Could just be randomā¦ rememberā¦ evolution doesnāt need a reason. As long as the mutation isnāt negatively impacting survival, it continues in the genome regardless. Possibly very early on this was a random effect of hormones on structure that while interesting, has no āpurposeā evolutionarily speaking.
But there is probably a positive influence bore out by this change which is why other configurations arenāt observedā¦ but my bet is they still exist, just rare.
Men also retain fat around organs while women donāt generally, just under the skin between muscle and dermis. Obesity in men has a much higher impact to organ health than women because of this.
That was my biggest hurdle going bevel up, bevel down was closer to the 17g venipunctures I did at the plasma center, required a good push but nothing crazy. A lot of the donors had major scar tissue so you had to get used to getting past the scar tissue and stopping quickly before going through the bottom of the vein. This procedure is honestly much more forgiving than venipunctures are.
I asked a phlebotomist at my donor center if she could do bevel down because I noticed the scars are becoming more noticeable. She said no
After the xG3 injector though, the plasma needles donāt hurt me anymore! lol
We are heavily regulated by extensive SOPs and regulatory bodies like the FDA and the EMA that dictate our procedures, and any deviations can cost you your job if the wrong person sees you. Itās quite stressful honestlyā¦that and the fact theyāre ran like a McDonaldās trying to push as many donors through as possible, my center averaged 3000 donations a week in a not very populated area compared to other center that push 4-5000. Bevel down might also cause hemolysis, ruining the entire bottle of plasma, and likely wouldnāt run very well since the blood is being pumped out of you. The bevel would have an easier time suctioning to the bottom of your vein, if you have too shallow of an angle when you perform your venipuncture, then you might cause the same problem but with the top of the vein.
That makes a lot of sense!
I think hemolysis can a deferral for the donor as well. Remember seeing that in the prescreening questions every time before they thankfully shrank the question list by more than half!
Thankfully my current donation center is ran incredibly well! Iāve got to two before that were nasty and getting people in and out as fast as possible. My current place though is always nice, clean, fully staffed besides one time that Iāve been there, and the staff are all amazing. And nice equipment too. They pay their employees pretty well which is making me think about applying for a job there when I get my EMT cert if I canāt get on an ambulance right out of class.
Ha, youāre all good, Iām probably worse than anybody at derailing.
Your chat was still on topic, but just thought it better to leave the instal thread with more pictures than chatter