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6 Causes of Life-Threatening Chest Pain

mLpenguin

• 2 min read
6 Causes of Life-Threatening Chest Pain
Photo by Sasun Bughdaryan / Unsplash

There are 3 heart causes, 2 lung causes, and one esophageal cause

ACS/MI

Clinical Presentation:

  • Chest pain (pressure, squeezing), radiates to left arm or jaw
  • Diaphoresis, dyspnea, nausea, palpitations
  • May be silent in diabetics or elderly

Diagnostic Labs/Imaging:

  • ECG: ST-elevation (STEMI), ST-depression or T-wave inversion (NSTEMI/UA)
  • Cardiac troponins: Elevated in MI
    • Onset (Rise):
      • Begins to rise 3–6 hours after myocardial injury
    • Peak Levels:
      • Peak at around 12–24 hours
    • Duration (Return to Normal):
      • Troponin I (TnI): Returns to baseline in 5–10 days
      • Troponin T (TnT): Can remain elevated for 10–14 days
    • High-sensitivity troponin (hs-cTn): Can detect much smaller elevations and rise earlier (as soon as 1–2 hours post-injury).
  • Chest X-ray: To rule out other causes

Management:

  • MONA: Morphine, Oxygen, Nitrates, Aspirin
  • Dual antiplatelet therapy: Aspirin + P2Y12 inhibitor (e.g. clopidogrel)
  • Anticoagulation: Heparin or LMWH
  • Reperfusion: PCI within 90 minutes (STEMI) or thrombolysis if PCI unavailable
  • Additional: Beta-blockers, statins, ACE inhibitors post-stabilization

Aortic Dissection

Clinical Presentation:

  • Sudden, tearing chest or back pain
  • Blood pressure discrepancy between arms
  • Neurologic deficits, syncope, or stroke-like symptoms

Diagnostic Labs/Imaging:

  • CT angiography (gold standard)
  • Transesophageal echocardiogram (TEE) if unstable
  • Chest X-ray: Widened mediastinum
  • ECG: Often normal or nonspecific
  • Troponins may be mildly elevated

Management:

  • Type A (ascending aorta): Emergency surgery
  • Type B (descending): Medical management unless complications arise
  • Blood pressure control: Beta-blockers (first-line), +/- vasodilators (e.g., nitroprusside)
  • Pain control with IV opioids

Pericardial Effusion/Cardiac Tamponade

Clinical Presentation:

  • Dyspnea, chest pain, fatigue
  • Beck’s triad: Hypotension, muffled heart sounds, JVD
  • Pulsus paradoxus (>10 mmHg drop in systolic BP during inspiration)

Diagnostic Labs/Imaging:

  • ECG: Low voltage QRS, electrical alternans
  • Echocardiogram: Confirms effusion and tamponade physiology
  • Chest X-ray: Enlarged, “water bottle” shaped cardiac silhouette (if effusion is large)

Management:

  • Emergent pericardiocentesis
  • IV fluids to maintain preload (temporary measure)
  • Treat underlying cause (e.g., infection, malignancy)
  • Surgical pericardial window for recurrent effusions

Tension Pneumothorax

Clinical Presentation:

  • Sudden onset dyspnea and pleuritic chest pain
  • Tracheal deviation (away from affected side)
  • Decreased or absent breath sounds on affected side
  • Hypotension, distended neck veins (JVD), cyanosis

Diagnostic Labs/Imaging:

  • Clinical diagnosis: Do not wait for imaging
  • Chest X-ray (after decompression): Collapsed lung, mediastinal shift
  • ABG: Hypoxia, possible respiratory acidosis

Management:

  • Immediate needle decompression (2nd intercostal space, midclavicular line)
  • Follow with chest tube placement (5th intercostal space, midaxillary line)
  • Oxygen supplementation as needed

Pulmonary Embolism

Clinical Presentation:

  • Sudden onset dyspnea, pleuritic chest pain, hemoptysis
  • Tachypnea, tachycardia, hypoxia
  • May have signs of DVT: leg swelling/pain
  • In massive PE: Hypotension and syncope

Diagnostic Labs/Imaging:

  • D-dimer: Useful to rule out in low-risk patients
  • CT pulmonary angiography: Gold standard for diagnosis
  • V/Q scan: If contrast contraindicated (e.g., renal failure)
  • ECG: Sinus tachycardia, S1Q3T3 pattern, right heart strain
  • Troponin, BNP: May be elevated in massive PE

Management:

  • Anticoagulation: Heparin → DOAC or warfarin
  • Thrombolytics: For massive PE with hemodynamic instability
  • IVC filter: If anticoagulation contraindicated
  • Oxygen and IV fluids (cautiously) in hypotensive patients

Boerhaave Syndrome

Clinical Presentation:

  • Sudden severe chest pain after forceful vomiting
  • Mackler’s triad: Vomiting, chest pain, subcutaneous emphysema
  • Dyspnea, fever, signs of sepsis
  • May have mediastinal crunch (Hamman’s sign)

Diagnostic Labs/Imaging:

  • CT chest with contrast: Shows pneumomediastinum, esophageal leak
  • Contrast esophagogram (with water-soluble contrast like Gastrografin)
  • Chest X-ray: Mediastinal air, pleural effusion (usually left-sided)

Management:

  • NPO (nothing by mouth)
  • Broad-spectrum IV antibiotics
  • IV fluids and supportive care
  • Emergency surgical repair (primary treatment for full-thickness rupture)
  • Endoscopic stenting may be used in select stable patients