Further testing may also be needed, including genetic testing, cardiac MRI, exercise stress testing, monitoring for abnormal heart rhythms and cardiac catheterization.
[ucsfhealth.org]
Invasive cardiac catheterization or electrophysiological studies are now rarely necessary.
[circ.ahajournals.org]
The ECG usually shows a wide variety of abnormalities but is of limited value in HCM, with the exception of family screening.
[circ.ahajournals.org]