Chest Pain Evaluation

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Initial Triage - Red Alert Response

Rapid assessment: Airway, Breathing, Circulation, Disability, Exposure. Prioritize immediate life-threats and stabilize.

  • Red Flags:

    • Hemodynamic instability (SBP < 90 mmHg, HR < 50 or > 120 bpm)
    • Respiratory distress ($SpO_2 < extbf{90}%$, tachypnea)
    • Altered mental status
    • Sudden, severe, tearing/ripping pain (suspect Aortic Dissection)
    • Asymmetrical breath sounds, tracheal deviation (suspect Tension Pneumothorax)
    • Muffled heart sounds, JVD, pulsus paradoxus > 10 mmHg (Beck's triad for Tamponade)
  • Life-Threatening Causes (📌 PET MAC):

    • Pulmonary Embolism
    • Esophageal Rupture
    • Tension Pneumothorax
    • Myocardial Infarction (ACS)
    • Aortic Dissection
    • Cardiac Tamponade

Algorithm for Immediate Management of Unstable Chest Pain

⭐ For suspected ACS, administer Aspirin 300-325 mg (chewable) immediately, unless contraindicated.

Differential Diagnosis - Suspect Spectrum

CategoryConditionKey Features
Cardiac: IschemicAcute Coronary Syndrome (ACS)Substernal pressure, radiates arm/jaw, exertional, ECG changes, ↑enzymes.
Stable AnginaPredictable with exertion, relieved by rest/nitrates.
Cardiac: Non-IschemicPericarditisSharp, pleuritic, better leaning forward; friction rub. Diffuse ST elevation.
Aortic DissectionSudden, severe tearing pain to back; unequal BP/pulses. Widened mediastinum.
MyocarditisViral prodrome, fever; heart failure signs.
PulmonaryPulmonary Embolism (PE)Sudden dyspnea, pleuritic pain, tachypnea, hemoptysis; 📌 PERC/Wells.
PneumothoraxSudden, sharp pleuritic pain, dyspnea; ↓breath sounds.
Pneumonia/PleuritisPleuritic pain, cough, fever; consolidation.
GastrointestinalGERDBurning, retrosternal, postprandial; antacid relief.
Esophageal SpasmSubsternal, mimics angina; dysphagia.
MusculoskeletalCostochondritisLocalized tenderness, worse with movement/palpation.
Neuropathic/Psych.Herpes ZosterDermatomal burning pain; vesicular rash.
Panic DisorderChest tightness, palpitations, dyspnea; situational.
OthersMediastinitisSevere pain, fever; post-op/perforation.

Focused Evaluation - Clinical Clue Quest

  • History: Crucial for diagnosis.
    • 📌 OPQRST/SOCRATES for pain: Onset, Provocation/Palliation, Quality, Radiation, Severity, Timing.
    • Key Symptoms: Dyspnea, syncope, palpitations (cardiac?); fever (infection?); cough, hemoptysis (pulmonary?).
    • Risk Factors:
      • Cardiac: HTN, DM, HLD, smoking, family Hx.
      • PE: Immobility, surgery, malignancy, DVT Hx.
  • Physical Examination: Targeted search.
    • Vitals: BP (hypotension; >180/120 mmHg in dissection), HR, RR, Temp, SpO2.
    • General: Distress, diaphoresis.
      • Levine's sign. Levine's Sign and Other Chest Pain Gestures
    • Cardio: Murmurs, rubs, S3/S4; unequal pulses/BP (dissection).
    • Resp: Crackles (HF), wheeze, ↓ breath sounds (pneumothorax); pleural rub.
    • Abdo: Tenderness (GERD, referred).
    • MSK: Chest wall tenderness (costochondritis).

⭐ A normal physical exam does not rule out ACS; maintain high index of suspicion with suggestive history.

Diagnostic Workup - Test & Tell Toolkit

  • Initial Tests:
    • ECG: Ischemia (ST ↑/↓, T inversion), PE signs (S1Q3T3). ECG: S1Q3T3 pattern in pulmonary embolism
    • Cardiac Biomarkers: Troponin T/I (serial, ↑ in MI), CK-MB.
    • CXR: Pneumothorax, pneumonia, widened mediastinum (aortic dissection).
    • D-dimer: If PE suspected (Wells/Geneva), >500 ng/mL (age-adjusted).
  • Advanced Tests:
    • Echocardiography: Wall motion, valves, effusion.
    • CT: CTPA for PE, CT Aortogram for dissection.
    • Stress Test: Stable, low-intermediate CAD probability.

⭐ Troponin levels can rise 2-4 hours post-MI, peak at 12-24 hours, and remain elevated for 7-10 days.

High‑Yield Points - ⚡ Biggest Takeaways

  • ECG within 10 minutes is crucial for all acute chest pain.
  • Typical angina is substernal, exertional, and relieved by nitrates/rest.
  • Suspect aortic dissection with sudden, tearing pain radiating to the back.
  • Pulmonary embolism often presents with pleuritic pain and hypoxia.
  • Cardiac troponins are the gold standard biomarkers for MI.
  • TIMI/GRACE scores aid in ACS risk stratification and management.
  • Always rule out life-threatening causes first: ACS, PE, dissection, tamponade, tension pneumothorax.

Practice Questions: Chest Pain Evaluation

Test your understanding with these related questions

After a successful Total Hip Replacement a 59 year old patient developed severe chest pain. Echocardiography revealed reduced wall motion of right ventricle with slow flow across the tricuspid valve. Which of the following is most likely diagnosis?

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Flashcards: Chest Pain Evaluation

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McArdle disease is associated with painful _____ that occur with strenuous exercise

TAP TO REVEAL ANSWER

McArdle disease is associated with painful _____ that occur with strenuous exercise

muscle cramps

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