II. Risk Factors

IV. Criteria: High Likelihood

  1. Known Coronary Artery Disease history
  2. Typical Anginal symptoms
    1. Men over age 60
    2. Women over age 70
  3. Characteristic symptoms
    1. Chest Pain radiating to the right arm or Shoulder (LR+ 4.7)
    2. Chest Pain radiating to both arms strongly suggests MI (LR+ 4.1 to 7.1)
    3. Exertional Chest Pain (LR+ 2.4)
    4. Diaphoresis (LR 2.0)
    5. Nausea and Vomiting (LR 1.9)
  4. Pain worse than prior Angina pain or similar to prior Myocardial Infarction (LR 1.8)
  5. History of Variant Angina
  6. Chest Pain with acute Congestive Heart Failure signs
    1. New Mitral Regurgitation murmur
    2. Hypotension
    3. Pulmonary Rales
    4. New S3 Gallop rhythm
    5. New Jugular Venous Distention
  7. EKG in Cardiac Ischemia
    1. Transient Electrocardiogram changes
      1. Associated with pain or hemodynamic changes
    2. ST segment increase or decrease over 1 mm
    3. Deep symmetric T-wave inversion
      1. Occurs in multiple precordial leads

V. Criteria: Intermediate Likelihood (high likelihood features absent)

  1. Typical Anginal symptoms
    1. Men under age 60
    2. Women under age 70
  2. Diabetes Mellitus and Chest Pain
  3. Cardiac Risk Factors (over 1) and Atypical Chest Pain
    1. Pleuritic Chest Pain
    2. Chest Pain primarily in lower or mid Abdomen
    3. Chest Pain localizable with one finger
    4. Reproducible Chest Pain
      1. Exacerbated by movement or palpation of chest wall
    5. Chest Pain is constant and lasts for days
    6. Chest Pain duration only for a few seconds
    7. Chest Pain radiates into legs
  4. Extra-cardiac vascular disease
  5. EKG in Cardiac Ischemia
    1. ST depression of 0.05-1mm
    2. T Wave Inversion of over 1 mm
      1. Occurs in leads with dominant R-waves

VI. Criteria: Low Likelihood

  1. Can often be discharged from ER with recheck with 72 hours
  2. Absence of Intermediate likelihood symptoms AND
    1. Age under 60 years old
    2. Atypical Chest Pain
      1. No radiation to arm, Shoulder, neck or jaw
      2. Reproducible Chest Pain on palpation (LR+ 0.3)
      3. Positional Chest Pain (LR 0.3)
      4. No pressure sensation
        1. Pleuritic Chest Pain (LR+ 0.2)
        2. Sharp Chest Pain (LR+ 0.3)
    3. Only one Cardiac Risk Factor (not Diabetes Mellitus)
    4. Electrocardiogram normal
      1. T-waves flat or inversion of less than 1 mm
      2. Occurs in dominant R Waves leads

VII. References

  1. Velasco, Lee, Chandra (2019) Crit Dec Emerg Med 33(1): 3-10

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