Transmyocardial laser revascularization: a qualitative systematic review

Area of Science:

• Cardiovascular Surgery
• Interventional Cardiology
• Medical Technology Assessment

Background:

• Transmyocardial laser revascularization (TMLR) is a therapeutic option for patients with end-stage coronary artery disease.
• Medically refractory angina remains a significant challenge, necessitating novel treatment approaches.

Purpose of the Study:

• To provide an evidence-based evaluation of transmyocardial laser revascularization (TMLR).
• To assist healthcare institutions in making informed decisions regarding resource allocation for TMLR.

Main Methods:

• A qualitative systematic review of the clinical literature was conducted.
• Searched major databases (MEDLINE, BIOSIS, EMBASE, SciSearch, Current Contents) for TMLR articles published from January 1985 to March 1997.
• Clinical studies were analyzed and summarized in evidence tables.

Main Results:

• Evidence includes approximately 2000 patients treated globally, primarily for refractory angina.
• Preliminary data indicate TMLR has an acceptable survival rate and relieves angina in ~75% of patients.
• Data on improved myocardial perfusion, cardiac function, or prognosis are inconclusive; the mechanism of angina relief is unknown.

Conclusions:

• Early evidence suggests TMLR may be beneficial for end-stage coronary artery disease.
• Definitive recommendations require analysis of ongoing randomized trials, post-market studies, and payer acceptance.
• Further critical evaluation is necessary to establish TMLR's definitive role in clinical practice.