From the Guidelines
The best lying position for a woman in passive labor to sleep is the left side-lying position, as it improves blood flow to the baby and uterus by preventing the weight of the uterus from compressing the inferior vena cava. This position is recommended to minimize stress on the aorta and improve circulation 1. Additionally, the left lateral position is also suggested for pregnant women who are fully conscious with no cardiovascular compromise, as it is beneficial for their health and the health of the baby 1.
To get comfortable in a side-lying position, place a pillow between your knees and another under your abdomen for support. You can also try a semi-reclined position with pillows propping up your upper body if side-lying becomes uncomfortable. Avoid sleeping flat on your back after the first trimester as this can decrease blood flow to the baby and potentially cause dizziness, shortness of breath, or low blood pressure.
Some key points to consider when choosing a sleeping position during passive labor include:
- Preventing the weight of the uterus from compressing the inferior vena cava
- Minimizing stress on the aorta
- Improving blood flow to the baby and uterus
- Avoiding sleeping flat on your back after the first trimester
- Using pillows for support and comfort in a side-lying or semi-reclined position.
It is essential to listen to your body and adjust your position as needed, as comfort during early labor will help conserve energy for active labor later. The most recent and highest quality study suggests that the left side-lying position is the best option for sleeping during passive labor, as it prioritizes the health and well-being of both the mother and the baby 1.
From the Research
Best Lying Positions in Passive Labor for Sleep
To determine the best lying positions for a woman in passive labor to sleep, several factors need to be considered, including comfort, safety, and the potential impact on labor progression.
- Left-Lateral Position: This position is often recommended as it can help alleviate pressure on the inferior vena cava, improving blood flow and reducing the risk of supine hypotension syndrome 2, 3. The left-lateral position may also help reduce uterine contractions and improve maternal hemodynamics 3.
- Avoiding the Supine Position: Lying in a supine position can cause the uterus to compress the inferior vena cava, leading to decreased blood flow and potentially causing symptoms such as dizziness and nausea 4, 2.
- Upright Positions: While upright positions, such as sitting or standing, can be beneficial during labor, they may not be the most comfortable for sleeping 5, 6. However, these positions can help improve the quality of uterine contractions and may lead to shorter labors 6.
- Right-Lateral Position: The right-lateral position may also be beneficial, although the evidence is less clear compared to the left-lateral position 2. In some cases, the right-lateral position may achieve optimal inferior vena cava volume, but this can vary between individuals.
Considerations for Passive Labor
During passive labor, the goal is often to rest and conserve energy for the active phase of labor. Choosing a comfortable and safe lying position can help achieve this goal. It's essential to consider individual preferences and needs, as well as any specific medical recommendations from healthcare providers.
- Comfort and Safety: The chosen position should prioritize both comfort and safety, taking into account the potential risks and benefits associated with each position 5, 4, 2, 3.
- Labor Progression: While the primary focus during passive labor is rest, the chosen position may also impact labor progression. Upright positions and left-lateral positions may have benefits in terms of improving uterine contractions and reducing labor duration 5, 6.