In which position is the patient lying on their left side with the right leg bent?

The position described, where a patient is lying on their left side with the right leg bent, is known as Sims' position. This posture is often used for various medical examinations and procedures, such as rectal examinations or administering enemas, as it provides optimal access and comfort for healthcare providers. By bending the right leg and keeping the left leg straight, this position allows for better visualization and access to the anal and rectal area while also promoting drainage of fluids.

Other options represent different body orientations that do not fit the description provided. For instance, lying on the back refers to the supine position, while prone positions involve lying on the stomach. The sitting position, on the other hand, is upright and does not match the lying orientation specified in the question. Therefore, recognizing Sims' position is crucial for understanding patient positioning in healthcare settings.