Future studies will also provide appropriate surveillance for at-risk individuals with higher resting sinus HR ... We hope that definitions of tachycardia will change.

For informational purposes only. Consult a medical professional for advice. Source: Focus Medica A heart rhythm disorder with heartbeats faster than usual, greater than 100 beats per minute. An ...

Background Inappropriate sinus tachycardia (IST) is characterized by persistent and disproportional elevation of heart rate (HR). Ivabradine has been successfully used in some patients.