Studies of the Inferior Vena Cava in Late Pregnancy

Abstract

Radiological studies of the inferior vena cava have been made in 12 patients in late pregnancy. These studies indicate that the inferior vena cava is normally occluded in the supine position in late pregnancy, and that venous return is via the azygos and vertebral veins. In the lateral position this obstruction is at least partially relieved. © 1964, British Medical Journal Publishing Group. All rights reserved.