Arterio-venous flow between monochorionic twins determined during intra-uterine transfusion. Nonlinear decay of adult red blood cells.
Recently, we derived equations relating the flow of adult red blood cells through a placental arterio-venous anastomosis with intra-uterine and post-natal measured adult hemoglobin concentrations. In this letter, we re-derived the equations, now including a more realistic nonlinear decay of adult red blood cells, and re-evaluated the measurement accuracy of the arterio-venous flow and the lifetime of the red blood cells.
van Gemert
Martin J C
MJ
Pasman
Suzanne A
SA
van den Wijngaard
Jeroen P H M
JP
Lopriore
Enrico
E
Vandenbussche
Frank P H A
FP
D000328:Adult; D001159:Arterio-Arterial Fistula / Q000097:blood* / Q000196:embryology; D001783:Blood Flow Velocity; D001805:Blood Transfusion, Intrauterine / Q000379:methods*; D002823:Chorion; D004912:Erythrocytes / Q000166:cytology / Q000378:metabolism*; D005260:Female; D005315:Fetal Diseases; D006454:Hemoglobins / Q000032:analysis / Q000378:metabolism; D006801:Humans; D017711:Nonlinear Dynamics; D010920:Placenta / Q000098:blood supply*; D011247:Pregnancy; D013997:Time Factors; D014427:Twins
D006454:Hemoglobins