Handling the mid-case complication
Why examiners ask this
Adaptability to unexpected clinical changes is one of the attributes the ABA names for the SOE,1 and the only way to grade it is to change something. In the ABA sample exam the changes are written into the questions of every block, usually at the moment the candidate has settled into a plan: saturation falls to 90% after 20 minutes of one-lung ventilation, the surgeon tears the pulmonary vein, pressure drops to 50/35 in a sitting craniotomy, new ST elevation appears 8 hours after surgery.2 The inject tests whether the candidate recognizes a problem from raw data, communicates it, treats the most dangerous cause first and reassesses, all while the original plan is still running. It is the part of the exam most like real practice and the part most candidates rehearse least.
The 60-second answer
I run the same loop every time: recognize, communicate, treat, reassess. Recognize means I name the finding and the most dangerous cause it could represent before I name the most likely one: "A sudden fall in end-tidal CO2 with hypotension in a sitting craniotomy is air embolism until proven otherwise." Communicate means I tell the surgeon and the room in one sentence what I think is happening and what I need from them. Treat means the first two actions that address the dangerous cause, with the reason. Reassess means I state the parameter and the time frame that tell me whether it worked: "If the pressure is not recovering within two minutes I escalate." The loop takes 30 seconds to say and gives the examiner all four attributes. Then I stop, because the next inject is already coming.
Decision points and the "why"
- Dangerous before likely — the examiner is testing whether I would miss the thing that kills. Naming hypovolemia first when the stem supports tension pneumothorax reads as a judgment failure even if hypovolemia is statistically more common.
- Simple causes in the same breath — I check the obvious at the same time: disconnection, light anesthesia, measurement error, the surgeon's hand on the vena cava. Saying "while I confirm the monitor is real" shows organization without delaying treatment.
- Tell the surgeon — in most injects the surgeon is the one who can stop the cause: flood the field, release the retractor, deflate the abdomen. A candidate who treats the patient silently has left out the most effective intervention.
- One intervention, then a reassessment point — "I give 100 mcg phenylephrine and look at the pressure in 60 seconds" is a plan the examiner can follow and push on. Five simultaneous interventions cannot be evaluated and read as panic.
- Keep the original case running — the surgery is still happening; I state whether it continues, pauses or aborts, and why. The examiner will ask if I do not.
- Call for help early and say what the help is for — a second pair of hands, a specific drug, the difficult airway cart, the MH cart. Help without a purpose is noise.
The complication they will inject
The method breaks when the first treatment does not work and the examiner says so: "The pressure is still 60 systolic." The scored attribute now is adaptability, and the candidate who repeats the same intervention louder loses it. I escalate along a stated path: a second cause, a stronger drug, a different route. "Phenylephrine did not work, so this is not pure vasodilation; I move to epinephrine, I ask the surgeon to stop, and I look at the right heart with echo if I can get it." The second way it breaks is when I freeze because I do not recognize the pattern. I recover by treating the physiology I can see rather than the diagnosis I cannot name: oxygen, pressure, rhythm, ventilation, in that order, while I say what I am looking for. The third is the examiner moving on before the case resolves; I let it go, because the next block is also scored, and a candidate who keeps returning to an unfinished inject is disorganized.
Pitfalls that cost points
- Asking for a laboratory result or a chest film before doing anything; the examiner will give the data after I act, not instead.
- Running through a memorized differential of twelve causes without saying which one I treat first.
- Forgetting the surgeon exists.
- Treating the number: a pressure of 70 in a chronically hypertensive patient with an open skull is different from 70 in a young trauma patient, and I say which.
- Reporting the resolution before the examiner gives it; I do not get to decide that the patient got better.
Rapid-why
Q: Why state the dangerous cause first even when I doubt it? A: The examiner scores whether I would miss a lethal diagnosis; saying it and excluding it costs five seconds and shows judgment.
Q: What if the inject is outside my practice, such as a pediatric arrest? A: The loop is the same; I run it on the physiology, state the weight-based drugs I know, and name the help I call.
Q: When do I abort the case? A: When the patient's safety requires an intervention the surgery prevents, or when the cause cannot be controlled with the surgery ongoing; I say this and let the surgeon argue.
Q: Can I ask the examiner for data? A: Yes, once I have acted on what I have; "after the first dose, what is the pressure?" is a reassessment and is scored well.
Numbers to know
| Item | Value |
|---|---|
| Loop | Recognize, communicate, treat, reassess |
| Time to say the loop | ~30 s |
| Reassessment window | 1–2 min per intervention |
| Injects, ABA sample | Several per session, in every block2 |
| Intra-op block, session 1 (sample) | 10 min2 |
| Intra-op block, session 2 (sample) | 15 min2 |
Links
- How the SOE is scored: what examiners grade, Structuring an answer in 45 seconds, Using the 20- and 10-minute stem review, Intraoperative hypotension: differential and management, Intraoperative cardiac arrest
- Atlas: Monitor atlas: perioperative cardiac events; Monitor atlas: perioperative respiratory events
- ABA Sample Standardized Oral Exam Questions; ABA APPLIED Exam page
Sources
- 1.APPLIED Exam · ABA · theaba.org
- 2.Sample Standardized Oral Exam Questions · ABA · theaba.orgPublic sample; block names and minutes are taken from the sample sessions.
Facts on this page were checked against these sources on Oct 14, 2026. Guidelines change; confirm doses against current institutional protocols.