A cardiologist will decide if a patient's fainting and/or dizziness has a life-threatening cause.
The key part of the exam is the detail the patient gives of their symptoms (history).
Both cardiac and neurologic causes of fainting can often be ruled out with a good history and physical exam.
An electrocardiogram (ECG) will often be done to screen for abnormal heart rhythms.
Sometimes, other tests will be done such as an echocardiogram, graded exercise test (GXT) and / or electroencephalogram (EEG).
Also, some patients will have a tilt table study. During this test, the patient is strapped to a table and tilted to near standing. This is done to provoke the common, non-life threatening, form of syncope.