I had an EKG, next is stress test then ECHO. Depending on those results I may need another heart catherization. Symptoms come and go. If I start feeling weak, dizzy, nauseous, chest pressure, I take my blood pressure. Sure enough it'll be down somewhere around 85/58 give or take. I can definitely tell when it happens. I've had it for a long time but it started out mild and rarely gave me symptoms but after all these years it's progressing.