How long does cardiac catheterization last?

Depends: The length of time to perform a cardiac catheterization depends on many variables. Often, for a straightforward case, the waiting and preparation take longer than the diagnostic procedure - which can take as little as 15 minutes. If access is difficult or the anatomy tortuous, it can take much longer.

Multifactorial : Diagnostic vs interventional. Time depending on reasons for the cardiac cath. Diagnostic possibly up to 30 minutes but if angioplasty or stenting necessary up to 1 to 2 hrs. Time also vary between centers, individual cardiologist and patient morbidities and body habitus.