Like many other medical fields, cardiology is rapidly changing as physicians and researchers become more knowledgeable about the causes and treatments for various cardiovascular conditions. Stent and pacemaker technology continues to improve. Doctors are finding new ways to perform some procedures, such as valve replacements, in a less invasive way. Researchers continue to make advancements related to heart transplants and artificial organs. These changes in the industry help many cardiologists continue to find intellectual stimulation in their work.