Normal Heart Rate at Rest for Adults. For most adults, a resting heart rate should be between 60 bpm and 100 bpm. Having a high heart rate when you’re not being active can be a sign of a problem. For example, having a heart rate over 120 while resting could point to an abnormal heart rhythm. Resting Heart Rates by Age.

Sinus tachycardia is usually apparent on an ECG, but if the heart rate is above 140 bpm the P wave may be difficult to distinguish from the previous T wave and one may confuse it with a paroxysmal supraventricular tachycardia or atrial flutter with a 2:1 block.

Other potential causes of normal sinus tachycardia include: stimulants, such as nicotine or caffeine alcohol anxiety stress low blood pressure infection

Supraventricular tachycardias (SVT) is a kind of abnormally fast heart rhythm (heartbeat). It's a problem in the electrical system of the heart. The word supraventricular means above the ventricles. With SVT, the abnormal rhythm starts in the upper heart chambers (atria). This condition is also called paroxysmal supraventricular tachycardia.

Ventricular tachycardia. Ventricular tachycardia (VT) is a fast heart rate that starts in the lower chambers (ventricles) of your child’s heart. This condition is uncommon, but potentially very serious. In some cases, ventricular tachycardia can be life-threatening. It requires immediate medical attention. Ventricular tachycardia may result.

Bulk download StatPearls data from FTP. [Pathophysiologic mechanisms of atrial rhythm disorders. II. Atrial flutter]. Factors determining clockwise and counterclockwise conduction patterns in atrial reentrant tachycardias: a rabbit model of atrial flutter. Electrical-anatomic correlations between typical atrial flutter and intra-atrial re-entry.