Iraqi Board Pediatrics common mistakes
Iraqi Board Pediatrics · Understand the traps and how to avoid them.
When a newborn's age is given only in days or weeks, the candidate applies term-infant thresholds (e.g., bilirubin nomogram for ≥38 weeks, hematocrit norms, glucose cutoffs) instead of first stratifying by gestational age and hours of life.
Neonatal values are gestational-age- and hour-specific, and candidates memorize a single 'normal' number rather than the stratified chart. The stem often buries gestational age in the first clause, so it gets skimmed.
What to do instead
Before answering any neonatal numeric question, write three headers on scratch paper: GA (preterm <37 wk / term / late preterm 34–36 wk), postnatal age in hours, and weight percentile. Assign the value only after all three are fixed. For jaundice, use the hour-specific threshold for the correct GA band; for hypoglycemia, use the <48 h versus ≥48 h cutoffs separately.
Treats every febrile infant under 3 months as needing a full sepsis workup and admission, or conversely discharges a 2-month-old with fever after a normal urine dipstick, without applying the age-banded algorithm (≤21 days, 22–28 days, 29–90 days) and the inflammatory-marker thresholds.
The 'fever in the young infant' pathway has been revised repeatedly, and candidates blend older rules (Rochester, Philadelphia) with current step-by-step approaches. Anxiety pushes toward over-investigation; familiarity with well-appearing infants pushes toward under-investigation.
What to do instead
Memorize one age-banded table with three columns: age band, mandatory tests (urine, blood, CSF), and disposition rule keyed to CRP/procalcitonin and urinalysis. Rehearse it against three stem archetypes: 18-day-old, 35-day-old, and 60-day-old. State the band aloud before choosing the answer.
Chooses the most abnormal laboratory value as the diagnosis (e.g., labels a child with a high TSH alone as primary hypothyroidism, or a low free T4 alone as central hypothyroidism) without checking whether the paired hormone is concordant and whether the clinical picture fits.
Endocrine questions are built on paired-axis logic, but candidates memorize isolated reference ranges and answer the number rather than the axis.
What to do instead
For every endocrine stem, draw the axis: hypothalamus → pituitary → target gland → feedback. Then classify as primary (target gland fails, tropic hormone high), central (tropic hormone low/inappropriately normal), or resistance (both high). Only then pick the diagnosis; use the clinical features (growth velocity, bone age, goiter, dysmorphism) to confirm.
Manages a child with diabetic ketoacidosis by giving a fluid bolus and starting insulin immediately at a high rate, or by using bicarbonate for a pH below 7.1, without accounting for the cerebral edema risk from rapid osmolar shifts.
Adult DKA protocols and instinctive 'fix the number' reasoning dominate; the pediatric principle that osmolality and glucose must fall slowly is counterintuitive under time pressure.
What to do instead
Apply the pediatric DKA sequence in order: isotonic bolus only if shock, then maintenance-plus-deficit over 48 h, insulin infusion started after fluids and only when potassium is known and repleted, no bicarbonate, and neurologic checks hourly. When a stem shows headache, bradycardia, hypertension, or falling saturation during DKA treatment, select cerebral edema and mannitol or hypertonic saline immediately.
Interprets a pediatric ECG using adult criteria - reading a heart rate of 130 in a 2-year-old as tachycardia, calling an axis of +120 degrees abnormal in a neonate, or measuring the QT interval without correcting for the fast infant rate.
Adult cardiology teaching is more familiar and gets over-applied; normal neonatal right-axis dominance and physiologic sinus arrhythmia are not intuitive.
What to do instead
Build a five-step pediatric ECG routine: rate for age, rhythm, axis for age, intervals (PR, QRS, QTc by Bazett with the infant upper limit near 0.45–0.46 s), and hypertrophy voltages by age. Always state the age-specific normal range before labeling an abnormality. If the stem describes a structurally normal heart with an isolated finding, check whether it is a known normal variant first.
In a child with a first febrile seizure, orders an EEG, neuroimaging, and lumbar puncture for every case, or starts daily anticonvulsant therapy after a single simple febrile seizure.
Fear of missing meningitis and parental pressure drive over-investigation, while the evidence-based distinction between simple and complex febrile seizures is under-rehearsed.
What to do instead
Classify first: simple (generalized, <15 min, once in 24 h, age 6 months–5 years, no prior neurologic deficit) versus complex. For simple febrile seizures, no EEG, no imaging, no routine LP, and no daily anticonvulsant; treat the fever source and counsel. Reserve LP for meningeal signs, pretreatment antibiotics, or age under 6–12 months with incomplete immunization.
Diagnoses asthma in a 10-month-old with recurrent wheeze and starts inhaled corticosteroids, or labels every wheezing preschooler as asthmatic without a therapeutic trial or consideration of alternative diagnoses.
The asthma label is applied loosely because the differential (viral wheeze, foreign body, aspiration, cystic fibrosis, vascular ring, GERD-related cough) is long and the stem often gives only 'recurrent wheeze'.
What to do instead
For wheeze under 2 years, run a differential checklist: onset pattern, feeding relation, choking history, failure to thrive, clubbing, focal findings, and response to bronchodilator. Use a formal probability approach (e.g., asthma predictive index features: frequent wheeze, atopy, parental asthma, eosinophilia) and reserve controller therapy for recurrent, bronchodilator-responsive wheeze after excluding structural and aspiration causes.
In a child with suspected bacterial meningitis, delays antibiotics until after lumbar puncture and neuroimaging, or gives a partial antibiotic dose 'to cover' while awaiting transfer.
The sequence taught in some settings puts diagnostics first, and candidates fear obscuring CSF findings more than they fear delay in a rapidly progressive infection.
What to do instead
Fix the order: blood cultures, then empiric IV antibiotics (plus dexamethasone before or with the first dose) immediately, then LP when safe. Defer LP only for signs of raised intracranial pressure, focal deficit, shock, or coagulopathy - and treat first in those cases. Never give a subtherapeutic dose; if transferring, give the full empiric regimen.
In a child with acute gastroenteritis and some dehydration, chooses IV fluids for all cases, or uses hypotonic maintenance fluid and does not reassess electrolytes, ignoring oral rehydration and the risk of hyponatremia.
Hospital-based training biases toward IV therapy, and the oral rehydration solution composition and the 50–100 mL/kg over 3–4 h rule are less familiar than the drip rate.
What to do instead
Use a dehydration ladder: no dehydration → oral rehydration solution 10 mL/kg per loose stool; some (5–10%) → ORS 50–100 mL/kg over 3–4 h with reassessment; severe → isotonic bolus 20 mL/kg. For maintenance IV use isotonic fluid with dextrose, not hypotonic; check sodium, potassium, and glucose in any child needing IV therapy.
When a child presents with pallor and anemia, treats with iron before establishing the red cell indices and reticulocyte count, or orders a bone marrow aspirate for a well child with microcytic anemia and a normal examination.
Iron deficiency is common, so the label is applied reflexively; the thalassemia trait versus iron deficiency distinction and the meaning of a low versus high reticulocyte count are not systematically applied.
What to do instead
Follow a fixed sequence: hemoglobin and MCV/MCH first, then reticulocyte count, then smear and iron studies (ferritin, TIBC, transferrin saturation). High RDW with low ferritin favors iron deficiency; normal RDW with target cells and a normal or high ferritin favors thalassemia trait (confirm with hemoglobin electrophoresis). Reserve marrow examination for unexplained cytopenias, suspected leukemia, or failure of appropriate therapy.