscitation, left uterine displacement, hemorrhage control, airway management, blood products, and timely delivery when indicated.
Postoperative deterioration
Reopen the differential rather than attributing everything to anesthesia; evaluate airway, ventilation, hemorrhage, ischemia, neurologic injury, residual blockade, sepsis, and procedural complications.
What a strong crisis answer sounds like
Lead with action: “This is severe hypoxemia. I will call for help, give 100% oxygen, switch to manual ventilation, confirm the tube and circuit, and ask the surgeon to stop while I rapidly distinguish displacement, obstruction, bronchospasm, pneumothorax, and pulmonary vascular causes.”
Then commit to the most likely cause from the stem, state the confirming finding, initiate definitive therapy, and close with the response you expect. The examiner should never have to infer whether you recognized the severity.
After stabilization, finish the case
- Communicate current status and residual risk to the team.
- Decide whether the procedure continues, pauses, or is aborted.
- Choose extubation versus ongoing ventilation.
- State ICU, PACU, or transfer requirements.
- Plan serial laboratory, imaging, neurologic, cardiac, or pulmonary reassessment.
- Disclose complications honestly and involve appropriate services.
- Document the event, handoff, and follow-up responsibilities.
Put the framework under pressure
Practice the answer out loud—not only on paper.
Voice-first cases, adaptive examiner follow-up, imaging, complications, and structured educational feedback for anesthesiology.
Questions candidates ask
Frequently asked questions
How much differential diagnosis should I verbalize during a crisis?
State a focused differential organized by immediate threats while beginning lifesaving support. Then commit to the leading diagnosis using the stem, monitors, surgical context, and targeted confirmation.
What is the current ABA APPLIED Exam format?
The APPLIED Exam combines two 35-minute Standardized Oral Examination sessions with seven eight-minute Objective Structured Clinical Examination stations. The OSCE stations have four-minute intervals to review the next scenario.
Does the ABA APPLIED Exam use candidate-submitted personal cases?
No public ABA guidance describes a submitted personal case list or candidate case-defense requirement. SurgiTest therefore emphasizes standardized SOE cases and OSCE stations rather than Personal Case Uploads for this specialty.
Does SurgiTest reproduce ABA questions or calculate an official score?
No. SurgiTest uses original educational cases and public examination information. It does not reproduce secure examination content, convert educational feedback into an ABA result, predict certification, or claim ABA endorsement.
Should I prepare differently for the SOE and OSCE?
Yes. The SOE rewards organized clinical reasoning, rationale, and adaptation as the case changes. The OSCE rewards observable communication, professionalism, and technical performance within tightly bounded tasks.
Where should I confirm current dates and logistics?
Use your ABA GO portal, assigned examination communication, the current APPLIED Exam page, and the current candidate-preparation materials before purchasing nonrefundable travel.
Source transparency
Official references
Board requirements, dates, and candidate instructions can change. Confirm current details directly with ABA and the Board’s candidate portal.
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