… you’re not alone. But in hospitals and cardiology practices across the U.S., these professionals perform essential work—monitoring, programming, and … Heart Care The U.S. healthcare system is facing a shortage of specialists trained to support pacemakers, implantable defibrillators, and other cardiac devices. While … don’t just “program machines”—they interact with anxious patients, explain how devices work, detect early signs of malfunction, and coordinate with …