Re: what happened to the passengers of flight 93? Â« Reply #17 on: May 06, 2011, 05:33:51 pm Â». There are a lot of different theories on here about what happened. I must say that flight 93 might be the the part of 9/11 that I'm the most undecided on.here are a lot of different theories on here about what happened. I must say that flight 93 might be the the part of 9/11 that I'm the most undecided on.
Atrial fibrillation and atrial flutter are very fast electrical discharge patterns that make the atria contract very rapidly, with some of the electrical impulses reaching the ventricles and causing them to contract irregularly, faster, and less efficiently than normal.
asynchronous pacing cardiac pacing in which impulse generation by the pacemaker occurs at a fixed rate, independent of underlying cardiac activity. burst pacing overdrive p. cardiac pacing regulation of the rate of contraction of the heart muscle by an artificial cardiac pacemaker. coupled pacing a variation of paired pacing in which the patient's natural depolarization serves as the first of the two stimuli, with the second induced by an artificial cardiac pacemaker.