To diagnose supraventricular tachycardia, your doctor will review your symptoms and your medical history and conduct a physical examination. System Verification Test or SVT plan serve many important functions for the software testing engineer and becomes a road map for him/her to follow and a. Will ask if anything triggers the fast heart rate, how long it lasts, if it starts and stops suddenly, and if the beats are regular or irregular. Difference between regression test vs FVT/SVT. does anybody tell me what is diff from SVT and FVT.