Why is the left lateral recumbent position recommended for pregnant patients in certain emergencies?

• A. It reduces venous return to the heart
• B. It inhibits fetal movement
• C. It increases aortocaval compression
• D. It reduces aortocaval compression and improves uteroplacental blood flow

Answer: (D)

In late pregnancy, the enlarged uterus can press on the aorta and especially the inferior vena cava when the mother lies flat, reducing venous return to the heart and lowering uteroplacental blood flow. The left lateral recumbent position shifts the uterus away from these vessels, relieving aortocaval compression, which increases maternal venous return and cardiac output and improves blood flow to the uterus and placenta. This helps stabilize both mother and fetus during emergencies. If full left side isn’t possible, a slight left tilt can achieve the same relief.