passed out during stress test.

[veronicahewitt]

I am a 33 year old female that has many health problems one being SVT. I had a catheter ablation in 3 areas in 2014 had few problems still so they installed a loop recorder and continued my cardizam. well last Thursday i had a stress test everything was going good my target rate was 159 once i was in third stage my heart rate finaly reached 156 then my heart heart droped in seconds to 68 and i passed out was very thirsty, sick pain in stomach, face numb, and head pounding. Why did this happen? the last 3 to 4 months i have been very sleepy and blood pressure has been low. lots of coughing