Hi, im a 20 year old female. I just went and had a my second tilt table test today. the results of this one where scary. i didnt really walk out of the hospital assured that id be fine. my last TTT was feb of last year. i passed out after 8 min with a reading of 76/46. i was then diagnosed with NCS. all well and good. ive been on mididorine for 6 months and my cardio said he wants to meet again but wanted another TTT before to see how the new med was working. this time i made it all the way to the nitro admin. within the first few min after that i passed out with a reading of 78/46. i was slow to come around this time and they recorded what they called a second degree heart block. when i asked questions about it all the doctor said was not to worry, that i was too young for a pacemaker. but he didnt really answer any of my questions on it. im looking for some info on what exactly this is. how it will effect me at 20 and why on earth would i need a pacemaker. thank you.