Related Experiment Videos
Total occlusion of left main coronary artery in Orientals: profile of 4 cases
1Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia.
Insights
Total occlusion of the left main coronary artery (LMCA) is rare but serious. Survival hinges on collateral circulation, often necessitating urgent bypass surgery for LMCA disease.
Area of Science:
- Cardiology
- Vascular Surgery
Background:
- Left main coronary artery (LMCA) disease is a critical condition.
- Total LMCA occlusion is exceptionally rare.
Observation:
- Four Oriental cases of total LMCA occlusion presented with varied clinical histories.
- Patients experienced different durations and severities of angina pectoris.
- One patient had a history of myocardial infarction.
Findings:
- Survival in total LMCA occlusion is contingent upon adequate collateral circulation.
- LMCA disease frequently coexists with atherosclerosis in other coronary arteries.
Implications:
- Urgent coronary artery bypass grafting is often required for LMCA disease.
- Early diagnosis and surgical intervention are crucial for patient outcomes.
- Understanding diverse presentations of LMCA occlusion aids clinical management.
Abstract:
The authors report 4 Oriental cases of total occlusion of the left main coronary artery (LMCA) with differing presentations. The first patient had a twelve-year history of stable angina pectoris. The second patient had angina for a year, which became unstable two months prior to diagnosis. The third patient had myocardial infarction seven years ago and presented with a one-month history of rest angina. The fourth patient had stable effort angina for six years but presented with accelerated angina three months prior to diagnosis. The incidence of total occlusion of the LMCA is rare and survival depends on the existence of collateral circulation. In LMCA disease, there is usually disease in other parts of the coronary arterial tree, and hence, the need for urgent coronary bypass surgery.