Diego Salazar

Attempt review · why, not just what

Diego Salazar · Acute Dyspnea After Arthroplasty

PGY-1 Internal Medicine · Resident

Diego reached a diagnosis but missed safety-critical signal — the errors below trace back to unpinned red flags and context.

Why these went wrong

Each error traced back to the pin decisions that caused it

Safety

Omitted Aortic dissection — a can't-miss diagnosis

BecauseNever pinned “Oxygen Saturation” and “Tachypnoeic and anxious”, so nothing prompted the dangerous-alternative sweep for this presentation.

Oxygen Saturation· Safety red flagTachypnoeic and anxious· Safety red flag

Treat Aortic dissection as a must-exclude for this presentation — pin the context that makes it possible, then rule it in or out explicitly.

Safety

Selected a contraindicated action — Systemic thrombolysis (alteplase) in a haemodynamically s…

BecauseReached a plausible diagnosis but crossed a safety boundary in management — a knowledge-vs-action gap rather than a knowledge gap.

Rehearse the safety boundary for this presentation and the safe alternative before committing a plan.

Pin decisions vs. what mattered

The evidence behind the causal read

Pinned signalMissed signalFixated on distractor

Diagnostic clue

  • Pleuritic chest painPinned
  • Acute dyspneaPinned
  • Unilateral calf swellingPinned
  • Tachycardic, regular, no murmurPinned
  • Clear chest on auscultationPinned
  • Swollen, tender right calfPinned
  • D-dimerPinned
  • CT pulmonary angiography (CTPA)Pinned

Safety red flag

  • Heart RatePinned
  • Respiratory RatePinned
  • Oxygen SaturationMissed
  • Tachypnoeic and anxiousMissed
  • 12-lead ECG and continuous telemetry with repeat saturationsPinned

Context factor

  • Systolic Blood PressurePinned

Management modifier

  • Baseline CBC, creatinine and coagulation panelPinned
  • Platelet CountPinned
  • CreatininePinned

Distractor

  • TemperatureCorrectly ignored
  • HemoglobinCorrectly ignored

Differential outcome

Submitted vs. expected ranking

DiagnosisExpectedLearnerOutcome
Pulmonary embolismWorking diagnosis#1#1Correct
Acute coronary syndromeCan't-miss#2#2Correct
Aortic dissectionCan't-miss#4Omitted
Community-acquired pneumoniaReasonable alternative#3#3Correct
Spontaneous pneumothoraxReasonable alternative#5#5Correct

Pin recall, by intent

  • Diagnostic clue
    8/8
  • Safety red flag
    3/5
  • Context factor
    1/1
  • Management modifier
    3/3
  • Distractor
    0/2pinned