Transmyocardial revascularization or TMR is a therapeutic procedure that uses a laser beam to create small holes in the heart muscle (myocardium) of the left ventricle. TMR may be recommended for patients with chest pain (angina) that does not react to medication or who are ineligible for other treatments such as coronary artery bypass graft (CABG) surgery.
It may also be employed as an adjunct to minimally invasive CABG surgery to increase the procedure's effectiveness. Studies have shown that TMR reduces the severity of symptoms and increases a patient’s capability for exercise. However, TMR is not a cure for coronary artery disease, and there is no confirmation that it can offer people a longer life.
The risk of complications is low, but all surgeries carry at least a small risk of complications, these complications could include the following
• Return of the angina
• Damage to the mitral valve (located between the left atrium and the left ventricle)
• Heart failure
• Arrhythmia (an abnormal heart rhythm)
• Damage to the great vessels (the aorta and/or the pulmonary artery or the coronary
arteries)
• Hypotension (low blood pressure)
• Cardiac tamponade (a dangerous accumulation of blood in the sac around the heart)
• Heart attack
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