Posted by roscopeeco on August 30, 2011, at 20:53:40
In reply to Re: Second time around on MAOI))Lepus, posted by Lepus on August 30, 2011, at 18:44:16
> Thank you, RP. Your words mean a lot to me, as does your offer to talk. Thank you so much!
> How did you get through blacking out every time you stood up?!?
I did what emmanuel did when she was experiencing the same thing. When you standup your blood volume drops to your lower extremities. Your heart compensates this by a rapid increase in heart rate to counteract its perceived drop in blood volume.
Your aorta and carotid arteries have baroreceptors that sense blood pressure. When they sense a drop in blood pressure it sends a signal to the heart to beat faster to accommodate this drop. That is what is considered "reflex tachycardia", or sudden acceleration of heart rate. It is a feedback mechanism in our body. To avoid this sudden drop in blood pressure and accompanying accelerated heart rate, you have to let your heart adjust at a slower pace. Sit up in the bed first. Start moving around while sitting. Stand up slowly, hold onto something. Give your heart time to accelerate gradually instead of suddenly. You are giving your heart the adequate time to catch up to lower blood pressure when you get up gradually. If you get up all of the sudden the heart cannot catch up quick enough and you black out.