During late pregnancy, lying supine can compress the inferior vena cava. Which position relieves this pressure?

• A. Left lateral recumbent
• B. Supine with legs raised
• C. Prone
• D. Standing

Answer: (A)

When a pregnant person lies on the back in late pregnancy, the enlarged uterus can press on the inferior vena cava, reducing venous return to the heart and compromising both maternal and fetal perfusion. Lying on the left side shifts the uterus off the IVC, relieving that compression and restoring venous return, which improves circulation to the heart and placenta. This left-side position is the standard way to prevent or relieve supine hypotension in pregnancy. The other positions don’t relieve the IVC pressure: lying on the back with legs raised still allows the uterus to press on the IVC; lying face down compresses the uterus against the abdomen; standing worsens venous return.