Heart Rhythm (Arrhythmias) & Devices
Inappropriate Sinus Tachycardia
In IST the rhythm is normal, but the rate is too fast at rest — with no fever, anemia, or thyroid cause. It rarely harms the heart and usually improves with care.
This is a free, plain-language patient education guide written by Rias Ali, MD, FACC, a board-certified interventional cardiologist. Every guide is grounded in current peer-reviewed evidence and major society guidelines, organized in a way patients can actually use during a visit.
Download the Inappropriate Sinus Tachycardia guide
What's inside this guide
- Plain-language explanation of inappropriate sinus tachycardia
- Why it matters and what the major risks are
- Treatment options with risks, benefits, and alternatives
- Common misconceptions clarified
- Lifestyle and self-care advice
- Specific warning signs — when to call us, when to call 911
- Sources used to build the guide (peer-reviewed and society guidelines)