Diagnosis
The normal heart rate in adults lies somewhere between 60 and 100 beats per minute (bpm). It depends on age. Thus, newborns usually have a heart rate of 100 to 150 bpm, which tends to slow down as they grow older. The resting heart rate in older children and adults is usually between 65 and 85 bpm.
The simplest way of measuring heart rate is pulse palpation. It allows to evaluate the heart´s rate and (to some extent) its regularity. The next most important diagnostic tool is ECG. With a standard 12-lead ECG, most tachycardias and arrhythmias can be diagnosed with high accuracy. However, an ECG cannot identify the causes. If tachycardia appears in episodes and is not present during an ECG examination, the method of choice is a 24h ECG. For this, the patients receive electrodes on several points of the chest that are connected to a small, portable ECG device. This device continuously records electric heart activity and can afterwards be interpreted by the physician.
Treatment Guidelines
In the sign-in area, specialists can find the ESC guidelines for the management of supraventricular tachycardias at:
https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Supraventricular-Tachycardia
The guidelines for the management of ventricular tachycardia can be found here:
https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Ventricular-Arrhythmias-and-the-Prevention-of-Sudden-Cardiac-Death