Dr.Schuman decided to convert to an open instead of the laparoscopic approach for the colectomy because the patient was morbidly obese and he needed a larger incision.He asked the circulating nurse to bring the largest self-retaining retractor in the sterile storage room.Select the appropriate retractor.

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Retractors are used to hold back the wound edges,structures,or tissues to provide exposure of the operative site.A surgeon needs the best exposure possible that inflicts a minimal degree of trauma to the surrounding tissue.Retractors are self-retaining or manually held in place by a member of the surgical team.The two types of self-retaining retractors are:(1)retractors with frames to which various blades may be attached,and (2)retractors with two blades held apart with a ratchet.An example of the latter is a Weitlaner retractor.Other very large self-retaining retractors,such as the Omni or Bookwalter,are equipped with multiple blades and attachments of varying lengths and sizes.

DrSchuman Decided to Convert to an Open Instead of the Laparoscopic