transmyocardial revascularization


Also found in: Dictionary, Acronyms, Wikipedia.
Related to transmyocardial revascularization: Arterial revascularization

transmyocardial revascularization

Laser heart surgery Cardiovascular surgery A technique used for Pts with incapacitating heart disease, in which 15 to 30 1-mm in diameter holes are 'drilled' by laser into the myocardium, in an operation that takes 60–90 mins; indications for TMR are similar to those for repeat CABGs–ie, severe heart disease Pros No need for heart-lung machine; lower costs–CABG is $15,000 to $20,000, recuperation is shorter Mortality ±8% Outcome 1 yr post-surgery, 90% of Pts have improved to NYHA class 1 to 2 angina Cf CABG.

transmyocardial revascularization

Abbreviation: TMR
The use of a laser to bore tiny channels directly through the wall of the heart in an attempt to bring oxygen-rich blood from the left ventricular cavity to areas where the heart muscle is oxygen-deprived, or ischemic. TMR is an alternative to coronary bypass surgery or angioplasty, esp. in patients with complex plaques that would be difficult to reach with standard interventions or in patients who have already undergone many other procedures without effect.
Synonym: percutaneous myocardial revascularization
References in periodicals archive ?
Transmyocardial revascularization utilizing a holmium: YAG laser.
Improvement of myocardial contractility in a porcine model of chronic ischemia using a combined transmyocardial revascularization and gene therapy approach.
The first group is stable patients with refractory, severe angina who are not amenable to conventional revascularization and who can be treated solely with transmyocardial revascularization or maximal medical therapy.
For them the committee recommended adding transmyocardial revascularization to improve the likelihood of long-term angina relief (up to 5 years), reduce 30-day mortality and major adverse cardiac events, and improve 1-year exercise performance.
The recommendations for CABG plus transmyocardial revascularization rather than CABG alone were based on levels A and B evidence and were all class II recommendations encompassing conflicting evidence or diverging opinions.
The improvements in mortality and major adverse cardiac events seen at 30 days and in exercise performance at 1 year after CABG plus transmyocardial revascularization, compared with CABG alone, did not hold up at 5 years after treatment, Dr.
Headquartered in Franklin, Massachusetts, PLC pioneered the CO2 Heart Laser System, which cardiac surgeons use to perform CO2 transmyocardial revascularization (TMR) to alleviate symptoms of severe angina.
Even while procedures such as laser-assisted lead removal, excimer laser angioplasty and transmyocardial revascularization (TMR) offers great potential in the cardiology segment, surgeons remain unclear as to the clinical end points and long-term implications.
PLC Systems reported that the Center for Medicare and Medicaid Services (CMS) convened the Medicare Coverage Advisory Committee (MCAC) yesterday to review and discuss the evidence and clinical data regarding transmyocardial revascularization (TMR) as it relates to Medicare patients with severe angina.
Edwards Lifesciences (NYSE:EW) markets and distributes PLC's patent protected CO2 Heart Lasers, which a cardiac surgeon would utilize to perform transmyocardial revascularization (TMR).
CardioGenesis Corporation (BULLETIN BOARD: CGCP) , the market leader in surgical products and accessories used in angina-relieving Transmyocardial Revascularization (TMR) and Percutaneous Myocardial Revascularization (PMR) procedures, today announced that the Medicare Coverage Advisory Committee (MCAC) will meet on July 14, 2004 to review the clinical evidence regarding laser myocardial revascularization as a treatment option that is reasonable and necessary for Medicare patients.