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.
Atrial fibrillation is an abnormal, fast electrical rhythm in the upper chambers of the heart. During atrial fibrillation the upper chambers do not contract fully. In small areas in the upper chamber, in particular a pouch called the left atrial appendage, blood flow can become impaired.When blood becomes stagnant to any degree the mechanisms that form a clot are activated.uring atrial fibrillation the upper chambers do not contract fully. In small areas in the upper chamber, in particular a pouch called the left atrial appendage, blood flow can become impaired. When blood becomes stagnant to any degree the mechanisms that form a clot are activated.