Did another TTT today in Dysautonomia Discussion Posted May 5 · Report reply 5 minutes ago, Pistol said: @JimL - my first TTT went the same as yours - passed out cold after nitro. At that time they diagnosed me with NCS - they didn't find out about the POTS until after another TTT and neurotransmitter labs. @Derek1987 - if you pass out during the TTT they just return the table to the horizontal position and people regain consciousness rather quickly. Question. When the passing out occurs on the TTT, is it because your blood pressure dropped too low? When I passed out at Olive garden I was sitting up and I eventually regained my hearing and sight but I couldn't move or talk. When I was in the ambulance obviously laying down, he told me my blood pressure was coming back up. I was still super weak and answering the paramedics questions was like trying to bench press 300 pounds. I eventually gained all my strength back at the hospital. I just felt like garbage for a few days after.