Final answer:
The correct position for a left nephrectomy procedure is the Left lateral decubitus position, allowing optimal access to the patient's left kidney.
Step-by-step explanation:
Ms. Tovar is scheduled for a Left Nephrectomy to remove a tumor in the upper pole of her left kidney. The position that will be used for this procedure is Option 4: Left lateral decubitus position. In this position, the patient lies on their left side, which is especially beneficial for accessing the left kidney and provides an optimal surgical field. The other positions listed such as Trendelenburg, Lithotomy, and Fowler's are not typically used for kidney surgeries. The left lateral decubitus position is effective in part because of the left kidney's location at the T12 to L3 vertebrae and being partially protected by the eleventh and twelfth ribs, as well as being encompassed by a renal fat pad and tough renal fascia. These structures make it important to choose a position that offers the best access and least interference from adjacent organs and bones.