What is important about positioning during OMM for a pregnant patient?

What is important about positioning during OMM for a pregnant patient?

• A. Supine positioning is always safe
• B. Prone positioning is preferred
• C. Avoid supine due to IVC compression; lateral on the left side is better
• D. Standing is best for circulation

Answer: (C)

During late pregnancy, the enlarged uterus can press on the major vessels when a patient lies on her back, especially the inferior vena cava. This compression reduces venous return to the heart, lowers maternal cardiac output, and can decrease uteroplacental perfusion, risking both maternal symptoms like dizziness and fetal distress. Placing the patient on the left side (left lateral decubitus) relieves this pressure by shifting the uterus off the IVC and reducing aortocaval compression, which restores venous return and improves blood flow to the placenta. In practice, you’d position the patient on the left side or use a left-tilt with pillows to maintain that position during OMM. Prone or standing positions are not ideal in later pregnancy because they can worsen compression and discomfort, making the left-side position the safest and most effective approach.

During late pregnancy, the enlarged uterus can press on the major vessels when a patient lies on her back, especially the inferior vena cava. This compression reduces venous return to the heart, lowers maternal cardiac output, and can decrease uteroplacental perfusion, risking both maternal symptoms like dizziness and fetal distress. Placing the patient on the left side (left lateral decubitus) relieves this pressure by shifting the uterus off the IVC and reducing aortocaval compression, which restores venous return and improves blood flow to the placenta. In practice, you’d position the patient on the left side or use a left-tilt with pillows to maintain that position during OMM. Prone or standing positions are not ideal in later pregnancy because they can worsen compression and discomfort, making the left-side position the safest and most effective approach.