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LMCA Lesions

Left Main Coronary Artery (LMCA) lesions are blockages in the main artery supplying blood to a large portion of the heart, requiring timely diagnosis and specialized treatment.

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Left Main Coronary Artery Lesions

Left main coronary artery (LMCA), despite its short length, is one of the most challenging areas for both cardiovascular surgeons and interventional cardiologists.
Significant LMCA disease is defined as greater than 50% angiographic narrowing of the vessel.
The LMCA is responsible for supplying approximately 75% of the left ventricular (LV) cardiac mass in patients with right dominant circulation and nearly 100% in patients with left dominant circulation.
Severe LMCA disease can significantly reduce blood flow to a large portion of the myocardium, placing patients at high risk for left ventricular dysfunction and arrhythmias.

Diagnosis of LMCA Disease

  • ✓ Most patients with LMCA disease are symptomatic.
  • ✓ Diagnosis is usually made by coronary angiography.
LMCA Treatments