Obligatory medical device diagnostics.
- Electrocardiogram (ECG; recording of the electrical activity of the heart muscle) – indicates the conduction of excitation of the heart [typical AVNRT: regular narrow complex tachycardia that can reach frequencies > 200/min; in sinus rhythm, the ECG usually shows an unremarkable picture].
Optional medical device diagnostics – depending on the results of the history, physical examination, laboratory diagnostics and obligatory medical device diagnostics – for differential diagnostic clarification.
- Echocardiography (echo; cardiac ultrasound) – ultrasound examination of the heart [regular narrow complex tachycardia that can reach frequencies > 200/min].
- Long-term ECG – ECG applied over 24 hours for more accurate assessment of cardiac function within the day.