Examen Único de Residencias Córdoba (Medicina) common mistakes
Examen Único de Residencias Córdoba (Medicina) · Understand the traps and how to avoid them.
Reading the stem's clinical vignette once and jumping to the answer that matches the most familiar diagnosis, without checking whether the question asks for the next step, the best initial test, or the definitive treatment.
The single-best-answer format rewards the option that answers the specific task asked; candidates pattern-match on the disease name and select a true statement that answers a different question.
What to do instead
Before looking at the options, write the exact task in three words (e.g., 'next step', 'best test', 'most likely'). Then eliminate any option that is true but answers a different task.
In trauma and resuscitation vignettes, choosing the definitive management (e.g., laparotomy, thrombolysis, surgery) instead of the immediate stabilizing action when the patient is described as unstable.
Candidates conflate 'what the patient ultimately needs' with 'what you do first', and the exam deliberately offers both as plausible options.
What to do instead
Apply an ABC/stabilization filter first: if the patient is unstable, the answer must be an immediate bedside action (airway, fluids, blood, bedside procedure), not imaging or definitive repair.
Ignoring normal values given in the stem and answering from memory of a textbook range, for example calling a pH or a hemoglobin abnormal when the stem's own reference range differs.
Candidates memorize thresholds but do not read the reference values printed in the vignette, which are authoritative for that question.
What to do instead
Always compare the given lab value to the reference range printed in the same stem; if none is printed, use the standard adult/age-specific range and state it to yourself before answering.
Treating pediatric dosing, fluid, and vital-sign questions with adult rules of thumb, particularly for neonates and infants.
Adult-dominated study habits carry over; candidates forget weight-based dosing, different normal respiratory and heart rates by age, and the higher maintenance fluid needs per kilogram in small children.
What to do instead
For every pediatric item, first state the patient's age and weight category, then recall the age-specific normal range and the weight-based formula before evaluating options.
Confusing incidence with prevalence, and relative risk with attributable risk or odds ratio, when interpreting a study or surveillance scenario.
The terms are taught together and the distractors are numerically plausible; candidates compute the wrong measure or mislabel the same number.
What to do instead
Write the 2x2 table from the stem before computing anything, and label the numerator and denominator explicitly (new cases/population at risk = incidence; existing cases/total = prevalence).
Selecting the scientifically correct option in bioethics items instead of the option that reflects the patient's autonomous decision or the legally required procedure.
Candidates answer as clinicians ('the best medical choice') when the question tests autonomy, informed consent, confidentiality, or reporting obligations.
What to do instead
In bioethics items, identify which principle the stem is testing (autonomy, beneficence, justice, confidentiality) and choose the option consistent with that principle and with Argentine legal norms, even if it is not the best clinical outcome.
Missing the key discriminator in a differential-diagnosis vignette (e.g., time course, fever pattern, unilateral vs bilateral, sudden vs gradual onset) and choosing a diagnosis supported only by the general picture.
Candidates focus on the shared features of the differential and skim over the one detail the examiner inserted to separate the options.
What to do instead
Underline the discriminating detail in the stem (onset, laterality, duration, associated symptom) and require the chosen option to explain that specific detail, not just the overall syndrome.
In obstetric emergencies, delaying the answer by choosing ultrasound or lab confirmation when the vignette describes a life-threatening situation requiring immediate intervention (e.g., eclampsia, postpartum hemorrhage, shoulder dystocia).
Candidates default to confirmatory testing out of caution, but obstetric emergency questions reward immediate clinical management.
What to do instead
For obstetric emergencies, ask 'is this a clinical diagnosis?'; if yes, choose the immediate treatment (magnesium sulfate, uterine massage plus uterotonics, McRoberts maneuver) rather than imaging.
Misreading negatively worded or 'EXCEPT' questions and choosing the one true statement instead of the exception.
Under time pressure, candidates scan for a correct-sounding option and skip the negation at the end of the stem.
What to do instead
Circle or mentally flag negation words (EXCEPT, NOT, incorrect, least likely) before reading options; after choosing, re-read the stem and verify the answer satisfies the negation.
Running out of time because the candidate spends too long on difficult calculation or basic-science items and leaves later clinical questions unanswered or rushed.
Items are not ordered by difficulty, and candidates treat every question as equally costly instead of budgeting time.
What to do instead
Set a per-question time budget, mark and skip any item exceeding it, and reserve the final minutes for flagged items and for ensuring every question has an answer (no blank responses).