Final answer:
The left lateral position is the recommended position for a client with a congenital heart defect in early labor, as it helps to optimize cardiac function and prevent complications associated with supine hypotensive syndrome. C) Left lateral position
Step-by-step explanation:
Optimal Position for a Client with Congenital Heart Defect in Labor
A client with a history of a congenital heart defect and admitted to the birthing unit in early labor should be encouraged to assume the left lateral position. This position helps to optimize cardiac function and uteroplacental blood flow, preventing supine hypotensive syndrome, a situation where the gravid uterus compresses the inferior vena cava and aorta when the mother is in a supine position. This compression can decrease venous return to the heart and reduce cardiac output, which may be particularly dangerous in clients with congenital heart defects.
The Trendelenburg position is not recommended as it may worsen edema and is not considered beneficial for labor. A sitting position may also be uncomfortable and does not provide the same circulatory benefits as the left lateral position. Therefore, the most appropriate answer to the question regarding the position that a nursing staff should encourage for a client with a history of congenital heart defect in early labor is C) Left lateral position.