Optional medical device diagnostics-depending on the results of history, physical examination, laboratory diagnostics, and obligatory medical device diagnostics-for differential diagnostic clarification
- Abdominal ultrasonography (ultrasound examination of the abdominal organs) – for suspected intra-abdominal changes, for example, due to renal artery stenosis (renal artery stenosis) or hormone-producing tumors.
- Electrocardiogram (ECG; recording of the electrical activity of the heart muscle) – to exclude cardiac arrhythmias that may occur as a result of electrolyte disturbances
