Optional medical device diagnostics – depending on the results of the history, physical examination, laboratory diagnostics, and obligatory medical device diagnostics – for differential diagnostic clarification.
- Abdominal ultrasonography (ultrasound examination of the abdominal organs) – for basic diagnostics.
- X-ray of the thorax (X-ray thorax/chest), in two planes – to detect infiltrations.
- Electrocardiogram (ECG; recording of the electrical activity of the heart muscle).
- Echocardiography (echo; heart ultrasound) – for suspected structural heart disease.
- Coronary angiography (radiological procedure that uses contrast agents to visualize the lumen (interior) of the coronary arteries (arteries that surround the heart in a wreath shape and supply the heart muscle with blood)).