ABA Pediatric Anesthesiology common mistakes
ABA Pediatric Anesthesiology · Understand the traps and how to avoid them.
Calculating pediatric drug doses and fluid volumes from adult per-kilogram habits without applying the nonlinear weight-based scalings (e.g., 4-2-1 hourly fluid rule, weight-banded epinephrine, or allometric dosing for infants), then selecting an answer that is a linear extrapolation.
Adult training ingrains linear mg/kg thinking; infant pharmacokinetics (larger volume of distribution for water-soluble drugs, immature clearance) and fluid requirements do not scale linearly, and candidates default to the familiar formula under time pressure.
What to do instead
Before answering any dosing item, explicitly write the patient's weight band and the governing rule (e.g., 4-2-1 for maintenance fluids, 0.01 mg/kg epinephrine with max dose, banded dosing for resuscitation). Recompute using the pediatric-specific rule and compare against the linear answer to catch the trap.
Treating the infant airway as a scaled-down adult airway when predicting difficulty or choosing equipment, rather than reasoning from the specific anatomic differences (large occiput, cephalad and anterior larynx, large tongue, short trachea, narrowest point at the cricoid).
Candidates memorize a list of differences but fail to connect each difference to a clinical consequence, so they cannot predict which maneuver or tube size is correct in a scenario.
What to do instead
For each anatomic feature, rehearse the consequence: occiput -> shoulder roll and neutral alignment; cephalad larynx -> straight blade or miller; short trachea -> risk of mainstem intubation, confirm depth; cricoid narrowing -> uncuffed tube sizing and leak test. Apply the consequence explicitly in the stem.
Missing the anesthetic implications of an underlying congenital lesion because the candidate focuses on the procedure rather than classifying the lesion (e.g., failing to identify a fixed-obstruction lesion such as aortic stenosis or a single-ventricle physiology as high-risk for induction agents and preload/afterload changes).
Disease-based items are framed around a surgery, and candidates skim the comorbidity; without a physiologic classification framework they cannot derive which drugs or monitors are dangerous.
What to do instead
Build a classification habit: for any cardiac or systemic lesion, state shunt direction, ventricular function, and whether output is fixed or flow-dependent. Then map to induction agent, ventilation strategy, and monitoring. Answer from the physiology, not the diagnosis name.
Choosing an induction or maintenance agent by habit (e.g., propofol for all, or succinylcholine for all) without checking the contraindication specific to the pediatric condition in the stem (e.g., propofol in a child with propofol infusion concerns, succinylcholine in a child with an undiagnosed myopathy or hyperkalemia risk, or volatile agents in a child with a history concerning for malignant hyperthermia).
Candidates rely on default adult-friendly agents and do not systematically screen the stem for contraindications before selecting.
What to do instead
Adopt a two-pass method: pass one, list the patient's risk factors (neuromuscular disease, hyperkalemia, MH susceptibility, raised ICP, full stomach); pass two, eliminate any agent that is contraindicated for each factor before choosing among the remainder.
Placing a regional block or calculating local anesthetic dose without accounting for cumulative dose across multiple blocks and without weight-based maximums, leading to selection of a toxic total volume.
Regional items present a single block, so candidates compute one dose and stop; they forget that combined blocks share the same maximum and that infant protein binding and clearance lower the safe ceiling.
What to do instead
Always total all local anesthetic planned (including any infiltration or test dose) and compare to the weight-based maximum for that agent. If the stem includes more than one block, sum them before answering.
Managing a pediatric resuscitation scenario with adult compression-to-ventilation ratios, adult energy doses for defibrillation, or adult fluid bolus volumes.
Adult ACLS algorithms are overlearned and are retrieved automatically; pediatric-specific numbers (compression ratio, joules per kilogram, 10-20 mL/kg boluses) are less practiced and get overwritten.
What to do instead
Before committing, state the pediatric parameters aloud: compression:ventilation ratio, defibrillation energy in J/kg, epinephrine dose and route, fluid bolus in mL/kg. Answer only after these are confirmed against the stem's age.
Failing to recognize and act on a deteriorating respiratory pattern (increasing work of breathing, falling saturation with a normal-appearing child, or a silent chest) because the candidate waits for an abnormal blood gas or a dramatic sign before intervening.
Trainees are taught to confirm with labs; in pediatric respiratory failure, clinical trajectory precedes gas abnormalities, and candidates anchor on a single reassuring value.
What to do instead
Treat the trend and the work of breathing as the primary data. In any stem with rising respiratory effort or a changing mental status, select the escalation (airway support, repositioning, foreign body maneuver) rather than the confirmatory test.
Answering pain-management items by selecting an opioid dose without addressing the multimodal and age-specific safety context (e.g., codeine and trampoline-like ultrarapid metabolizer risk in children, or opioid-sparing adjuncts, or the need for monitoring in a neonate).
Candidates reduce pain questions to 'pick the opioid' and do not screen for age-related pharmacogenomic and respiratory-depression risk that the stem is testing.
What to do instead
For every analgesic choice, check age, metabolizer risk (avoid codeine in young children), respiratory monitoring needs, and whether a non-opioid adjunct is the safer correct answer. Let the safety screen drive selection.
Misjudging the neonate or ex-premature infant's readiness for anesthesia and discharge because the candidate ignores postconceptual age, apnea risk, and fasting/feeding requirements specific to age.
Candidates apply term-infant rules to premature infants and overlook that postconceptual age, not chronological age, governs apnea risk and monitoring duration.
What to do instead
Convert every infant age in a stem to postconceptual age and apply the corresponding apnea-monitoring threshold and fasting interval. If the stem gives gestational age at birth and current age, compute postconceptual age before answering.
Selecting a monitoring or safety intervention without matching it to the specific failure mode being tested (e.g., choosing pulse oximetry when the scenario is about ventilation and the correct answer is capnography, or missing a medication-safety check such as a weight-based double-check or syringe labeling).
Candidates pick the most familiar monitor rather than the one that detects the physiologic problem in the stem; safety items are answered by general principle rather than by the specific error being prevented.
What to do instead
For monitoring items, name what each device detects and select the one that detects the stem's stated problem. For safety items, identify the exact error (wrong dose, wrong route, wrong patient) and choose the intervention that blocks that error, not a generic precaution.