TEC Cardiologia common mistakes
TEC Cardiologia · Understand the traps and how to avoid them.
Reading the clinical vignette once and jumping to the answer that matches the first striking finding (for example, choosing a diagnosis based on a single elevated troponin or a single abnormal ECG lead) instead of reconciling the whole presentation.
Time pressure and the familiarity of the first salient data point create premature closure; the candidate stops generating alternatives before checking whether the data actually fit the chosen diagnosis.
What to do instead
Before committing, write the two or three key discriminating findings and explicitly test the chosen diagnosis against each one; if any key finding is unexplained, reopen the differential. Practice by forcing yourself to name one plausible alternative and state why it is less likely.
Confusing acute coronary syndrome with other causes of chest pain and ST-segment abnormality, such as pericarditis, early repolarization, or aortic dissection, by relying on the presence of ST elevation alone.
The pattern of ST elevation is memorized as synonymous with infarction, so the candidate does not check the distribution, reciprocal changes, PR depression, or the clinical context (pleuritic pain, positional pain, pulse deficit).
What to do instead
Build a comparison table for ST-elevation patterns: territorial distribution with reciprocal depression versus diffuse elevation with PR depression versus concave early repolarization. For each vignette, consciously verify the presence or absence of reciprocal changes before selecting a diagnosis.
Mismanaging the distinction between heart failure with reduced and preserved ejection fraction, applying reduced-EF trial evidence and drug escalation to a patient with preserved EF and vice versa.
The candidate anchors on the word 'heart failure' and recalls a single treatment bundle, ignoring the reported ejection fraction and the comorbidities typical of preserved EF.
What to do instead
Make it a habit to underline the ejection fraction and the relevant comorbidity in every heart failure question before looking at the options; then select therapy according to the phenotype, and treat the underlying cause in preserved EF.
Misclassifying arrhythmias because the candidate assesses rate before rhythm, or assumes a narrow-complex tachycardia is always sinus in origin.
Automatic rate calculation and pattern recognition dominate, so atrial flutter with variable block, atrial tachycardia, or a regular narrow-complex tachycardia are not distinguished by P-wave morphology and relationship to the QRS.
What to do instead
Adopt a fixed sequence: rate, regularity, QRS width, then P-wave presence, morphology, and relationship to QRS. Apply it to every rhythm strip and state each step aloud or in writing before answering.
Choosing an anticoagulation or antiplatelet strategy without first calculating the bleeding and thrombotic risk scores or checking renal function and drug interactions.
The candidate recalls the general indication for anticoagulation but skips the quantitative risk assessment and the contraindication screen that determine the specific agent and dose.
What to do instead
For every anticoagulation question, explicitly compute or state the relevant risk score, check creatinine clearance and hepatic function, and note interacting drugs before selecting the agent and dose.
Misreading the timing and sequence in acute myocardial infarction management, such as selecting an inappropriate reperfusion strategy or misordering adjunctive therapy relative to reperfusion.
Guideline recommendations are remembered as a bundle without the time windows and the conditions (symptom onset duration, ECG findings, availability of catheterization) that determine the choice.
What to do instead
Create a decision timeline from symptom onset with the thresholds that change management, and rehearse it for typical vignette scenarios; in each question, state the elapsed time and the reperfusion capability before choosing the strategy.
Attributing syncope to a cardiac cause without evaluating the high-risk features that actually determine disposition, or conversely discharging a patient with red-flag features.
The candidate focuses on identifying a specific diagnosis rather than on risk stratification, and does not systematically check for exertional syncope, structural heart disease, family history of sudden death, or abnormal ECG.
What to do instead
Use a fixed red-flag checklist for every syncope vignette and let the presence or absence of those features drive the disposition answer, rather than the presumed mechanism alone.
Confusing echocardiographic and hemodynamic findings of valvular disease, for example mixing the signs of aortic stenosis with those of mitral regurgitation, or misinterpreting the severity indices.
Valve lesions are learned as separate lists of findings, and the candidate does not connect the murmur timing, the pressure gradients, the chamber enlargement, and the resulting symptoms into one coherent picture.
What to do instead
For each valve lesion, practice linking four elements together: murmur characteristics, the key imaging or hemodynamic measure, the chamber consequence, and the classic symptom triad. Answer only after all four are consistent.
Ignoring the interaction between cardiac disease and pregnancy, or between cardiac drugs and common comorbidities, when selecting management in a vignette that includes such a context.
The candidate treats the cardiac problem in isolation and does not screen the options for agents or interventions that are contraindicated in pregnancy or that worsen a coexisting condition.
What to do instead
Before answering, scan the vignette for contextual modifiers (pregnancy, renal or hepatic disease, asthma, diabetes) and eliminate any option that is unsafe in that context; keep a short list of cardiac drugs contraindicated in pregnancy.
Failing to apply secondary prevention and long-term follow-up recommendations after an acute cardiac event, selecting only the acute intervention and neglecting the discharge regimen.
The acute management dominates attention, and the question stem may ask about the next step or long-term plan, which the candidate answers with the acute intervention instead.
What to do instead
Re-read the final sentence of the stem to confirm what is being asked (immediate versus long-term), and maintain a standard secondary prevention checklist (antiplatelet therapy, statin, beta-blocker, renin-angiotensin blockade, rehabilitation, and risk factor control) that you apply to every post-event question.