Laser surgery in enclosed spaces: a review.

Area of Science:

• Cardiovascular Surgery
• Medical Laser Applications
• Biomedical Engineering

Background:

• Atherosclerosis and arterial calcification pose significant clinical challenges.
• Percutaneous interventions for arterial obstructions are limited by vessel characteristics.
• Laser technology offers a potential modality for precise arterial interventions.

Purpose of the Study:

• To evaluate the efficacy and safety of argon and CO2 laser applications in various arterial conditions.
• To explore the potential of laser therapy for treating induced and human arterial obstructions.
• To identify strategies for mitigating adverse events associated with laser angioplasty.

Main Methods:

• In vitro and in vivo experiments were conducted on arteries from dogs, rabbits, guinea pigs, and humans.
• Laser radiation (argon and CO2) was applied directly and indirectly, including via specialized catheters.
• Procedures aimed to induce aortic insufficiency, open pulmonary stenosis, and clear carotid, coronary, and peripheral artery obstructions.

Main Results:

• Laser applications were tested on normal, atheromatous, and calcified arteries.
• Successful desobstruction was achieved in induced canine and human peripheral arterial models.
• A significant complication rate of 50% arterial wall perforation was observed across all experimental groups.

Conclusions:

• Laser therapy demonstrates potential for arterial recanalization and stenosis treatment.
• Arterial wall perforation is a major limitation requiring mitigation strategies.
• Recommendations include improved laser beam guidance, specialized catheter design, optical-computer integration for calcification detection, and targeted dye-enhanced laser therapy.