Which position is often recommended to alleviate umbilical cord compression during labor?

The left lateral position is often recommended to alleviate umbilical cord compression during labor because it helps improve uterine and placental blood flow, thus decreasing the risk of fetal distress. This position promotes optimal blood circulation to the fetus by helping to minimize pressure on the inferior vena cava, which can occur when the uterus compresses significant blood vessels. The left lateral position is particularly effective because it allows for better placental perfusion and reduction of compression on the umbilical cord, which can improve fetal heart rate patterns and overall fetal well-being during labor.

Other positions, such as the supine position, can exacerbate compression of the vena cava, potentially leading to reduced uteroplacental circulation and increased risk for fetal heart rate decelerations due to cord compression. The prone position is rarely used during labor because it can be uncomfortable and does not provide the same benefits for circulatory support as the lateral positions. The right lateral position, while it may alleviate some issues, does not provide the same level of optimal blood flow and compression relief as the left lateral position, making it less favorable for resolving umbilical cord compression.