During dissection of the cystic duct and artery in an open cholecystectomy, which of the following instruments is necessary?

During dissection of the cystic duct and artery in an open cholecystectomy, the Mixter clamp is essential due to its design and functionality. This clamp, also known as a right-angle clamp, is particularly useful in surgical procedures where access to deep structures is required, as it allows for precise manipulation and clamping of tissues that might otherwise be difficult to reach.

In the context of dissecting the cystic duct and artery, the Mixter clamp enables the surgeon to atraumatically grasp and secure these structures, facilitating a clearer surgical field and helping to prevent injury to surrounding tissues. Its angled jaws provide the ability to maneuver around the anatomy of the gallbladder and surrounding structures effectively.

Other instruments listed have distinct roles in surgery but do not specifically cater to the needs presented during the dissection of the cystic duct and artery. Ochsner forceps are useful for grasping tissues but lack the specific angle needed for this particular area. Jennings retractors are primarily used for exposing incisions rather than for directly manipulating or securing ducts and arteries. The O'Sullivan-O'Connor retractor is also designed for exposure, providing optimal visibility but not the specific clamping and dissection capabilities offered by the Mixter clamp. Thus