Studies of the Inferior Vena Cava in Late Pregnancy

“In the supine position in late pregnancy, it is normal for the inferior vena cava to be virtually completely occluded.”
“Posture has profound effects on the circulation in late pregnancy.”

M.G. Kerr, M.B. B. Sc., F.R.C.S.ED., M.R.C.O.G.; D.B. Scott, M.D., F.F.A.; Eric Samuel, M.D., F.R.C.P.ED., F.R.C.S., F.R.C.S.ED., F.F.R.

Kerr et al: Studies of the Inferior Vena Cava, BMJ 1964