Final answer:
The correct statement showing understanding of how to relieve pregnancy-associated low back pain and ankle edema is lying on the left side with feet elevated. Back strain and ankle edema are common in pregnancy due to the expanding uterus affecting posture and circulation. Pelvic tilt exercises and leg elevation can help alleviate these symptoms.
Step-by-step explanation:
The correct statement by the client that indicates an understanding of the teaching on how to relieve discomfort from frequent low back pain and ankle edema during the second trimester of pregnancy is: "When I get home I should lie on my left side, with my feet elevated on a pillow." This position helps reduce the pressure on the vena cava, promoting improved venous return and reducing edema. During pregnancy, especially in the later stages, women often suffer from back strain and ankle edema due to the increased weight and altered center of gravity, as well as the pressure exerted by the growing fetus on veins returning blood to the heart.
Back strain occurs as the uterus expands and alters the woman's center of gravity, causing a change in posture and increased pressure on the back muscles. In addition, hormonal changes during pregnancy can loosen the joints and ligaments that attach to the spinal vertebrae and pelvis, contributing to discomfort and potential strain. To ease back strain, a pregnant woman can practice pelvic tilt exercises and use supportive devices.
Regarding ankle edema, this occurs when venous circulation is compromised, leading to pooling of blood and fluid in the legs, which is common during pregnancy due to the pressure the enlarged uterus places on pelvic veins and the vena cava. This can be alleviated by elevating the legs to assist with blood flow back to the heart, hence the recommendation to lie on the side with feet elevated.