vein transit == V
artery transit == A
Success means that both parts of the system successfully circulate, either completely
- every hemoglobule gets circulated all the way from heart, lung complex (HL), around to HL again
or on time
- every hemoglobule circulates fast enough for all chemical or biological processes to succeed, before the next time it gets to HL
Call promptness P, completeness, C. Each of these can be yes/no. But to be honest, C is always true or we would be losing blood somewhere.
So we have V, A, and P.
P defines transit's success: if P is ever no, the blood transition fails. P == success, for a vein, or an artery transit
P must be yes, or the transition was not successful. One of A or V is always true. If we leave out cases where no flow occurs, we have:
r) 010 Artery slow
s) 011 Artery works ok.
u) 100 Vein slow
v) 101 Vein works ok.
x) 110 Both slow
y) 111 Both work ok.
Cases of vein/artery asynchrony seem to be r or u. X is not v/a asynchrony. Case of jugular asynchrony can be u or x (we are not talking about arteries here).
So r and u are v/a asynchrony problems. Vein slower than artery, and artery slower than vein.
Blood cells can go through from HL back to HL, but slow down in the vein and speed up again in the artery. They can slow down in the artery and speed up again in the vein, but r is less likely. Two kinds of problems then occur:
1) hypoxia because the arterial blood is also too slow, and the venous slowdown has affected it (case x).
2) iron deposition because venous blood hangs around too long (either case x or u.).
Case 1 is part of x (both too slow), above. Case 2 is part of x or u. R and u are v/a asynchrony. Jugular asynchrony can happen in either x (hypoxia more likely) or u.
Does case1 happen more often in supine position?
Any of this make sense?
"Try - Just A Little Bit Harder" - Janis Joplin
CCSVI procedure Albany Aug 2010
'MS' is over - if you want it
Patients sans/without patience