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IMO, OP shooting Reeva at about 3:15:51 is supported by Col. van der Nest's testimony regarding blood spatter analysis and arterial spurts on the stairway walls and the sofa in the downstairs lounge.
<RSBM>
BIB Even if you back the time of the Standers and Baba arriving from 3:25 back to 3:22, that is still too much time for Reeva's heart to still be beating.
A woman typically has about 4.5 liters of blood, a larger man has about 5 liters. The heart pumps +/- 5 liters of blood though the body every minute when the body is at rest, it can pump up to 5 times that amount (25 liter per minute) when a person is physically active. The amount of time from when she was killed to when she was brought down the stairs was at least 7-9 minutes.
To believe that Reeva's heart was still alive and pumping blood as she was carried down the stairs, you would have to believe that her severed arteries "selectively" bled only on the staircase. Why would they not bleed on the duvet? Or on the pathway from the bedroom to the staircase? Or while OP was standing at the top of the staircase waiting (there would have been a blood pool there)?
The body can do only so much to stop the bleeding of two severed arteries. Typically when an artery is severed the victim or someone near him immediately applies enough pressure to stop or slow the hemorrhaging, but that did not happen. The blood evidence points to Reeva, and her heart, having died in the WC.
We are being asked to believe that Reeva's brain had died, her breathing had died, but her heart stayed alive and kept pumping blood throughout her body for 7, 8, 9, and up to 22-25 minutes. Here is an image of a woman that obviously bleed to death over a period of time. Please note the massive amount of blood loss. That is what bleeding to death looks like. And yet we are supposed to believe that Reeva bled to death without bleeding very much. !!!Warning, very graphic image of a murder victim and massive blood loss!!!
http://www.documentingreality.com/forum/attachments/f10/262006d1302117992-before-after-_sc08659.jpg
Please compare that graphic murder scene to the one that we are discussing, here:
http://juror13lw.files.wordpress.com/2014/04/10.jpg
Sorrel I just spoke to the Director of Crime Scene Investigation at my local police department in Texas. I encourage you and others to pick up the phone and do the same; these are very polite professionals that do not mind handling a question from a curious citizen. She said the following:
"It depends on how much time had passed since her heart stopped beating, but any force against the body could eject blood from the gunshot wounds. CSI is a "subjective" science, not an "exact" science. Nothing is definitive at the crime scene and mistakes in identifying patterns are common."
ETA: I corrected the one broken link.