TEP Pediatria common mistakes
TEP Pediatria · Understand the traps and how to avoid them.
When a newborn presents with respiratory distress, candidates immediately assign a respiratory cause and skip the step of distinguishing transient tachypnea of the newborn, respiratory distress syndrome, meconium aspiration, and congenital pneumonia by gestational age, onset timing, and chest radiograph pattern, then answer a management question built on the wrong diagnosis.
Neonatal respiratory distress has a short differential and candidates pattern-match to the most familiar entity rather than working through the discriminators, and the clock (onset within hours versus first day versus progressive over days) is underused.
What to do instead
Before answering, write the four discriminators explicitly: gestational age, timing of onset, response to supplemental oxygen, and radiographic pattern. Then eliminate options that conflict with any one discriminator rather than choosing the most familiar label.
Candidates manage a febrile infant by gestalt rather than by age band, applying the same workup to a 21-day-old and a 3-month-old, or omitting the full sepsis evaluation in an infant under 28 days who looks well.
The age-stratified algorithms are memorized as a blur, and the well appearance of the young infant creates false reassurance because candidates do not hold the rule that young age overrides appearance.
What to do instead
Build a one-line age ladder (0-28 days, 29-90 days, 3-36 months) with the required tests and disposition for each, and rehearse it until the age band is the first thing extracted from every fever vignette.
In a child with dehydration from gastroenteritis, candidates choose an intravenous fluid plan or an incorrect bolus volume instead of applying oral rehydration as first-line therapy for mild to moderate dehydration, and they misclassify severity by eyeballing rather than using the validated clinical scales.
Hospital-based thinking and the dramatic appearance of vomiting bias toward intravenous therapy, and the percentage-dehydration categories are recalled imprecisely.
What to do instead
Anchor on the rule that mild to moderate dehydration is treated orally or by nasogastric route and reserve intravenous fluids for severe dehydration, shock, or failed oral trial; practice assigning a dehydration percentage from a written set of signs before reading the answer options.
Candidates interpret a pediatric electrocardiogram using adult rate and interval norms, missing sinus arrhythmia as normal, mislabeling a benign murmur as pathologic, or failing to recognize that supraventricular tachycardia in infants is often subtle and rate-dependent rather than accompanied by dramatic symptoms.
Adult cardiology frames dominate prior training, and pediatric rate norms change continuously with age, so candidates default to a single memorized set of values.
What to do instead
Memorize age-specific rate and QTc ranges as a table and apply the age from the vignette before interpreting any strip; separately memorize the handful of murmur features that mark pathology (diastolic, continuous, harsh, radiating, associated with failure to thrive or cyanosis).
When a child fails to gain weight, candidates label it failure to thrive and jump to an organic workup, ordering extensive laboratory panels before addressing caloric intake, feeding technique, and psychosocial factors, or conversely dismissing a red flag such as a falling head circumference as nonorganic.
The word failure to thrive triggers an organic reflex, and candidates do not systematically separate weight-only faltering from global growth failure with head circumference involvement.
What to do instead
Always plot weight, length, and head circumference on the correct chart first and classify the pattern; if only weight is affected, screen intake and psychosocial factors before laboratory testing, and escalate to organic workup when length or head circumference falls or red flags are present.
Candidates treat a febrile seizure question as a general seizure question, recommending electroencephalography, neuroimaging, or long-term anticonvulsant therapy for a simple febrile seizure, or failing to distinguish simple from complex by duration, focality, and recurrence within 24 hours.
Epilepsy management pathways are overlearned and bleed into the febrile seizure scenario, and the simple versus complex criteria are recalled loosely.
What to do instead
Fix the simple seizure definition as a single generalized event under 15 minutes in a child 6 months to 5 years with no prior neurologic abnormality, and memorize that simple febrile seizures require no routine electroencephalography, imaging, or maintenance therapy; apply the complex criteria only when one element is explicitly violated.
In a child with suspected meningitis, candidates order neuroimaging before lumbar puncture without checking for the specific contraindications, or delay antibiotics until the lumbar puncture is completed, or misread cerebrospinal fluid values because they apply adult thresholds.
The sequence of imaging, puncture, and antibiotics is taught as a rigid order, and pediatric cerebrospinal fluid norms by age are not firmly held.
What to do instead
Memorize the short contraindication list for immediate lumbar puncture (signs of raised intracranial pressure, focal deficit, hemodynamic instability, coagulopathy, skin infection at the site) and the rule that antibiotics are given first when the puncture is delayed; keep a pediatric cell count and protein reference by age band.
Candidates assess a child with an acute asthma exacerbation and select a treatment plan without grading severity, omitting ipratropium or systemic corticosteroids in moderate to severe episodes, or choosing a discharge plan that lacks controller therapy and an action plan.
Severity grading relies on work of breath, speech, and oxygen saturation rather than a single number, and candidates skip the grading step to reach the familiar medication list.
What to do instead
Grade severity explicitly from the vignette using speech, accessory muscle use, wheeze intensity, respiratory rate, and oxygen saturation before reading options, then apply the rule that moderate to severe exacerbations receive repeated short-acting bronchodilators plus systemic corticosteroids and that every discharge includes inhaled corticosteroid and a written action plan.
Candidates evaluate a child with a possible urinary tract infection but skip the urine collection method, treating a bag specimen culture as diagnostic, or they fail to pursue imaging after a febrile urinary tract infection in a young child because the child improved clinically.
The collection method feels like a nursing detail, and the link between febrile urinary tract infection and structural urinary tract abnormality is underweighted.
What to do instead
State the collection method for every urine question and treat bag specimens as useful only for excluding infection when negative; memorize that febrile urinary tract infection in infants and young children warrants renal and bladder ultrasonography, with voiding cystourethrography reserved for specific indications such as recurrence or abnormal ultrasound.
Candidates answer a hematology vignette by pattern-matching a low hemoglobin to iron deficiency without checking the red cell indices and the response to a therapeutic iron trial, or they interpret a neonatal jaundice value without applying the hour-specific nomogram and the age in hours.
Iron deficiency is the most common pediatric anemia, so it becomes a default, and neonatal bilirubin is compared against a single threshold rather than against age in hours and risk factors.
What to do instead
For anemia, require microcytosis with a low mean corpuscular volume and a documented response to iron before committing to iron deficiency, and consider thalassemia trait when the red cell count is high; for neonatal jaundice, always extract age in hours and risk factors and compare bilirubin against the hour-specific threshold before choosing phototherapy or exchange.