Registered Cardiovascular Invasive Specialist (RCIS) Practice Test

What is the primary action of the laser as an interventional technique?

1. Cutting through muscle

2. Vaporizing plaque

3. Removing blood clots

4. Coagulating tissue

The correct answer is: Vaporizing plaque

The primary action of the laser as an interventional technique is vaporizing plaque. In cardiovascular procedures, lasers are utilized to target and precisely break down atherosclerotic plaques within blood vessels, which can help restore normal blood flow. This method is particularly beneficial because it minimizes damage to surrounding tissues while effectively eliminating blockages caused by plaque buildup. The unique energy of laser light can disrupt the molecular bonds within the plaque, turning it into gas or vapor, which can then be safely removed or absorbed by the body. This process is significantly effective in treating conditions such as coronary artery disease, where plaque accumulation poses a serious risk to cardiovascular health. Other techniques mentioned, such as cutting through muscle or coagulating tissue, do not directly relate to the primary purpose of lasers in interventional cardiology. While lasers can occasionally be used for coagulation or incision purposes, their main strength lies in their ability to vaporize the obstructive materials within arteries. Similarly, while removing blood clots is a critical procedure in cardiovascular care, this is typically addressed through mechanical means or medications rather than laser technology.